Application Development

• Quick Start

  • Getting Started
    • Before You Start
    • Building the First ArkTS Application in Stage Model
  • Development Fundamentals
    • Application Package Fundamentals
      • Application Package Overview
      • Application Package Structure
        • Application Package Structure in Stage Model
        • Application Package Structure in FA Model
      • Application Package Development and Usage
        • HAP
        • HAR
        • HSP
      • Application Installation, Uninstall, and Update
    • Application Configuration Files in Stage Model
      • Overview of Application Configuration Files in Stage Model
      • app.json5 Configuration File
      • module.json5 Configuration File
    • Application Configuration Files in FA Model
      • Overview of Application Configuration Files in FA Model
      • Internal Structure of the app Tag
      • Internal Structure of the deviceConfig Tag
      • Internal Structure of the module Tag
    • Typical Scenarios Development
      • Integrated HSP
      • Converting HAR to HSP
      • Converting HSP to HAR
      • Creating a Static Shortcut of the Application
      • Creating an Application Clone
      • Creating an Application Multi-Instance
      • Configuring Layered Icons
  • Resource Categories and Access
  • Learning ArkTS
    • Getting Started with ArkTS
    • Introduction to ArkTS
    • ArkTS Coding Style Guide
    • TypeScript to ArkTS Migration Guide
      • ArkTS Migration Background
      • TypeScript to ArkTS Cookbook
      • Adaptation Cases
    • ArkTS Performant Programming Practices
    • Basic Syntax of UI Paradigms
      • Basic Syntax Overview
      • Declarative UI Description
      • Custom Components
        • Creating a Custom Component
        • Page and Custom Component Lifecycle
        • Custom Component Layout
        • Constraints on Access Modifiers of Custom Component Member Variables
      • @Builder Decorator: Custom Builder Function
      • @LocalBuilder Decorator: Maintaining the Parent-Child Relationship Between Component and State Management
      • @BuilderParam Decorator: @Builder Function Reference
      • wrapBuilder: Encapsulating Global @Builder
      • @Styles Decorator: Definition of Reusable Styles
      • @Extend Decorator: Extension of Built-in Components
      • stateStyles: Polymorphic Style
      • @AnimatableExtend Decorator: Definition of Animatable Attributes
      • @Require Decorator: Validating Constructor Input Parameters
      • @Reusable Decorator: Reusing Components
    • State Management
      • State Management Overview
      • State Management (V1)
        • Component State Management
          • @State Decorator: State Owned by Component
          • @Prop Decorator: One-Way Synchronization from the Parent Component to Child Components
          • @Link Decorator: Two-Way Synchronization Between Parent and Child Components
          • @Provide and @Consume Decorators: Two-Way Synchronization with Descendant Components
          • @Observed and @ObjectLink Decorators: Observing Attribute Changes in Nested Class Objects
        • Application State Management
          • Application State Management Overview
          • LocalStorage: UI State Storage
          • AppStorage: Application-wide UI State Storage
          • PersistentStorage: Persisting Application State
          • Environment: Device Environment Query
        • Other State Management Features
          • Overview of Other State Management Features
          • @Watch Decorator: Getting Notified of State Variable Changes
          • $$ Syntax: Creating a Two-Way Synchronization with Built-in Components
          • @Track Decorator: Class Object Property-level Update
          • Freezing a Custom Component
        • MVVM
        • Best Practices for State Management
        • Proper Use of State Management
      • State Management (V2)
        • V2 Exclusive Decorators
          • @ObservedV2 and @Trace Decorators: Observing Class Property Changes
          • @ComponentV2 Decorator: Custom Component
          • @Local Decorator: Representing the Internal State of Components
          • @Param Decorator: Inputting External Parameters to Components
          • @Once: Implementing Initialization Once
          • @Event Decorator: Component Output
          • @Provider and @Consumer Decorators: Synchronizing Across Component Levels in a Two-Way Manner
          • @Monitor Decorator: Listening for Value Changes of the State Variables
          • \@Computed Decorator: Computed Property
          • @Type Decorator: Marking the Types of the Class Property
        • Other State Management Features
          • AppStorageV2: Storing Application-wide UI State
          • PersistenceV2: Persisting Application State
          • !! Syntax: Two-Way Binding
          • Freezing a Custom Component
          • Repeat: Reusing Child Components
          • getTarget API: Obtaining Original Objects
          • makeObserved API: Changing Unobservable Data to Observable Data
        • MVVM (V2)
      • Mixed Use and Migration Guide for V1 and V2
        • Mixing Use of Custom Components
        • Migrating Applications from V1 to V2
    • Rendering Control
      • Rendering Control Overview
      • if/else: Conditional Rendering
      • ForEach: Rendering Repeated Content
      • LazyForEach: Lazy Data Loading
      • ContentSlot: Developing in a Hybrid Mode

• Development

  • Application Framework
    • Ability Kit
      • Introduction to Ability Kit
      • Application Models
      • Stage Model Development
        • Stage Model Development Overview
        • Stage Model Application Components
          • Application- or Component-Level Configuration
          • UIAbility Component
            • UIAbility Overview
            • UIAbility Lifecycle
            • UIAbility Launch Type
            • UIAbility Usage
            • Data Synchronization Between UIAbility and UI Page
            • Starting UIAbility in the Same Application
            • UIAbility Backup and Restore
          • ExtensionAbility Component
            • ServiceExtensionAbility (for System Applications Only)
            • UIServiceExtensionAbility (for System Applications Only)
            • UIExtensionAbility (for System Applications Only)
            • AutoFillExtensionAbility (for System Applications Only)
            • UIServiceExtension
            • EmbeddedUIExtensionAbility
          • AbilityStage Component Container
          • Context
          • Want
            • Want Overview
            • Matching Rules of Explicit Want and Implicit Want
            • Using Explicit Want to Start an Application Component
            • Common action and entities Values (Not Recommended)
          • Component Startup Rules (Stage Model)
          • AppStartup
          • Inter-Device Application Component Interaction (Hopping)
            • Hopping Overview
            • Cross-Device Migration
            • Multi-device Collaboration
          • Subscribing to System Environment Variable Changes
        • Inter-Application Redirection
          • Overview of Application Redirection
          • Starting a Specified Application
            • Overview of Starting a Specified Application
            • (Optional) Using canOpenLink to Check Application Accessibility
            • Using Deep Linking for Application Redirection
            • Using App Linking for Application Redirection
            • Switching from Explicit Want Redirection to Linking Redirection
            • Application Link Description
          • Starting an Application of the Specified Type
            • Overview of Starting an Application of the Specified Type
            • Using startAbilityByType to Start a Navigation Application
            • Using startAbilityByType to Start an Email Application
            • Using mailto to Start an Email Application
            • Using startAbilityByType to Start a Financial Application
            • Using startAbilityByType to Start a Flight Application
            • Using startAbilityByType to Start an Express Delivery Application
            • Using startAbilityByType to Start an Image Editing Application
            • Using startAbility to Start a File Application
          • Starting a System Application
        • Process Model (Stage Model)
        • Thread Model (Stage Model)
        • Mission Management (for System Applications Only)
          • Mission Management Scenarios
          • Mission Management and Launch Type
          • Page Stack and Mission List
          • Setting the Icon and Name of a Mission Snapshot
        • Application Configuration File (Stage Model)
      • FA Model Development
        • FA Model Development Overview
        • FA Model Application Components
          • Application- or Component-Level Configuration
          • PageAbility Component Development
            • PageAbility Overview
            • PageAbility Configuration
            • PageAbility Lifecycle
            • PageAbility Launch Type
            • Creating a PageAbility
            • Starting a Local PageAbility
            • Stopping a PageAbility
            • Starting a Remote PageAbility (for System Applications Only)
            • Starting a Specified Page
            • Window Properties
            • Requesting Permissions
            • Redirection Rules
          • ServiceAbility Component Development
            • ServiceAbility Overview
            • ServiceAbility Configuration
            • ServiceAbility Lifecycle
            • Creating a ServiceAbility
            • Starting a ServiceAbility
            • Connecting to a ServiceAbility
          • DataAbility Component Development
            • DataAbility Overview
            • DataAbility Configuration
            • DataAbility Lifecycle
            • Creating a DataAbility
            • Starting a DataAbility
            • Accessing a DataAbility
            • DataAbility Permission Control
          • Context
          • Want
          • Component Startup Rules (FA Model)
        • Process Model (FA Model)
        • Thread Model (FA Model)
        • Mission Management (for System Applications Only)
        • Application Configuration File (FA Model)
      • Development of Component Interaction Between the FA Model and Stage Model
        • Component Interaction Between the FA Model and Stage Model
        • Starting a UIAbility from the FA Model
        • Connecting to a ServiceExtensionAbility from the FA Model
        • Accessing a DataShareExtensionAbility from the FA Model
        • Starting a PageAbility from the Stage Model
        • Connecting to a ServiceAbility from the Stage Model
      • Switching from the FA Model to the Stage Model
        • Model Switching Overview
        • Configuration File Switching
          • Differences in Configuration Files
          • Switching of app and deviceConfig
          • Switching of module
        • Component Switching
          • PageAbility Switching
          • ServiceAbility Switching
          • DataAbility Switching
        • Widget Switching
        • API Switching
          • API Switching Overview
          • Context Switching
          • featureAbility Switching
          • particleAbility Switching
          • LifecycleForm Switching
          • LifecycleApp Switching
          • LifecycleService Switching
          • LifecycleData Switching
          • DataAbilityHelper Switching
          • request Switching
          • resourceManager Switching
          • window Switching
          • Storage Switching
      • Native Child Process Development (C/C++)
    • ArkData
      • Introduction to ArkData
      • Unified Data Definition
        • Unified Data Definition Overview
        • UTDs
        • Unified Data Structs
        • Prebuilt UTDs
      • Application Data Persistence
        • Application Data Persistence Overview
        • Persisting Preferences Data
        • Persisting KV Store Data
        • Persisting RDB Store Data
      • Distributed Application Data Sync
        • Distributed Application Data Sync Overview
        • Cross-Device Sync of KV Stores
        • Cross-Device Sync of RDB Stores
        • Cross-Device Sync of Distributed Data Objects
      • Data Reliability and Security
        • Data Reliability and Security Overview
        • Database Backup and Restore
        • Database Encryption
        • Access Control by Device and Data Level
        • Using an EL5 Database
      • Cross-Application Data Sharing
        • Data Sharing Overview
        • One-to-Many Data Sharing (for System Applications Only)
          • Sharing Data Using DataShareExtensionAbility
          • Silent Access via the DatamgrService
        • Many-to-Many Data Sharing
          • Sharing Data via Unified Data Channels
      • RelationalStore Development (C/C++)
      • UDMF Development (C/C++)
      • Persisting User Preferences (C/C++)
    • ArkTS
      • Introduction to ArkTS
      • ArkTS Common Library
        • Overview of the ArkTS Common Library
        • XML Generation, Parsing, and Conversion
          • XML Overview
          • XML Generation
          • XML Parsing
          • XML Conversion
        • Buffer
        • ArkTS Container Library
          • Overview of the ArkTS Container Library
          • Linear Containers
          • Nonlinear Containers
      • ArkTS Concurrency
        • Overview of Concurrency
        • Asynchronous Concurrency (Promise and Async/Await)
        • Multithreaded Concurrency
          • Overview of Multithreaded Concurrency
          • TaskPool
          • Worker
          • Comparison Between TaskPool and Worker
        • Inter-Thread Communication
          • Overview of ArkTS Inter-Thread Communication
          • Inter-Thread Communication Objects
            • Regular Object
            • ArrayBuffer Object
            • SharedArrayBuffer Object
            • Transferable Object (NativeBinding Object)
            • Sendable Object
              • Overview of Sendable Objects
              • Usage Rules and Constraints for Sendable
              • Asynchronous Lock
              • ASON Parsing and Generation
              • Shared Container
              • Shared Module
              • Freezing Sendable Objects
              • Use Scenarios of Sendable
          • Communication Between Threads
            • Using TaskPool for Independent Time-Consuming Tasks
            • Using TaskPool for Multiple Time-Consuming Tasks
            • Communication Between the TaskPool Task and Host Thread
            • Instant Communication Between the Worker Thread and Host Thread
            • Synchronous Calls to Host Thread Interfaces from Worker
        • Multithreaded Development
          • Overview of Multithreaded Development
          • Concurrency in Time-Consuming Tasks
            • Overview of Concurrency in Time-Consuming Tasks
            • CPU Intensive Task Development (TaskPool and Worker)
            • I/O Intensive Task Development (TaskPool)
            • Synchronous Task Development (TaskPool and Worker)
          • Concurrency in Continuous Tasks
            • Overview of Concurrency in Continuous Tasks
            • Continuous Task Development (TaskPool)
          • Concurrency in Resident Tasks
            • Overview of Concurrency in Resident Tasks
            • Resident Task Development (Worker)
          • Multithreaded Development Practice Cases
            • Batch Database Operations
            • Concurrent Loading of Service Modules
            • Global Configuration
            • ArkUI Data Updates
            • C++ Inter-Thread Data Sharing
            • ArkUI Waterfall Rendering
      • ArkTS Cross-Language Interaction
      • ArkTS Runtime
        • Overview of ArkTS Runtime
        • GC
        • ArkTS Modularization
          • Overview of Modular Operation
          • Dynamic Import
          • Lazy Import
          • Dynamically Loading Native Modules in Synchronous Mode
          • Statically Loading Native Modules.
          • Loading Modules Using Node-API
          • Side Effects and Optimization of Module Loading
      • ArkTS Compilation Toolchain
        • Overview of the ArkTS Compilation Toolchain
        • Ark Bytecode
          • Overview of Ark Bytecode
          • Ark Bytecode File Format
          • Ark Bytecode Fundamentals
          • Naming Conventions for Ark Bytecode Functions
          • Customizing Ark Bytecode During Compilation
        • Disassembler
        • ArkGuard for Code Obfuscation
        • Configuring arkOptions in build-profile.json5
    • ArkUI
      • Introduction to ArkUI
      • UI Development (ArkTS-based Declarative Development Paradigm)
        • UI Development (ArkTS-based Declarative Development Paradigm) Overview
        • Layout Development
          • Layout Overview
          • Building a Layout
            • Linear Layout (Row/Column)
            • Stack Layout (Stack)
            • Flex Layout (Flex)
            • Relative Layout (RelativeContainer)
            • Responsive Grid Layout (GridRow/GridCol)
            • Media Query (@ohos.mediaquery)
            • Creating a List (List)
            • Creating a Grid (Grid/GridItem)
            • Creating a Swiper (Swiper)
            • Tabs
        • Adding a Component
          • Button
          • Radio Button (Radio)
          • Toggle
          • Progress Indicator (Progress)
          • Image Display (Image)
          • Video Playback (Video)
          • Native XComponent
        • Setting Component Navigation and Page Routing
          • Component Navigation and Page Routing Overview
          • Component Navigation (Recommended)
          • Navigation Transition
          • Page Routing (@ohos.router) (Not Recommended)
          • Page Routing
        • Using Text
          • Introduction to Text
          • Text Display (Text/Span)
          • Text Input (TextInput/TextArea)
          • Rich Text (RichEditor)
          • Symbol Glyph (SymbolGlyph/SymbolSpan)
          • Styled String (StyledString/MutableStyledString)
        • Using Dialog Box
          • Popup Window Overview
          • Using Dialog Boxes (Dialog)
            • Dialog Box Overview
            • Global Custom Dialog Box Independent of UI Components (openCustomDialog) (Recommended)
            • Basic Custom Dialog Box (CustomDialog) (Not Recommended)
            • Fixed Style Dialog Box
          • Menu Control (Menu)
          • Popup
          • Binding a Modal Page
            • Modal Page Overview
            • Binding a Semi-Modal Page (bindSheet)
            • Binding a Full-Modal Page (bindContentCover)
          • Using Toasts (Toast)
          • Managing Overlays (OverlayManager)
        • Using Graphics
          • Drawing Geometric Shapes (Shape)
          • Drawing Custom Graphics on the Canvas (Canvas)
        • Using Animation
          • Animation Overview
          • Property Animation
            • Property Animation Overview
            • Implementing Property Animation
            • Custom Property Animation
          • Transition Animation
            • Transition Animation Overview
            • Enter/Exit Transition
            • Modal Transition
            • Shared Element Transition
            • Rotation Transition Animation
            • Page Transition Animation (Not Recommended)
          • Particle Animation
          • Component Animation
          • Animation Curve
            • Animation Curve Overview
            • Traditional Curve
            • Spring Curve
          • Animation Smoothing
          • Animation Effects
            • Blur Effect
            • Shadow Effect
            • Color Effect
          • Frame Animation (ohos.animator)
        • Using Interaction Events
          • Interaction Event Overview
          • Universal Events
            • Event Dispatch
            • Touchscreen Event
            • Keyboard and Mouse Event
            • Focus Event
            • Drag Event
          • Gesture Events
            • Gesture Binding
            • Single Gesture
            • Combined Gestures
            • Multi-level Gesture Events
            • Gesture Judgment
        • Using Customization Capabilities
          • Customization Capability Overview
          • Using Custom Nodes
            • Custom Node Overview
            • Custom Placeholder Node
            • Custom Component Node (FrameNode)
            • Custom RenderNode (RenderNode)
            • Custom Declarative Node (BuilderNode)
          • Custom Extension Capability
            • Custom Extension Capability Overview
            • Attribute Modifier (AttributeModifier)
            • Attribute Updater (AttributeUpdater)
        • Using the Mirroring Capability
        • Supporting Aging-Friendly Design
        • Theme Settings
          • Dark and Light Mode Adaptation
          • Configuring In-Application Theme Skinning
        • Using the UI Context API for UI Operations (UIContext)
        • Launching Pages Across Processes
          • Atomic Service Full Screen Launch Component (FullScreenLaunchComponent)
        • Cross-Process Application Capability Extension (UIExtension, for System Applications Only)
        • Using NDK APIs to Build UIs
          • NDK API Overview
          • Integrating with ArkTS Pages
          • Using Interaction Events
            • Listening for Component Events
            • Binding Gesture Events
          • Using Animations
          • Developing a Long List with Lazy Loading
          • Building Dialog Boxes
          • Building Custom Components
          • Embedded ArkTS Component
          • Integrating Accessibility Through XComponent
      • UI Development (JavaScript-compatible Web-like Development Paradigm)
        • UI Development (JavaScript-compatible Web-like Development Paradigm) Overview
        • Framework Overview
          • File Organization
          • "js" Tag
          • app.js
          • Syntax
            • HML
            • CSS
            • JavaScript
          • Lifecycle
          • Resource Limitations and Access
          • Multi-Language Capability
        • Building the UI
          • Component Overview
          • Building a Layout
            • Layout Description
            • Adding Title and Paragraph Text
            • Adding an Image
            • Adding a Comment
            • Adding a Container
          • Adding Interactions
          • Developing Animations
          • Defining Gesture Events
          • Defining Page Routes
        • Common Component Development Guidelines
          • Container Component Development
            • List Development
            • Dialog Development
            • Form Development
            • Stepper Development
            • Tabs Development
            • Swiper Development
          • Basic Component Development
            • Text Development
            • Input Development
            • Button Development
            • Picker Development
            • Image Development
            • Image-animator Development
            • Rating Development
            • Slider Development
            • Chart Development
            • Switch Development
            • Toolbar Development
            • Menu Development
            • Marquee Development
            • Qrcode Development
            • Search Development
          • Canvas Development
            • Canvas
            • CanvasRenderingContext2D
            • Path2D
            • OffscreenCanvasRenderingContext2D
          • Grid Layout
          • SVG Development
            • Basics
            • Graph Drawing
            • Path Drawing
            • Text Drawing
        • Animation Development Guidelines
          • CSS Animation
            • Defining Attribute Style Animations
            • Defining Animations with the transform Attribute
            • Defining Animations with the background-position Attribute
            • Defining Animations for SVG Components
          • JavaScript Animation
            • Component Animation
            • Interpolator Animation
              • Animation Effect
              • Animation Frame
        • Custom Components
        • WebGL
          • Using WebGL to Draw Graphics
      • Window Manager
        • Window Overview
        • Application Window Development (Stage Model)
        • Application Window Development (FA Model)
        • System Window Development (Stage Model Only)
        • WindowExtensionAbility (for System Applications Only)
        • Using NativeWindowEventFilter to Filter Multimodal Input Events (C/C++)
      • Display Management
        • Display Management Overview
        • Using OH_DisplayManager to Obtain Basic Display Information and Listen for Status Changes (C/C++)
        • Using Display to Obtain Display Properties and Listen for Status Changes (ArkTS)
        • Creating and Using a Virtual Screen (ArkTS) (for System Applications Only)
    • ArkWeb
      • Introduction to ArkWeb
      • ArkWeb Process
      • Lifecycle of Web Components
      • Setting Basic Attributes and Events
        • Developing UserAgent
        • Managing Cookies and Data Storage
        • Setting the Dark Mode
        • Opening Pages in a New Window
        • Managing Location Permissions
        • Using Incognito Mode
        • Using Motion and Direction Sensors
      • Web Rendering and Layout
        • Rendering Modes of the Web Component
        • Fitting In the Page Content Layout
        • Optimizing the Page Flash During the Redirection
      • Using Frontend Page JavaScript Code on the Application
        • Invoking Frontend Page Functions on the Application
        • Invoking Application Functions on the Frontend Page
        • Establishing a Data Channel Between the Application and the Frontend Page
        • Mutual Invoking Between the Application Side and Frontend Pages (C/C++)
        • Establishing a Data Channel Between the Application and the Frontend Page (C/C++)
      • Managing Web Page Interactions
        • Implementing Nested Scrolling
        • Implementing Content Scrolling
        • Docking to the Soft Keyboard
        • Managing Focus
      • Managing Cyber Security and Privacy for the Web Component
        • Resolving Cross-Origin Resource Access
        • Intelligent Tracking Prevention
        • Enabling Ads Blocking for Web Components
        • Using Secure Shield Mode
      • Managing Web Page Loading and Browsing Records
        • Loading Pages
        • Managing Page Redirection and Browsing History Navigation
        • Intercepting Network Requests Initiated by the Web Component
        • Customizing Page Request Responses
        • Accelerating Web Page Access with Preconnecting and Prefetching
        • Setting Back-forward Cache
        • Migrating Web Components Between Different Windows
      • Managing Web Page File Upload and Download
        • Uploading Files
        • Downloading Files
      • Using Web Multimedia
        • Holding a Video Conference with WebRTC
        • Taking Over the Media Playback on Web Pages
      • Processing Web Page Content
        • Printing Frontend Pages
        • Previewing PDF Files
        • Calculating and Adjusting Safe Area Insets
      • Using Same-Layer Rendering
      • Using Offline Web Components
      • Web Debugging
        • Debugging Frontend Pages by Using DevTools
        • Using Crashpad to Collect Web Component Crash Information
    • Background Tasks Kit
      • Background Task Management
      • Background Task Overview
      • Transient Task (ArkTS)
      • Transient Task (C/C++)
      • Continuous Task (ArkTS)
      • Deferred Task (ArkTS)
      • Agent-powered Reminder (ArkTS)
      • Requesting Efficiency Resources (ArkTS) (for Privileged System Applications Only)
      • Device Usage Statistics (for System Applications Only)
        • Device Usage Statistics Overview
        • Device Usage Statistics Development
    • Core File Kit
      • Introduction to Core File Kit
      • Application Files
        • Application File Overview
        • Application Sandbox
        • Application File Access and Management
          • Accessing Application Files (ArkTS)
          • Accessing Application Files (C/C++)
          • Obtaining Application and File System Space Statistics
        • Pushing Files to an Application Sandbox Directory
        • Sharing an Application File
        • Application Data Backup and Restore
          • Application Data Backup and Restore Overview
          • Accessing Backup and Restore
          • Triggering Backup and Restore (for System Applications Only)
      • User Files
        • User File Overview
        • User File URI
        • FileUri Development (C/C++)
        • Obtaining the User Directory Environment (C/C++)
        • Selecting and Saving User Files
          • Selecting User Files
          • Saving User Files
          • Persisting Temporary Permissions (ArkTS)
          • Persisting Temporary Permissions (C/C++)
        • Obtaining and Accessing a User Directory
        • Developing a File Manager Application (for System Applications Only)
        • Managing External Storage Devices (for System Applications Only)
      • Distributed File System
        • Distributed File System Overview
        • Setting the Security Level of a Distributed File
        • Accessing Files Across Devices
        • Copying Files Across Devices
    • Form Kit
      • Introduction to Form Kit
      • Service Widget Development in Stage Model
        • Developing an ArkTS Widget
          • ArkTS Widget Working Principles
          • ArkTS Widget Related Modules
          • ArkTS Widget Development
            • Creating an ArkTS Widget
            • Configuring Widget Configuration Files
            • Widget Lifecycle Management
            • Widget Page Development
              • Widget Page Capability Overview
              • Using Animations in the Widget
              • Applying Custom Drawing in the Widget
            • Widget Event Development
              • Widget Event Capability Overview
              • Launching the UIAbility of the Widget Provider Through the router Event
              • Launching the UIAbility of the Widget Provider in the Background Through the call Event
              • Updating Widget Content Through the message Event
              • Updating Widget Content Through the router or call Event
            • Widget Data Interaction
              • Updating Widget Content
              • Interval-based Widget Updates
              • Time-specific Widget Updates
              • Updating Widget Content Through a Proxy
              • Updating Widget Content by Widget Host (for System Applications Only)
              • Updating Local and Online Images in the Widget
              • Updating Widget Content by State
          • Widget Host Development (for System Applications Only)
        • Developing a JS Widget
      • Service Widget Development in FA Model
    • IME Kit
      • Introduction to IME Kit
      • Implementing an Input Method Application
      • Using the Input Method in a Custom Edit Box
      • Switching Between Input Methods
      • Setting Input Method Subtypes
      • Custom Edit Box Development Guide (C/C++)
    • IPC Kit
      • Introduction to IPC Kit
      • IPC and RPC Development
      • Subscribing to State Changes of a Remote Object
      • IPC Development (C/C++)
    • Localization Kit
      • Introduction to Localization Kit
      • Application Internationalization
        • UI Design for Internationalization
        • Locale and Cultural Habit Division
        • Language and User Preference Setting
          • System Language and Region Setting
          • Preferred Language Setting
          • User Preference Setting (for System Applications Only)
        • Date and Time Formatting
        • Number and Unit of Measurement Formatting
        • Phone Number Formatting
        • Calendar Setting
        • Time Zone and DST Setting
          • Timezone Setting
          • DST Transition
        • Multilingual Sorting
          • Overview of Multilingual Sorting
          • Sorting by Local Habits
          • Sorting by Indexes
        • Character Processing
        • Name Localization
          • Language and Locale Name Localization
          • Time Zone Name Localization
      • Application Localization
        • Multilingual Resource Provisioning
        • Application Translation
          • Hard Coding and Concatenation Prevention
          • Scene and Context Clarification for Translation
          • Singular/Plural Form Selection
      • Localization Testing
        • Pseudo-Localization Testing
          • Overview of Pseudo-Localization Testing
          • Pseudo-Localization Testing for Translation
          • Pseudo-Localization Testing for UI Mirroring
        • Linguistic Testing
  • System
    • Security
      • Application Access Control
        • Access Control Overview
        • Application Permission Management
          • Application Permission Management Overview
          • Requesting Application Permissions
            • Workflow for Using Permissions
            • Declaring Permissions
            • Requesting User Authorization
            • Requesting User Authorization Again
            • Requesting One-Time User Authorization
            • Requesting Restricted Permissions
          • Application Permissions
            • Open system_grant Permissions
            • Open user_grant Permissions
            • Permissions for System Applications
            • Permissions for Enterprise Applications
            • Permissions for MDM Applications
          • Application Permission Groups
        • Using Security Components
          • Security Component Overview
          • Using PasteButton
          • Using SaveButton
          • Using LocationButton
      • Asset Store Kit
        • Introduction to Asset Store Kit
        • Scenarios
          • Protecting Asset Data
          • Protecting Asset Data with User Authentication
        • Asset Store Kit Development (ArkTS)
          • Adding an Asset (ArkTS)
          • Removing Assets (ArkTS)
          • Updating an Asset (ArkTS)
          • Querying Assets (ArkTS)
          • Querying Assets Used for User Authentication (ArkTS)
          • Performing Asset Operations in Specified User Space (for System Applications Only) (ArkTS)
        • Asset Store Kit Development (C/C++)
          • Adding an Asset (C/C++)
          • Removing Assets (C/C++)
          • Updating an Asset (C/C++)
          • Querying Assets (C/C++)
      • Crypto Architecture Kit
        • Introduction to Crypto Architecture Kit
        • Key Generation and Conversion
          • Key Generation and Conversion Overview
          • Key Generation and Conversion Specifications
            • Symmetric Key Generation and Conversion Specifications
            • Asymmetric Key Generation and Conversion Specifications
          • Key Generation and Conversion Development
            • Randomly Generating a Symmetric Key (ArkTS)
            • Randomly Generating a Symmetric Key (C/C++)
            • Converting Binary Data into a Symmetric Key (ArkTS)
            • Converting Binary Data into a Symmetric Key (C/C++)
            • Randomly Generating an Asymmetric Key Pair (ArkTS)
            • Randomly Generating an Asymmetric Key Pair (C/C++)
            • Converting Binary Data into an Asymmetric Key Pair (ArkTS)
            • Converting Binary Data into an Asymmetric Key Pair (C/C++)
            • Generating an Asymmetric Key Pair Based on Key Parameters (ArkTS)
            • Converting a Compressed or Uncompressed ECC Public Key (ArkTS)
            • Converting a Compressed or Uncompressed ECC Public Key (C/C++)
            • Converting Compressed or Uncompressed ECC Point Data (ArkTS)
            • Converting a PEM String into an Asymmetric Key Pair (ArkTS)
            • Converting a PEM String into an Asymmetric Key Pair (C/C++)
        • Encryption and Decryption
          • Encryption and Decryption Overview
          • Encryption and Decryption Algorithm Specifications
            • Symmetric Key Encryption and Decryption Algorithm Specifications
            • Asymmetric Key Encryption and Decryption Algorithm Specifications
            • Encryption and Decryption by Segment
          • Encryption and Decryption Development
            • Encryption and Decryption with an AES Symmetric Key (GCM Mode) (ArkTS)
            • Encryption and Decryption with an AES Symmetric Key (GCM Mode) (C/C++)
            • Encryption and Decryption with an AES Symmetric Key (CCM Mode) (ArkTS)
            • Encryption and Decryption with an AES Symmetric Key (CCM Mode) (C/C++)
            • Encryption and Decryption with an AES Symmetric Key (CBC Mode) (ArkTS)
            • Encryption and Decryption with an AES Symmetric Key (CBC Mode) (C/C++)
            • Encryption and Decryption with an AES Symmetric Key (ECB Mode) (ArkTS)
            • Encryption and Decryption with an AES Symmetric Key (ECB Mode) (C/C++)
            • Encryption and Decryption by Segment with an AES Symmetric Key (GCM Mode) (ArkTS)
            • Encryption and Decryption by Segment with an AES Symmetric Key (GCM Mode) (C/C++)
            • Encryption and Decryption with a 3DES Symmetric Key (ECB Mode) (ArkTS)
            • Encryption and Decryption with a 3DES Symmetric Key (ECB Mode) (C/C++)
            • Encryption and Decryption with an SM4 Symmetric Key (ECB Mode) (ArkTS)
            • Encryption and Decryption with an SM4 Symmetric Key (ECB Mode) (C/C++)
            • Encryption and Decryption with an SM4 Symmetric Key (CBC Mode) (ArkTS)
            • Encryption and Decryption with an SM4 Symmetric Key (CBC Mode) (C/C++)
            • Encryption and Decryption with an SM4 Symmetric Key (GCM Mode) (ArkTS)
            • Encryption and Decryption with an SM4 Symmetric Key (GCM Mode) (C/C++)
            • Encryption and Decryption by Segment with an SM4 Symmetric Key (GCM Mode) (ArkTS)
            • Encryption and Decryption by Segment with an SM4 Symmetric Key (GCM Mode) (C/C++)
            • Encryption and Decryption with an RSA Asymmetric Key Pair (PKCS1)
            • Encryption and Decryption by Segment with an RSA Asymmetric Key Pair
            • Encryption and Decryption with an RSA Asymmetric Key Pair (PKCS1_OAEP)
            • Encryption and Decryption with an SM2 Asymmetric Key Pair
            • Converting SM2 Ciphertext
        • Signing and Signature Verification
          • Signing and Signature Verification Overview and Algorithm Specifications
          • Signing and Signature Verification Development
            • Signing and Signature Verification with an RSA Key Pair (PKCS1 Mode) (ArkTS)
            • Signature Verification with an RSA Key Pair (PKCS1 Mode) (C/C++)
            • Signing and Signature Recovery Using an RSA Key Pair (PKCS1 Mode) (ArkTS)
            • Signature Recovery Using an RSA Key Pair (PKCS1 Mode) (C/C++)
            • Signing and Signature Verification by Segment with an RSA Key Pair (PKCS1 Mode) (ArkTS)
            • Signature Verification by Segment with an RSA Key Pair (PKCS1 Mode) (C/C++)
            • Signing and Signature Verification with an RSA Key Pair (PSS Mode) (ArkTS)
            • Signature Verification with an RSA Key Pair (PSS Mode) (C/C++)
            • Signing and Signature Verification with an ECDSA Key Pair (ArkTS)
            • Signature Verification with an ECDSA Key Pair (ArkTS) (C/C++)
            • Signing and Signature Verification with an SM2 Key Pair (ArkTS)
            • Signature Verification with an SM2 Key Pair (C/C++)
        • Key Agreement
          • Key Agreement Overview and Algorithm Specifications
          • Key Agreement Development
            • Key Agreement Using ECDH
            • Key Agreement Using X25519
            • Key Agreement Using DH
        • MD Operations
          • MD Overview and Algorithm Specifications
          • MD Generation Development
            • Generating an MD Using SHA-256 (ArkTS)
            • Generating an MD Using SHA-256 (C/C++)
            • Generating an MD Using MD5 (ArkTS)
            • Generating an MD Using MD5 (C/C++)
        • MAC Operation
        • Random Number Generation
        • Key Derivation
          • Key Derivation Overview and Algorithm Specifications
          • Key Derivation Using PBKDF2
          • Key Derivation Using HKDF
      • Data Protection Kit
        • DLP Service
          • Introduction to the DLP Service
          • DLP Service Development
      • Device Certificate Kit
        • Introduction to Device Certificate Kit
        • Certificate Framework
          • Certificate Framework Overview
          • Certificate Development
          • Certificate Extension Development
          • CRL Development
          • Creating a TrustAnchor Object Array from a p12 File
          • Certificate Chain Validator Development
          • Certificate and CRL Collection Development
          • Certificate Chain Development
        • Certificate Management
          • Certificate Management Overview
          • Certificate Management Development
          • Certificate Management Dialog Box Development
      • Universal Keystore Kit
        • Introduction to Universal Keystore Kit
        • Basic Concepts of HUKS
        • Key Generation and Import
          • Key Generation
            • Key Generation Overview and Algorithm Specifications
            • Development
              • Generating a Key (ArkTS)
              • Generating a Key (C/C++)
          • Key Import
            • Key Import Overview and Algorithm Specifications
            • Development
              • Importing a Key in Plaintext (ArkTS)
              • Importing a Key in Plaintext (C/C++)
              • Importing a Key in Ciphertext (ArkTS)
              • Importing a Key in Ciphertext (C/C++)
        • Key Use
          • General Process of Using a Key
          • Encryption and Decryption
            • Encryption and Decryption Overview and Algorithm Specifications
            • Development
              • Encryption and Decryption (ArkTS)
              • Encryption and Decryption (C/C++)
          • Signing and Signature Verification
            • Signing and Signature Verification Overview and Algorithm Specifications
            • Development
              • Signing and Signature Verification (ArkTS)
              • Signing and Signature Verification (C/C++)
          • Key Agreement
            • Key Agreement Overview and Algorithm Specifications
            • Development
              • Key Agreement (ArkTS)
              • Key Agreement (C/C++)
          • Key Derivation
            • Key Derivation Overview and Algorithm Specifications
            • Development
              • Key Derivation (ArkTS)
              • Key Derivation (C/C++)
          • Access Control
            • HUKS Access Control Overview
            • Development
              • HUKS Access Control Development
              • Refined Access Control Development
          • HMAC
            • HMAC Overview and Algorithm Specifications
            • Development
              • HMAC(ArkTS)
              • HMAC(C/C++)
        • Key Deletion
          • Deleting a Key (ArkTS)
          • Deleting a Key (C/C++)
        • Key Attestation
          • Key Attestation Overview and Algorithm Specifications
          • Development
            • Anonymous Key Attestation (ArkTS)
            • Anonymous Key Attestation (C/C++)
            • Non-anonymous Key Attestation (ArkTS)
            • Non-anonymous Key Attestation (C/C++)
        • Other Operations
          • Checking Key Existence
            • Checking a Key (ArkTS)
            • Checking a Key (C/C++)
          • Obtaining Key Properties
            • Obtaining Key Properties (ArkTS)
            • Obtaining Key Properties (C/C++)
          • Exporting a Key
            • Exporting a Key (ArkTS)
            • Exporting a Key (C/C++)
          • Querying Key Aliases
            • Querying Key Aliases (ArkTS)
            • Querying Key Aliases (C/C++)
          • Specifying the User for Key Operations (for System Applications Only)
      • User Authentication Kit
        • Introduction to User Authentication Kit
        • User Authentication Development
          • Before You Start
          • Obtaining Supported Authentication Capabilities
          • Initiating User Authentication
          • Canceling User Authentication
          • Applying Custom Authentication
          • Obtaining Enrolled Credential Information
          • Using Embedded User Identity Authentication Icons
    • Network
      • Connectivity Kit
        • Introduction to Connectivity Kit
        • Bluetooth
          • Bluetooth Overview
          • Bluetooth Setting Development
          • BLE Development
          • GATT Development
          • SPP Development
        • NFC
          • NFC Tag Read/Write Development
          • HCE Development
          • SE Access Development
        • WLAN
          • WLAN Service Development Overview
          • P2P Development Guide
      • Distributed Service Kit
        • Introduction to Distributed Service Kit
        • Distributed Device Management Development
      • Network Kit
        • Introduction to Network Kit
        • Data Transmission Capabilities of Network Kit
          • HTTP Data Request
          • WebSocket Connection
          • WebSocket Connection (C/C++)
          • Socket Connection
          • MDNS
        • Network Management Capabilities of Network Kit
          • Network Connection Management
          • NetConnection Development (C/C++)
          • Traffic Management
          • VPN Extension Ability Development
          • Network Firewall (For System Applications Only)
          • Network Sharing (for System Applications Only)
          • Ethernet Connection Management (for System Applications Only)
          • VPN Management (for System Applications Only)
      • Telephony Kit
        • Introduction to Telephony Kit
        • Call Service Development
        • SMS Service Development
    • Basic Functions
      • Basic Services Kit
        • Introduction to Basic Services Kit
        • Process and Thread Communication
          • Using Common Events for IPC
            • Introduction to Common Events
            • Subscribing to Common Events in Dynamic Mode
            • Subscribing to Common Events in Static Mode (for System Applications Only)
            • Unsubscribing from Common Events in Dynamic Mode
            • Publishing Common Events
            • Removing Sticky Common Events (for System Applications Only)
          • Using Emitter for Inter-Thread Communication
        • Account Management
          • Account Management Overview
          • System Accounts
            • Managing System Accounts (for System Applications Only)
            • Applying Constraints for System Accounts
            • Managing System Account Credentials (for System Applications Only)
          • Domain Account (for System Applications Only)
            • Managing Domain Accounts
            • Authenticating Domain Accounts
            • Managing Domain Account Plugins
          • Distributed Account (for System Applications Only)
            • Managing Distributed Accounts
          • App Account
            • Managing App Accounts
        • USB Service
          • USB Service Development Overview
          • USB Service Development
          • FAQs
        • Update Service
          • Sample Server Development Overview
          • Sample Server Development
        • Pasteboard Service
          • Requesting Permissions to Access the Pasteboard
          • Using the Pasteboard to Copy and Paste
          • Using the Pasteboard to Copy and Paste (C/C++)
          • Using the Delayed Copy and Paste Function of the Pasteboard
        • Upload and Download
          • Uploading and Downloading Application Files
        • Compression and Decompression
          • Compressing and Decompressing Files
      • Function Flow Runtime Kit
        • Introduction to Function Flow Runtime Kit
        • Function Flow Runtime Paradigms
        • Function Flow Runtime Development Samples (C)
          • Serial Queue (C)
          • Concurrent Queue (C)
          • Task Graph (C)
        • Function Flow Runtime Development Samples (C++)
          • Serial Queue (C++)
          • Concurrent Queue (C++)
          • Task Graph (C++)
        • Function Flow Runtime Development
        • Function Flow Runtime C APIs
      • Input Kit
        • Introduction to Input Kit
        • Input Device Development
        • Mouse Pointer Development
        • Input Monitor Development
        • Event Injection Development
        • Input Consumer Development
        • Shortcut Key Development
        • Event Listening Development (C/C++)
        • Event Interception Development (C/C++)
      • MDM Kit
        • Introduction to MDM Kit
        • MDM Kit Development
        • EnterpriseAdminExtensionAbility Development
    • Hardware
      • Driver Development Kit
        • Introduction to Driver Development Kit
        • Peripheral Driver Client Development
        • DriverExtensionAbility Development
        • FAQs
      • Multimodal Awareness Kit
        • Introduction to MultimodalAwareness Kit
        • Stationary Development
      • Sensor Service Kit
        • Introduction to Sensor Service Kit
        • Sensor
          • Sensor Overview
          • Sensor Development (ArkTS)
          • Sensor Development (C/C++)
        • Vibrator
          • Vibrator Overview
          • Vibrator Development (ArkTS)
          • Vibrator Development (C/C++)
    • Debugging Tools
      • Performance Analysis Kit
        • Introduction to Performance Analysis Kit
        • HiLog Usage
          • Using HiLog (ArkTS)
          • Using HiLog (C/C++)
        • HiAppEvent Usage
          • Introduction to HiAppEvent
          • Event Subscription
            • Application Events
              • Subscribing to Application Events (ArkTS)
              • Subscribing to Application Events (C/C++)
            • System Events
              • Crash Events
                • Crash Event Overview
                • Subscribing to Crash Events (ArkTS)
                • Subscribing to Crash Events (C/C++)
              • Freeze Events
                • Freeze Event Overview
                • Subscribing to Freeze Events (ArkTS)
                • Subscribing to Freeze Events (C/C++)
              • Resource Leak Events
                • Resource Leak Event Overview
                • Subscribing to Resource Leak Events (ArkTS)
                • Subscribing to Resource Leak Events (C/C++)
              • Address Sanitizer Events
                • Address Sanitizer Event Overview
                • Subscribing to Address Sanitizer Events (ArkTS)
                • Subscribing to Address Sanitizer Events (C/C++)
              • Main Thread Jank Events
                • Main Thread Jank Event Overview
                • Subscribing to Main Thread Jank Events (ArkTS)
                • Subscribing to Main Thread Jank Events (C/C++)
        • Event Reporting
        • HiTraceMeter
          • Using HiTraceMeter (ArkTS/JS)
          • Using HiTraceMeter (C/C++)
          • Viewing HiTraceMeter Logs
        • HiTraceChain
          • Using HiTraceChain (ArkTS/JS)
          • Using HiTraceChain (C/C++)
        • HiChecker
          • Using HiChecker (ArkTS/JS)
        • HiDebug
          • Using HiDebug (ArkTS)
          • Using HiDebug (C/C++)
        • HiCollie
          • Using HiCollie (C/C++)
        • Error Management
          • Development of Error Manager
          • Development of Application Recovery
        • Fault Analysis
          • Analyzing JS Crash
          • Analyzing CPP Crash
          • Analyzing App Freeze
        • Command Line Tools
          • hdc
          • hilog
          • hidumper
          • hitrace
          • hiperf
        • hisysevent
        • uinput
      • Test Kit
        • arkXtest User Guide
        • SmartPerf User Guide
        • wukong User Guide
      • Debugging Commands
        • Ability Assistant
        • Bundle Manager
        • Packing and Unpacking Tools
          • Packing Tool
          • Unpacking Tool
        • App Check Tool
        • Common Event Manager
        • Advanced Notification Manager
        • Enterprise Device Manager
        • restool
        • LLDB
        • param
        • power-shell
        • Access Token Manager
        • Account Manager
        • Command Line Utilities
          • Toybox
          • mediatool
          • devicedebug
          • rawheap-translator
  • Media
    • Audio Kit
      • Introduction to Audio Kit
      • Selecting an Appropriate Audio Stream Type
      • Introduction to Audio Focus and Audio Session
      • Audio Focus Management
        • Using AudioSession to Manage Audio Focus (ArkTS)
        • Using AudioSession to Manage Audio Focus (C/C++)
      • Audio Playback
        • Audio Playback Overview
        • Using AudioRenderer for Audio Playback
        • Responding to Audio Output Device Changes
        • Using TonePlayer for Audio Playback (for System Applications Only)
        • Using OHAudio for Audio Playback (C/C++)
        • Using AudioHaptic for Audio-Haptic Playback
        • Volume Management
        • Audio Effect Management
        • Spatial Audio Management (for System Applications Only)
        • Audio Playback Stream Management
        • Managing Global Audio Output Devices
        • Distributed Audio Playback (for System Applications Only)
      • Audio Recording
        • Audio Recording Overview
        • Using AudioCapturer for Audio Recording
        • Using OHAudio for Audio Recording (C/C++)
        • Microphone Management
        • Audio Recording Stream Management
        • Managing Global Audio Input Devices
      • Audio Call
        • Audio Call Overview
        • Developing Audio Call
      • Not Recommended
        • Switching from OpenSL ES to OHAudio (C/C++)
        • Using OpenSL ES for Audio Playback (C/C++)
        • Using OpenSL ES for Audio Recording (C/C++)
    • AVCodec Kit
      • Introduction to AVCodec Kit
      • AVCodec Supported Formats
      • Audio and Video Codecs
        • Obtaining Supported Codecs
        • Audio Encoding
        • Audio Decoding
        • Video Encoding
        • Temporal Layered Video Encoding
        • Video Encoding Configurations for Typical Scenarios
        • Video Decoding
        • Concurrently Creating a Video Decoder and Initializing NativeWindow
      • Media Data Muxing and Demuxing
        • Media Data Muxing
        • Media Data Demuxing
    • AVSession Kit
      • Introduction to AVSession Kit
      • Local AVSession
        • Local AVSession Overview
        • AVSession Provider
        • AVSession Provider (C/C++)
        • Accessing AVSession
        • AVSession Controller (for System Applications Only)
      • Distributed AVSession
        • Distributed AVSession Overview (for System Applications Only)
        • Using Distributed AVSession (for System Applications Only)
        • Using the Call Device Switching Component
    • Camera Kit
      • Introduction to Camera Kit
      • Camera Development Preparations
      • Camera Development (ArkTS)
        • Camera Device Management (ArkTS)
        • Device Input Management (ArkTS)
        • Camera Session Management (ArkTS)
        • Preview (ArkTS)
        • Photo Capture (ArkTS)
        • Video Recording (ArkTS)
        • Camera Metadata (ArkTS)
        • Using the Flashlight (ArkTS)
        • Adapting to Camera Changes in Different Folding States (ArkTS)
        • High-Performance Photo Capture (for System Applications Only) (ArkTS)
        • Deferred Photo Delivery (ArkTS)
        • Moving Photos (ArkTS)
        • Basic Camera Animation (ArkTS)
        • Using the Camera in the Worker Thread (ArkTS)
        • Depth Data (for System Applications Only) (ArkTS)
      • Camera Best Practices (ArkTS)
        • Using the Camera Picker (ArkTS)
        • Photo Capture Sample (ArkTS)
        • Video Recording Sample (ArkTS)
        • Dual-Channel Preview (ArkTS)
        • Deferred Photo Delivery Sample (ArkTS)
        • Sample for Camera Recovery from the Background (ArkTS)
        • Using Performance Improvement Features (for System Applications Only) (ArkTS)
        • High-Performance Photo Capture Sample (for System Applications Only) (ArkTS)
      • Camera Development (C/C++)
        • Camera Device Management (C/C++)
        • Device Input Management (C/C++)
        • Camera Session Management (C/C++)
        • Preview (C/C++)
        • Secondary Processing of Preview Streams (C/C++)
        • Photo Capture (C/C++)
        • Deferred Photo Delivery (C/C++)
        • Video Recording (C/C++)
        • Camera Metadata (C/C++)
        • Using the Flashlight (C/C++)
      • Camera Best Practices (C/C++)
        • Camera Photographing Sample (C/C++)
        • Photo Capture Sample (C/C++)
    • DRM Kit
      • Introduction to DRM Kit
      • DRM Development (ArkTS)
        • DRM Media Key System Management (ArkTS)
        • DRM Media Key Session Management (ArkTS)
      • DRM Development (C/C++)
        • DRM Media Key System Management (C/C++)
        • DRM Media Key Session Management (C/C++)
    • Image Kit
      • Introduction to Image Kit
      • Image Development (ArkTS)
        • Using ImageSource to Encode Images
        • Using ImageSource to Decode Pictures
        • Using PixelMap to Transform Images
        • Using PixelMap to Perform PixelMap Operations
        • Using ImagePacker to Encode Images
        • Using ImagePacker to Encode Pictures
        • Editing EXIF Data
      • Image Development (C/C++)
        • Introduction to the Image_NativeModule Structs
        • Using Image_NativeModule to Decode Images
        • Using Image_NativeModule to Decode Pictures
        • Using Image_NativeModule to Receive Images
        • Using Image_NativeModule for PixelMap Operations
        • Using Image_NativeModule to Process Image Information
        • Using Image_NativeModule to Encode Images
        • Using Image_NativeModule to Encode Pictures
        • Using ImageEffect to Edit Images
      • Image Development (Dependent on JS Objects) (C/C++)
        • Using Image to Decode Images
        • Using Image to Receive Images
        • Using Image to Transform Images
        • Using PixelMap to Process PixelMap Data
        • Using Image to Encode Images
    • Media Kit
      • Introduction to Media Kit
      • Media Kit Development Overview
      • Media Development (ArkTS)
        • Playback
          • Using AVPlayer for Audio Playback (ArkTS)
          • Using AVPlayer to Play Videos (ArkTS)
          • Using AVPlayer to Set Playback URLs (ArkTS)
          • Using AVPlayer to Play Streaming Media (ArkTS)
          • Using AVPlayer to Add External Subtitles to Videos (ArkTS)
          • Using SoundPool to Play Short Sounds (ArkTS)
        • Recording
          • Using AVRecorder to Record Audio (ArkTS)
          • Using AVRecorder to Record Videos (ArkTS)
          • Using AVScreenCaptureRecorder to Capture Screens and Write Them to Files (ArkTS)
        • Media Information Query
          • Using AVMetadataExtractor to Extract Audio and Video Metadata (ArkTS)
          • Using AVImageGenerator to Extract Video Images at a Specified Time (ArkTS)
        • Video Transcoding
          • Using AVTranscoder to Transcode Videos (ArkTS)
      • Media Development (C/C++)
        • Playback
          • Using AVPlayer to Play Audio (C/C++)
          • Using AVPlayer to Play Video (C/C++)
        • Screen Capture
          • Using AVScreenCapture to Capture Screens and Obtain Streams (C/C++)
          • Using AVScreenCapture to Capture Screens and Write Them to Files (C/C++)
    • Media Library Kit
      • Introduction to Media Library Kit
      • Selecting Media Assets Using Picker
      • Creating a Media Asset Using SaveButton
      • Moving Photos
        • Accessing and Managing Moving Photos
        • Playing Moving Photos with MovingPhotoView
      • Restricted Open Capabilities
        • Before You Start
        • Managing Media Assets
        • Managing User Albums
        • Managing System Albums
        • Observing Media Assets
        • Requesting Media Assets Using MediaAssetManager (C/C++)
  • Graphics
    • ArkGraphics 2D
      • Introduction to ArkGraphics 2D
      • Using Variable Frame Rates
        • Introduction to Variable Frame Rates
        • Requesting Frame Rates for Animations
        • Requesting Frame Rates for UI Components
        • Requesting Frame Rates for Custom Content
        • Native DisplaySoloist Development (C/C++)
      • Overdraw Debugging
      • Graphics Drawing and Display
        • Overview of Graphics Drawing and Display
        • Canvas Acquisition and Display of Drawing Results
          • Obtaining a Canvas and Displaying Drawing Results (ArkTS)
          • Obtaining a Canvas and Displaying Drawing Results (C/C++)
        • Canvas Operations and State Processing
          • Canvas Operations and State Processing (ArkTS)
          • Canvas Operations and State Processing (C/C++)
        • Drawing Effects
          • Overview of Drawing Effects
          • Basic Drawing Effects (ArkTS)
          • Complex Drawing Effects (ArkTS)
          • Basic Drawing Effects (C/C++)
          • Complex Drawing Effects (C/C++)
        • Primitive Drawing
          • Overview of Primitive Drawing
          • Drawing Geometric Shapes (ArkTS)
          • Drawing Images
          • Drawing TextBlobs (ArkTS)
          • Drawing Geometric Shapes (C/C++)
          • Drawing Images (C/C++)
          • Drawing TextBlobs (C/C++)
      • Using the Text Module for Text Display
      • Using Theme Fonts (C/C++)
      • Native Buffer Development (C/C++)
      • Native Image Development (C/C++)
      • Native Vsync Development (C/C++)
      • Native Window Development (C/C++)
      • Graphic Development Terms
    • ArkGraphics 3D
      • Introduction to ArkGraphics 3D
      • Building and Managing ArkGraphics 3D Scenes
      • Creating and Using ArkGraphics 3D Resources
      • Controlling and Managing ArkGraphics 3D Scene Animations
  • Applications and Services

    • Ads Kit

      • OAID Service
      • Resetting OAID Information (for System Applications Only)

    • Calendar Kit

      • Introduction to Calendar Kit
      • Calendar Management
      • Event Management

    • Contacts Kit

      • Contacts Kit Development

    • Location Kit

      • Introduction to Location Kit
      • Applying for Location Permissions
      • Obtaining Device Location Information
      • Geocoding and Reverse Geocoding
      • Geofencing
      • FenceExtensionAbility
      • Samples

    • Notification Kit

      • Introduction to Notification Kit
      • Requesting Notification Authorization
      • Managing the Notification Badge
      • Managing Notification Slots
      • Publishing a Notification
        • Publishing a Text Notification
        • Publishing a Progress Notification
        • Publishing Live View Notification (for System Applications Only)
        • Adding a WantAgent Object to a Notification
      • Canceling a Notification
      • Notification Subscription (for System Applications Only)
  • AI
    • MindSpore Lite Kit
      • Introduction to MindSpore Lite Kit
      • Using MindSpore Lite for Offline Model Conversion and Inference
      • Model Deployment
        • Using MindSpore Lite for Model Inference (C/C++)
        • Using the MindSpore Lite Engine for On-Device Training (C/C++)
      • Using MindSpore Lite for Image Classification (ArkTS)
      • Using MindSpore Lite for Image Classification (C/C++)
    • Neural Network Runtime Kit
      • Introduction to Neural Network Runtime Kit
      • Connecting the Neural Network Runtime to an AI Inference Framework
  • NDK Development
    • Getting Started with the NDK
    • Creating an NDK Project
    • Building an NDK Project
      • NDK Project Building Overview
      • Building an NDK Project with the DevEco Studio Template
      • Building an NDK Project with the Command Line CMake
      • Building an NDK Project with Prebuilt Libraries
    • Code Development
      • Development Overview
      • C/C++ Standard Library
        • C/C++ Mechanisms
        • Using fdsan
      • Using Node-API
        • Node-API Overview
        • Node-API Data Types and APIs
        • Node-API Development Specifications
        • Node-API Development Process
        • Node-API Usage Guide
          • Using Node-API Extension APIs
          • Managing Arrays Using Node-API
          • Working with ArrayBuffer Using Node-API
          • Working with BigInt Using Node-API
          • Working with Buffer Using Node-API
          • Creating Basic Data Types Using Node-API
          • Working with Classes Using Node-API
          • Working with Cleanup Hooks Using Node-API
          • Working with Date Using Node-API
          • Error Handling Using Node-API
          • Associating Data with a Running Environment to Tide their Lifecycle Using Node-API
          • Creating and Calling Functions Using Node-API
          • Performing Lifecycle Management Using Node-API
          • Working with Objects Using Node-API
          • Using Other Node-API Utilities
          • Working with Primitives Using Node-API
          • Implementing Asynchronous Operations Using Node-API
          • Setting ArkTS Object Properties Using Node-API
          • Creating and Obtaining String Values Using Node-API
          • Customizing Asynchronous Operations Using Node-API
        • Node-API Use Cases
          • Asynchronous Task Development Using Node-API
          • Thread Safety Development Using Node-API
          • Wrapping a Native Object in an ArkTS Object
          • Wrapping a Native Object in a Sendable ArkTS Object
          • Creating an ArkTS Runtime Environment Using Node-API
          • Loading a Module in the Main Thread Using Node-API
          • Running or Stopping an Event Loop in an Asynchronous Thread Using Node-API Extensions
          • Loading a Module Using Node-API
          • Passing a Task with the Specified Priority to an ArkTS Thread from an Asynchronous Thread Using Node-API
          • Calling an ArkTS Method with Return Value of a Promise Using Node-API
        • Node-API FAQs
      • Using JSVM-API
        • JSVM-API Overview
        • JSVM-API Data Types and APIs
        • JSVM-API Development Process
        • JSVM-API Development Specifications
          • JSVM-API Development Specifications
          • JSVM-API FAQs
        • JSVM-API Usage Guide
          • Working with Task Queues Using JSVM-API
          • Working with VM Snapshots Using JSVM-API
          • Developing Wasm Using JSVM-API
          • Creating and Calling JS Functions Using JSVM-API
          • Performing JSON Operations Using JSVM-API
          • Working with Arrays Using JSVM-API
          • Working with ArrayBuffer Using JSVM-API
          • Working with BigInt Using JSVM-API
          • Working with Classes Using JSVM-API
          • Working with Date Using JSVM-API
          • Working with Objects Using JSVM-API
          • Working with Primitives Using JSVM-API
          • Implementing Asynchronous Operations Using JSVM-API
          • Setting JS Object Properties Using JSVM-API
          • Creating and Obtaining String Values Using JSVM-API
          • Obtaining the JSVM API Version Using JSVM-API
          • Error Handling Using JSVM-API
          • Debugging and Profiling JS Code Using JSVM-API
          • Performing Lifecycle Management Using JSVM-API
          • Performing Memory Management Using JSVM-API
          • Comparing JS Values Using JSVM-API
          • Creating Basic Data Types Using JSVM-API
        • JSVM-API Use Cases
          • JSVM-API Debugging
          • JSVM-API Tuning and Performant Coding Cases
            • Creating and Destroying JS VMs Using JSVM-API
            • Accelerating Compilation Using a Code Cache
            • JSVM Tuning Practices
      • OpenMP Support
        • OpenMP Overview
        • Building and Running Applications Using OpenMP
      • Resource Management
        • Raw File Development
      • Thread Scheduling
        • QoS Development
      • Memory Management
        • Purgeable Memory Development
      • Device Management
        • USB DDK Development
        • HID DDK Development
      • Bundle Management
        • Native Bundle Development
    • Debugging and Profiling
      • Debugging and Profiling Overview
      • Debugging in DevEco Studio
      • C/C++ Memory Error Detection
    • Hardware Compatibility
      • Introduction to Hardware Compatibility
      • OpenHarmony ABIs
      • CPU Features
      • Using Neon Instructions

• API References

  • API Reference Overview

    • SystemCapability
    • SystemCapability List
    • Universal Error Codes

  • Application Framework

    • Ability Kit
      • ArkTS APIs
        • Stage Model
          • @ohos.app.ability.Ability (Ability Base Class)
          • @ohos.app.ability.AbilityConstant (AbilityConstant)
          • @ohos.app.ability.abilityLifecycleCallback (AbilityLifecycleCallback)
          • @ohos.app.ability.AbilityStage (AbilityStage)
          • @ohos.app.ability.ActionExtensionAbility (ExtensionAbility for Custom Actions)
          • @ohos.app.ability.application (Application)
          • @ohos.app.ability.ApplicationStateChangeCallback (ApplicationStateChangeCallback)
          • @ohos.app.ability.AtomicServiceOptions (AtomicServiceOptions)
          • @ohos.app.ability.autoFillManager (autoFillManager)
          • @ohos.app.ability.ChildProcess
          • @ohos.app.ability.childProcessManager (childProcessManager)
          • @ohos.app.ability.ChildProcessArgs (ChildProcessArgs)
          • @ohos.app.ability.ChildProcessOptions (ChildProcessOptions)
          • @ohos.app.ability.common (Context)
          • @ohos.app.ability.contextConstant (ContextConstant)
          • @ohos.app.ability.EmbeddableUIAbility (Embeddable UIAbility)
          • @ohos.app.ability.EmbeddedUIExtensionAbility (ExtensionAbilities for Embeddable UI in Cross-Process Scenarios)
          • @ohos.app.ability.EnvironmentCallback (EnvironmentCallback)
          • @ohos.app.ability.ExtensionAbility (ExtensionAbility Base Class)
          • @ohos.app.ability.insightIntent (insightIntent)
          • @ohos.app.ability.InsightIntentContext (InsightIntent Call Execution Context)
          • @ohos.app.ability.InsightIntentExecutor (Base Class for InsightIntent Call Execution)
          • @ohos.app.ability.PhotoEditorExtensionAbility (Image Editing)
          • @ohos.app.ability.OpenLinkOptions (OpenLinkOptions)
          • @ohos.app.ability.ShareExtensionAbility (ExtensionAbility for Sharing)
          • @ohos.app.ability.StartOptions (StartOptions)
          • @ohos.app.ability.UIAbility (UIAbility)
          • @ohos.app.ability.UIExtensionAbility (Base Class for ExtensionAbilities with UI)
          • @ohos.app.ability.UIExtensionContentSession (UI Operation Class for ExtensionAbilities with UI)
          • @ohos.app.ability.sendableContextManager
          • @ohos.app.appstartup.StartupConfig
          • @ohos.app.appstartup.StartupConfigEntry
          • @ohos.app.appstartup.StartupListener
          • @ohos.app.appstartup.startupManager
          • @ohos.app.appstartup.StartupTask
          • @ohos.app.ability.AbilityConstant (AbilityConstant) (System API)
          • @ohos.app.ability.application (Application) (System API)
          • @ohos.app.ability.AutoFillExtensionAbility (AutoFillExtensionAbility) (System API)
          • @ohos.app.ability.autoFillManager (autoFillManager) (System API)
          • @ohos.app.ability.autoStartupManager (autoStartupManager) (System API)
          • @ohos.app.ability.common (Context) (System API)
          • @ohos.app.ability.dialogSession (dialogSession) (System API)
          • @ohos.app.ability.insightIntent (insightIntent) (System API)
          • @ohos.app.ability.insightIntentDriver (Executing InsightIntent Calls) (System API)
          • @ohos.app.ability.ServiceExtensionAbility (ServiceExtensionAbility) (System API)
          • @ohos.app.ability.StartOptions (StartOptions) (System API)
          • @ohos.app.ability.UIServiceExtensionAbility (UIServiceExtensionAbility) (System API)
          • @ohos.app.ability.UIExtensionContentSession (UI Operation Class for ExtensionAbilities with UI) (System API)
        • FA Model
          • @ohos.ability.ability (Ability)
          • @ohos.ability.featureAbility (FeatureAbility)
          • @ohos.ability.particleAbility (ParticleAbility)
        • Both Models (Recommended)
          • @ohos.abilityAccessCtrl (Ability Access Control)
          • @ohos.ability.screenLockFileManager (Sensitive Data Access Management Under Lock Screen)
          • @ohos.app.ability.abilityManager (AbilityManager)
          • @ohos.app.ability.appManager (appManager)
          • @ohos.app.ability.appRecovery (appRecovery)
          • @ohos.app.ability.Configuration (Configuration)
          • @ohos.app.ability.ConfigurationConstant (ConfigurationConstant)
          • @ohos.app.ability.dataUriUtils (DataUriUtils)
          • @ohos.app.ability.dialogRequest (dialogRequest)
          • @ohos.app.ability.errorManager (ErrorManager)
          • @ohos.app.ability.Want (Want)
          • @ohos.app.ability.wantAgent (WantAgent)
          • @ohos.app.ability.wantConstant (wantConstant)
          • @ohos.continuation.continuationManager (continuationManager)
          • @ohos.abilityAccessCtrl (Application Access Control) (System API)
          • @ohos.ability.screenLockFileManager (Sensitive Data Access Management Under Lock Screen) (System API)
          • @ohos.app.ability.abilityManager (AbilityManager) (System API)
          • @ohos.app.ability.appManager (appManager) (System API)
          • @ohos.app.ability.missionManager (missionManager) (System API)
          • @ohos.app.ability.quickFixManager (quickFixManager) (System API)
          • @ohos.app.ability.wantAgent (WantAgent) (System API)
          • @ohos.app.ability.wantConstant (wantConstant) (System API)
          • @ohos.app.businessAbilityRouter (Business Ability Router) (System API)
          • @ohos.application.uriPermissionManager (URI Permission Management) (System API)
          • @ohos.bundle.bundleManager (bundleManager)
          • @ohos.bundle.defaultAppManager (Default Application Management)
          • @ohos.bundle.overlay (overlay)
          • @ohos.bundle.appControl (appControl) (System API)
          • @ohos.bundle.appDomainVerify (Application Domain Name Verification) (System API)
          • @ohos.bundle.bundleManager (bundleManager) (System API)
          • @ohos.bundle.bundleMonitor (bundleMonitor) (System API)
          • @ohos.bundle.bundleResourceManager (bundleResourceManager) (System API)
          • @ohos.bundle.defaultAppManager (Default Application Management) (System API)
          • @ohos.bundle.distributedBundleManager (distributedBundleManager) (System API)
          • @ohos.bundle.freeInstall (freeInstall) (System API)
          • @ohos.bundle.installer (installer) (System API)
          • @ohos.bundle.launcherBundleManager (launcherBundleManager) (System API)
          • @ohos.bundle.overlay (overlay) (System API)
          • @ohos.bundle.shortcutManager (shortcutManager) (System API)
          • @ohos.distributedMissionManager (Distributed Mission Management) (System API)
          • @ohos.privacyManager (Privacy Management) (System API)
        • Dependent Elements and Definitions
          • ability
            • abilityResult
            • connectOptions
            • dataAbilityHelper
            • dataAbilityOperation
            • dataAbilityResult
            • startAbilityParameter
            • want
          • app
            • appVersionInfo
            • context
            • processInfo
          • application
            • abilityMonitor
            • AbilityRunningInfo
            • AbilityStageContext
            • abilityStageMonitor
            • AbilityStartCallback
            • AbilityStateData
            • ApplicationContext
            • ApplicationStateObserver
            • AppStateData
            • BaseContext
            • Context
            • EmbeddableUIAbilityContext
            • ErrorObserver
            • EventHub
            • ExtensionContext
            • LoopObserver
            • ProcessInformation
            • ProcessRunningInfo
            • UIAbilityContext
            • UIExtensionContext
            • UIServiceExtensionConnectCallback
            • UIServiceProxy
            • ProcessData
            • PhotoEditorExtensionContext
            • SendableContext
            • AbilityFirstFrameStateData (System API)
            • AbilityFirstFrameStateObserver (System API)
            • AbilityForegroundStateObserver (System API)
            • AppForegroundStateObserver (System API)
            • ApplicationContext (System API)
            • AutoFillPopupConfig (System API)
            • AutoFillExtensionContext (System API)
            • AutoFillRequest (System API)
            • AutoFillType (System API)
            • AutoStartupCallback (System API)
            • AutoStartupInfo (System API)
            • Context (System API)
            • ContinuableInfo (System API)
            • ContinueCallback (System API)
            • ContinueDeviceInfo (System API)
            • ContinueMissionInfo (System API)
            • CustomData (System API)
            • ExtensionRunningInfo (System API)
            • MissionCallbacks (System API)
            • MissionDeviceInfo (System API)
            • MissionInfo (System API)
            • MissionListener (System API)
            • MissionParameter (System API)
            • MissionSnapshot (System API)
            • MultiAppMode (System API)
            • PageNodeInfo (System API)
            • RunningAppClone (System API)
            • RunningMultiAppInfo (System API)
            • RunningMultiInstanceInfo (System API)
            • ServiceExtensionContext (System API)
            • UIServiceExtensionContext (System API)
            • UIServiceHostProxy (System API)
            • UIAbilityContext (System API)
            • UIExtensionContext (System API)
            • ViewData (System API)
            • AutoFillRect (System API)
          • bundleManager
            • abilityInfo
            • applicationInfo
            • bundleInfo
            • elementName
            • extensionAbilityInfo
            • hapModuleInfo
            • metadata
            • OverlayModuleInfo
            • Skill
            • ApplicationInfo (System API)
            • AppProvisionInfo (System API)
            • BundlePackInfo (System API)
            • BundleResourceInfo (System API)
            • BusinessAbilityInfo (System API)
            • dispatchInfo (System API)
            • launcherAbilityInfo (System API)
            • LauncherAbilityResourceInfo (System API)
            • permissionDef (System API)
            • recoverableApplicationInfo (System API)
            • remoteAbilityInfo (System API)
            • SharedBundleInfo (System API)
            • shortcutInfo (System API)
          • continuation
            • continuationExtraParams
            • continuationResult
          • security
            • PermissionRequestResult
          • wantAgent
            • triggerInfo
            • wantAgentInfo
            • TriggerInfo (System API)
        • APIs No Longer Maintained
          • @ohos.ability.dataUriUtils (DataUriUtils) (System API)
          • @ohos.ability.errorCode (ErrorCode)
          • @ohos.ability.wantConstant (wantConstant)
          • @ohos.application.appManager (appManager)
          • @ohos.application.Configuration (Configuration)
          • @ohos.application.ConfigurationConstant (ConfigurationConstant)
          • @ohos.application.Want (Want)
          • @ohos.wantAgent (WantAgent) (System API)
          • @ohos.ability.wantConstant (wantConstant) (System API)
          • @ohos.application.abilityManager (AbilityManager) (System API)
          • @ohos.application.appManager (appManager) (System API)
          • @ohos.application.missionManager (missionManager) (System API)
          • @ohos.wantAgent (WantAgent) (System API)
          • @ohos.bundle (Bundle)
          • @ohos.bundle (Bundle) (System API)
          • @ohos.bundle.innerBundleManager (innerBundleManager) (System API)
          • @ohos.distributedBundle (Distributed Bundle Management) (System API)
          • @system.package (Bundle Management)
          • bundle
            • abilityInfo
            • applicationInfo
            • bundleInfo
            • customizeData
            • elementName
            • hapModuleInfo
            • moduleInfo
            • shortcutInfo
            • bundleInstaller (System API)
            • bundleStatusCallback (System API)
            • launcherAbilityInfo (System API)
            • PermissionDef (System API)
            • remoteAbilityInfo (System API)
            • shortcutInfo (System API)
      • C APIs
        • Modules
          • AbilityAccessControl
          • AbilityRuntime
          • Bundle
          • ChildProcess
        • Header Files
          • ability_access_control.h
          • ability_runtime_common.h
          • application_context.h
          • context_constant.h
          • native_interface_bundle.h
          • native_child_process.h
        • Structs
          • OH_NativeBundle_ApplicationInfo
          • OH_NativeBundle_ElementName
      • Error Codes
        • Ability Error Codes
        • DistributedSchedule Error Codes
        • Bundle Error Codes
        • Access Control Error Codes
        • ohos.screenLockFileManager Error Codes
        • Application Domain Name Verification Error Codes
    • ArkData
      • ArkTS APIs
        • @ohos.data.commonType (Common Data Types)
        • @ohos.data.dataAbility (DataAbility Predicates)
        • @ohos.data.dataSharePredicates (DataShare Predicates)
        • @ohos.data.distributedDataObject (Distributed Data Object)
        • @ohos.data.distributedKVStore (Distributed KV Store)
        • @ohos.data.preferences (User Preferences)
        • @ohos.data.sendablePreferences (Sendable Preferences)
        • @ohos.data.relationalStore (RDB Store)
        • @ohos.data.sendableRelationalStore (Shared RDB Store)
        • @ohos.data.unifiedDataChannel (Unified Data Channel)
        • @ohos.data.uniformDataStruct (Uniform Data Structs)
        • @ohos.data.uniformTypeDescriptor (Standard Data Definition)
        • @ohos.data.ValuesBucket (Value Bucket)
        • @ohos.application.DataShareExtensionAbility (DataShare ExtensionAbility) (System API)
        • @ohos.data.cloudData (Device-Cloud Service)
        • @ohos.data.cloudData (Device-Cloud Service) (System API)
        • @ohos.data.cloudExtension (Device-Cloud Sharing Extension) (System API)
        • @ohos.data.dataShare (Data Sharing) (System API)
        • @ohos.data.dataSharePredicates (Data Share Predicates) (System API)
        • @ohos.data.dataShareResultSet (Data Share Result Set) (System API)
        • @ohos.data.distributedKVStore (Distributed KV Store) (System API)
        • @ohos.data.relationalStore (RDB Store) (System API)
        • APIs No Longer Maintained
          • @ohos.data.distributedData (Distributed Data Management)
          • @ohos.data.rdb (RDB)
          • @ohos.data.storage (Lightweight Data Storage)
          • @system.storage (Data Storage)
          • data/rdb
            • resultSet
      • C APIs
        • Modules
          • Data
          • RDB
          • UDMF
          • Preferences
        • Header Files
          • data_asset.h
          • oh_cursor.h
          • oh_predicates.h
          • oh_value_object.h
          • oh_values_bucket.h
          • relational_store_error_code.h
          • relational_store.h
          • udmf.h
          • udmf_err_code.h
          • udmf_meta.h
          • uds.h
          • utd.h
          • oh_preferences.h
          • oh_preferences_err_code.h
          • oh_preferences_option.h
          • oh_preferences_value.h
        • Structs
          • OH_Cursor
          • OH_Predicates
          • OH_Rdb_Config
          • OH_Rdb_Store
          • OH_VBucket
          • OH_VObject
          • Rdb_ChangeInfo
          • Rdb_DataObserver
          • Rdb_DistributedConfig
          • Rdb_KeyInfo
          • Rdb_KeyInfo::Rdb_KeyData
          • Rdb_ProgressDetails
          • Rdb_ProgressObserver
          • Rdb_Statistic
          • Rdb_SubscribeCallback
          • Rdb_TableDetails
      • Error Codes
        • RDB Error Codes
        • DataShare Error Codes
        • Distributed Data Object Error Codes
        • Distributed KV Store Error Codes
        • User Preference Error Codes
        • UDMF Error Codes
    • ArkTS
      • ArkTS APIs
        • @arkts.collections (ArkTS Collections)
        • @arkts.lang (ArkTS Base Capability)
        • @arkts.math.Decimal (High-Precision Math Library Decimal)
        • @arkts.utils (ArkTS Utils)
        • @ohos.buffer (Buffer)
        • @ohos.convertxml (XML-to-JavaScript Conversion)
        • @ohos.process (Obtaining Process Information)
        • @ohos.taskpool (Using the Task Pool)
        • @ohos.uri (URI String Parsing)
        • @ohos.url (URL String Parsing)
        • @ohos.util (util)
        • @ohos.util.ArrayList (Linear Container ArrayList)
        • @ohos.util.Deque (Linear Container Deque)
        • @ohos.util.HashMap (Nonlinear Container HashMap)
        • @ohos.util.HashSet (Nonlinear Container HashSet)
        • @ohos.util.json (JSON Parsing and Generation)
        • @ohos.util.LightWeightMap (Nonlinear Container LightWeightMap)
        • @ohos.util.LightWeightSet (Nonlinear Container LightWeightSet)
        • @ohos.util.LinkedList (Linear Container LinkedList)
        • @ohos.util.List (Linear Container List)
        • @ohos.util.PlainArray (Nonlinear Container PlainArray)
        • @ohos.util.Queue (Linear Container Queue)
        • @ohos.util.Stack (Linear Container Stack)
        • @ohos.util.stream (Stream Base Class)
        • @ohos.util.TreeMap (Nonlinear Container TreeMap)
        • @ohos.util.TreeSet (Nonlinear Container TreeSet)
        • @ohos.worker (Worker Startup)
        • @ohos.worker (Starting the Worker) (System API)
        • @ohos.xml (XML Parsing and Generation)
        • APIs No Longer Maintained
          • @ohos.util.Vector (Linear Container Vector)
      • Error Codes
        • Common Library Error Codes
    • ArkUI
      • ArkTS APIs
        • UI
          • @ohos.animator (Animator)
          • @ohos.arkui.componentSnapshot (Component Snapshot)
          • @ohos.arkui.componentUtils (componentUtils)
          • @ohos.arkui.dragController (DragController)
          • @ohos.arkui.drawableDescriptor (DrawableDescriptor)
          • @ohos.arkui.inspector (Layout Callback)
          • @ohos.arkui.node (Custom Node)
          • @ohos.arkui.observer (Observer)
          • @ohos.arkui.prefetcher (Prefetching)
          • @ohos.arkui.shape (Shape)
          • @ohos.arkui.Theme (Theme)
          • @ohos.arkui.UIContext (UIContext)
          • @ohos.arkui.uiExtension (uiExtension)
          • @ohos.arkui.StateManagement (State Management)
          • @ohos.curves (Interpolation Calculation)
          • @ohos.font (Custom Font Registration)
          • @ohos.matrix4 (Matrix Transformation)
          • @ohos.measure (Text Measurement)
          • @ohos.mediaquery (Media Query)
          • @ohos.pluginComponent (PluginComponentManager)
          • @ohos.promptAction (Prompt)
          • @ohos.router (Page Routing) (Not Recommended)
          • getContext
          • postCardAction
          • @ohos.arkui.drawableDescriptor (DrawableDescriptor) (System API)
          • @ohos.arkui.performanceMonitor (Performance Monitoring) (System API)
          • @ohos.arkui.uiExtension (uiExtension) (System API)
          • @ohos.deviceStatus.dragInteraction (Drag Interaction) (System API)
          • @ohos.pluginComponent (PluginComponentManager) (System API)
          • @ohos.uiAppearance (UI Appearance) (System API)
          • @ohos.uiExtensionHost (System API)
          • @ohos.arkui.UIContext (UIContext) (System API)
          • @ohos.promptAction (Prompt) (System API)
          • arkui
            • BuilderNode
            • ComponentContent
            • FrameNode
            • Graphics
            • NodeController
            • RenderNode
            • AttributeUpdater
            • Content
            • NodeContent
        • Graphics
          • @ohos.display (Display)
          • @ohos.PiPWindow (PiP Window)
          • @ohos.window (Window)
          • @ohos.screenshot (Screenshot)
          • @ohos.animation.windowAnimationManager (Window Animation Management) (System API)
          • @ohos.application.WindowExtensionAbility (WindowExtensionAbility) (System API)
          • @ohos.display (Display) (System API)
          • @ohos.screen (Screen) (System API)
          • @ohos.screenshot (Screenshot) (System API)
          • @ohos.window (Window) (System API)
          • WindowExtensionContext (System API)
        • APIs No Longer Maintained
          • @ohos.prompt (Prompt)
          • @system.app (Application Context)
          • @system.configuration (Application Configuration)
          • @system.mediaquery (Media Query)
          • @system.prompt (Prompt)
          • @system.router (Page Routing)
          • XComponentNode
      • ArkTS Components
        • Universal Components
          • Universal Events
            • Click Event
            • Touch Event
            • Show/Hide Event
            • Drag/Drop Event
            • Key Event
            • Focus Event
            • Mouse Event
            • Hover Event
            • Accessibility Hover Event
            • Component Area Change Event
            • Component Size Change Event
            • Visible Area Change Event
            • Custom Keyboard Shortcuts
            • Custom Event Dispatch
            • Custom Event Interception
          • Universal Attributes
            • Size
            • Location
            • Layout Constraints
            • Component-Level Pixel Rounding
            • Flex Layout
            • Border
            • Border Image
            • Background
            • Opacity
            • Visibility
            • Enable/Disable
            • Overlay
            • Z-order Control
            • Transformation
            • Image Effect Configuration
            • Shape Clipping
            • Gradient Color
            • Popup Control
            • Menu Control
            • Focus Control
            • Hover Effect
            • Component ID
            • Reuse ID
            • Polymorphic Style
            • restoreId
            • Foreground Color
            • Foreground Effect
            • Foreground Blur
            • Motion Blur
            • Click Effect
            • Accessibility
            • Attribute Modifier
            • Gesture Modifier
            • Outline
            • Visual Effect
            • Drawing Modifier
            • Content Modifier
            • Custom Property
            • Touch Interactions
              • Touch Target
              • Hit Test Control
            • Transition
              • Modal Transition
              • Sheet Transition
            • Obscuring
            • Universal Text Attributes
            • Drag and Drop Control
            • Safe Area
            • Render Fit
            • Event Monopolization
            • Cursor Control
            • Special Effect Drawing Combination
            • Point Light Style (System API)
            • Image Effects (System API)
          • Gesture Handling
            • Gesture Binding Methods
            • TapGesture
            • LongPressGesture
            • PanGesture
            • PinchGesture
            • RotationGesture
            • SwipeGesture
            • Combined Gestures
            • Custom Gesture Judgment
            • Bound Gesture Configuration
            • Gesture Blocking Enhancement
        • Rows, Columns, and Stacking
          • Flex
          • Column
          • Row
          • Stack
          • RelativeContainer
          • FolderStack
          • Flex (System API)
          • Column (System API)
          • Row (System API)
          • Stack (System API)
        • Grid and Column Layout
          • GridRow
          • GridCol
          • ColumnSplit
          • RowSplit
          • SplitLayout
          • FoldSplitContainer
          • SideBarContainer
        • Scroll and Swipe
          • List
          • ListItem
          • ListItemGroup
          • Grid
          • GridItem
          • Scroll
          • Swiper
          • WaterFlow
          • FlowItem
          • ScrollBar
          • Refresh
          • ComposeListItem
          • GridObjectSortComponent
          • SwipeRefresher
          • Scrollable Component Common APIs
          • List (System API)
        • Navigation and Switching
          • Navigation
          • NavDestination
          • MultiNavigation
          • Stepper
          • StepperItem
          • Tabs
          • TabContent
        • Buttons and Selections
          • Button
          • Toggle
          • Checkbox
          • CheckboxGroup
          • CalendarPicker
          • DatePicker
          • TextPicker
          • TimePicker
          • Radio
          • Rating
          • Select
          • Slider
          • DownloadFileButton
          • ProgressButton
          • SegmentButton
          • Filter
        • Text and Input
          • Text
          • TextArea
          • TextInput
          • RichEditor
          • Search
          • Span
          • ImageSpan
          • ContainerSpan
          • SymbolSpan
          • SymbolGlyph
          • Hyperlink
          • RichText
          • SelectionMenu
          • Styled String
          • Text Component Common APIs
          • TextInput (System API)
          • Styled String (System API)
        • Images and Videos
          • Image
          • ImageAnimator
          • Video
          • Image Analysis Types
          • Image (System API)
          • MediaCachedImage (System API)
        • Information Display
          • AlphabetIndexer
          • Badge
          • Chip
          • ChipGroup
          • Counter
          • advanced.Counter
          • DataPanel
          • ExceptionPrompt
          • Gauge
          • LoadingProgress
          • Marquee
          • PatternLock
          • Progress
          • Popup
          • QRCode
          • TextClock
          • TextTimer
          • TreeView
        • Blank and Divider
          • Blank
          • Divider
        • Canvas Drawing
          • Canvas
          • CanvasGradient
          • CanvasPattern
          • CanvasRenderingContext2D
          • DrawingRenderingContext
          • ImageBitmap
          • ImageData
          • Matrix2D
          • OffscreenCanvas
          • OffscreenCanvasRenderingContext2D
          • Path2D
        • Graphic Drawing
          • Circle
          • Ellipse
          • Line
          • Polyline
          • Polygon
          • Path
          • Rect
          • Shape
        • Rendering Drawing
          • XComponent
          • Component3D
          • EmbeddedComponent
        • Title Bars and Toolbars
          • ComposeTitleBar
          • EditableTitleBar
          • SelectTitleBar
          • TabTitleBar
          • ToolBar
          • SubHeader
        • Menus
          • Menu
          • MenuItem
          • MenuItemGroup
          • ContextMenu
        • Animation
          • Property Animation (animation)
          • Explicit Animation (animateTo)
          • Keyframe Animation (keyframeAnimateTo)
          • Page Transition
          • Component Transition (transition)
          • Shared Element Transition (sharedTransition)
          • Implicit Shared Element Transition (geometryTransition)
          • Motion Path Animation (motionPath)
          • Particle Animation (Particle)
          • Immediate Delivery of Explicit Animation (animateToImmediately)
          • Implicit Shared Element Transition (geometryTransition) (System API)
        • Dialog Boxes
          • Alert Dialog Box (AlertDialog)
          • Action Sheet (ActionSheet)
          • Custom Dialog Box (CustomDialog)
          • Calendar Picker Dialog Box (CalendarPickerDialog)
          • Date Picker Dialog Box (DatePickerDialog)
          • Time Picker Dialog Box (TimePickerDialog)
          • Text Picker Dialog Box (TextPickerDialog)
          • Dialog
        • Service Widgets
          • FormLink
          • FormMenu
          • FormComponent (System API)
        • Security
          • Security Component Universal Attributes
          • LocationButton
          • PasteButton
          • SaveButton
          • SaveButton (System API)
        • Themes
          • WithTheme
        • Atomic Services
          • AtomicServiceNavigation
          • AtomicServiceTabs
          • AtomicServiceWeb
          • InterstitialDialogAction
          • FullScreenLaunchComponent
          • InnerFullScreenLaunchComponent (System API)
          • NavPushPathHelper
        • Custom Placeholder Components
          • NodeContainer
          • ContentSlot
        • Custom Components
          • Custom Component Lifecycle
          • Custom Component Layout
          • Custom Component Built-in APIs
        • State Management and Rendering Control
          • State Management with Application-level Variables
          • ForEach
          • LazyForEach
          • Repeat
          • State Management with Application-level Variables (System API)
        • Common Definitions
          • Basic Types
          • Pixel Units
          • Enums
          • Common Event Callback
          • SVG Tags
          • Enums (System API)
        • Other
          • EffectComponent (System API)
          • IsolatedComponent (System API)
          • RemoteWindow (System API)
          • PluginComponent (System API)
          • UIExtensionComponent (System API)
        • Components and APIs No Longer Maintained
          • AbilityComponent
          • GridContainer
          • Panel
          • NavRouter
          • Navigator
          • Click Control
          • Grid
      • JavaScript Components
        • JavaScript-compatible Web-like Development Paradigm (ArkUI.Full)
          • Universal Components
            • Universal Attributes
            • Universal Styles
            • Universal Events
            • Universal Methods
            • Animation Styles
            • Gradient Styles
            • Transition Styles
            • Media Query
            • Custom Font Styles
            • Atomic Layout
          • Container Components
            • badge
            • dialog
            • div
            • form
            • list
            • list-item
            • list-item-group
            • panel
            • popup
            • refresh
            • stack
            • stepper
            • stepper-item
            • swiper
            • tabs
            • tab-bar
            • tab-content
          • Basic Components
            • button
            • chart
            • divider
            • image
            • image-animator
            • input
            • label
            • marquee
            • menu
            • option
            • picker
            • picker-view
            • piece
            • progress
            • qrcode
            • rating
            • richtext
            • search
            • select
            • slider
            • span
            • switch
            • text
            • textarea
            • toolbar
            • toolbar-item
            • toggle
            • web
            • xcomponent
          • Media Components
            • video
          • Canvas Components
            • canvas
            • CanvasRenderingContext2D
            • Image
            • CanvasGradient
            • ImageData
            • Path2D
            • ImageBitmap
            • OffscreenCanvas
            • OffscreenCanvasRenderingContext2D
          • Grid Components
            • Basic Concepts
            • grid-container
            • grid-row
            • grid-col
          • SVG Components
            • Universal Attributes
            • svg
            • rect
            • circle
            • ellipse
            • path
            • line
            • polyline
            • polygon
            • text
            • tspan
            • textPath
            • animate
            • animateMotion
            • animateTransform
          • Custom Components
            • Basic Usage
            • props
            • Style Inheritance
            • slot
            • Lifecycle Definition
          • Dynamic Component Creation
          • Data Type Attributes
        • JavaScript-compatible Web-like Development Paradigm (ArkUI.Lite)
          • Framework Overview
            • File Organization
            • "js" Tag
            • app.js
            • Lifecycle
            • Multi-Language Capability
            • Syntax
              • HML
              • CSS
              • JavaScript
          • Universal Components
            • Universal Events
            • Universal Attributes
            • Universal Styles
            • Animation Styles
            • Media Query
          • Container Components
            • div
            • list
            • list-item
            • stack
            • swiper
          • Basic Components
            • chart
            • image
            • image-animator
            • input
            • marquee
            • picker-view
            • progress
            • qrcode
            • slider
            • switch
            • text
          • Canvas Components
            • canvas
            • CanvasRenderingContext2D
        • JavaScript Service Widget UI Components
          • Framework Overview
            • File Organization
            • Syntax
              • HML
              • CSS
            • Multi-Language Capability
            • Version Compatibility Adaptation
            • Theme Configuration
          • Universal Components
            • Universal Attributes
            • Universal Styles
            • Universal Events
            • Gradient Styles
            • Media Query
            • Custom Font Styles
            • Accessibility
            • Atomic Layout
          • Container Components
            • badge
            • div
            • list
            • list-item
            • stack
            • swiper
          • Basic Components
            • button
            • calendar
            • chart
            • clock
            • divider
            • image
            • input
            • progress
            • span
            • text
          • Custom Component Basic Usage
          • Data Types
      • C APIs
        • Modules
          • ArkUI_NativeModule
          • Native Accessibility
          • Native XComponent
          • ArkUI_EventModule
          • WindowManager_NativeModule
          • OH_DisplayManager
        • Header Files and Structs
          • Header Files
            • drag_and_drop.h
            • drawable_descriptor.h
            • native_animate.h
            • native_dialog.h
            • native_gesture.h
            • native_interface.h
            • native_interface_accessibility.h
            • native_interface_xcomponent.h
            • native_key_event.h
            • native_node.h
            • native_node_napi.h
            • native_type.h
            • native_xcomponent_key_event.h
            • styled_string.h
            • ui_input_event.h
            • oh_window_comm.h
            • oh_window_event_filter.h
            • oh_display_capture.h
            • oh_display_info.h
            • oh_display_manager.h
          • Structs
            • ArkUI_AnimateCompleteCallback
            • ArkUI_AttributeItem
            • ArkUI_ColorStop
            • ArkUI_ContextCallback
            • ArkUI_ExpectedFrameRateRange
            • ArkUI_IntOffset
            • ArkUI_IntSize
            • ArkUI_Margin
            • ArkUI_NativeAnimateAPI_1
            • ArkUI_NativeDialogAPI_1
            • ArkUI_NativeGestureAPI_1
            • ArkUI_NativeNodeAPI_1
            • ArkUI_NodeComponentEvent
            • ArkUI_NumberValue
            • ArkUI_Rect
            • ArkUI_RotationOptions
            • ArkUI_ScaleOptions
            • ArkUI_StringAsyncEvent
            • ARKUI_TextPickerCascadeRangeContent
            • ARKUI_TextPickerRangeContent
            • ArkUI_TranslationOptions
            • OH_NativeXComponent_Callback
            • OH_NativeXComponent_ExpectedRateRange
            • OH_NativeXComponent_MouseEvent
            • OH_NativeXComponent_MouseEvent_Callback
            • OH_NativeXComponent_TouchEvent
            • OH_NativeXComponent_TouchPoint
            • NativeDisplayManager_CutoutInfo
            • NativeDisplayManager_DisplayColorSpace
            • NativeDisplayManager_DisplayHdrFormat
            • NativeDisplayManager_DisplayInfo
            • NativeDisplayManager_DisplaysInfo
            • NativeDisplayManager_Rect
            • NativeDisplayManager_WaterfallDisplayAreaRects
      • Error Codes
        • UI
          • Animator Error Codes
          • promptAction Error Codes
          • Router Error Codes
          • UI Appearance Error Codes
          • Drag Event Error Codes
          • AI Image Analyzer Error Codes
          • Focus Error Codes
          • System Resource Error Codes
          • Sheet Error Codes
          • Scrollable Component Error Codes
        • Graphics
          • Display Error Codes
          • Window Error Codes
    • ArkWeb
      • ArkTS APIs
        • @ohos.web.webview (Webview)
        • @ohos.web.netErrorList
      • ArkTS Components
        • Web
      • C APIs
        • Modules
          • Web
          • Header Files
            • arkweb_error_code.h
            • arkweb_interface.h
            • arkweb_net_error_list.h
            • arkweb_scheme_handler.h
            • arkweb_type.h
            • native_interface_arkweb.h
          • Structs
            • ArkWeb_AnyNativeAPI
            • ArkWeb_ComponentAPI
            • ArkWeb_ControllerAPI
            • ArkWeb_CookieManagerAPI
            • ArkWeb_JavaScriptBridgeData
            • ArkWeb_JavaScriptObject
            • ArkWeb_ProxyMethod
            • ArkWeb_ProxyObject
            • ArkWeb_WebMessageAPI
            • ArkWeb_WebMessagePortAPI
      • Error Codes
        • Webview Error Codes
    • Background Tasks Kit
      • ArkTS APIs
        • @ohos.reminderAgentManager (Agent-Powered Reminders)
        • @ohos.resourceschedule.backgroundTaskManager (Background Task Management)
        • @ohos.resourceschedule.workScheduler (Deferred Task Scheduling)
        • @ohos.WorkSchedulerExtensionAbility (Deferred Task Scheduling Callbacks)
        • @ohos.reminderAgentManager (Agent-Powered Reminders) (System API)
        • @ohos.resourceschedule.backgroundTaskManager (Background Task Management) (System API)
        • @ohos.resourceschedule.deviceStandby (Device Standby) (System API)
        • @ohos.resourceschedule.usageStatistics (Device Usage Statistics) (System API)
        • application
          • WorkSchedulerExtensionContext
          • WorkSchedulerExtensionContext (System API)
        • APIs No Longer Maintained
          • @ohos.backgroundTaskManager (Background Task Management)
          • @ohos.bundleState (Device Usage Statistics)
          • @ohos.reminderAgent (reminderAgent)
          • @ohos.backgroundTaskManager (Background Task Management) (System API)
          • @ohos.bundleState (Device Usage Statistics) (System API)
      • C APIs
        • Modules
          • TransientTask
        • Header Files
          • transient_task_api.h
          • transient_task_type.h
        • Structs
          • TransientTask_DelaySuspendInfo
      • Error Codes
        • BackgroundTaskManager Error Codes
        • DeviceUsageStatistics Error Codes
        • reminderAgentManager Error Codes
        • workScheduler Error Codes
    • Core File Kit
      • ArkTS APIs
        • @ohos.application.BackupExtensionAbility (BackupExtensionAbility)
        • @ohos.file.cloudSync (Device-Cloud Synchronization)
        • @ohos.file.environment (Directory Environment Capability)
        • @ohos.file.fileuri (File URI)
        • @ohos.file.fs (File Management)
        • @ohos.file.hash (File Hash Processing)
        • @ohos.file.picker (Picker)
        • @ohos.file.securityLabel (Data Label)
        • @ohos.file.statvfs (File System Space Statistics)
        • @ohos.file.storageStatistics (Application Storage Statistics)
        • @ohos.fileshare (File Sharing)
        • @ohos.file.BackupExtensionContext (Backup and Restore Extension Capability)
        • @ohos.application.BackupExtensionAbility (Backup and Restore Extension Capability) (System API)
        • @ohos.file.backup (Backup and Restore) (System API)
        • @ohos.file.cloudSync (Device-Cloud Synchronization) (System API)
        • @ohos.file.cloudSyncManager (Device-Cloud Synchronization Management) (System API)
        • @ohos.file.environment (Directory Environment Capability) (System API)
        • @ohos.file.fileAccess (User File Access and Management) (System API)
        • @ohos.file.fileExtensionInfo (User File Extension Information) (System API)
        • @ohos.file.recent (Latest Access List) (System API)
        • @ohos.file.storageStatistics (Application Space Statistics) (System API)
        • @ohos.file.trash (Trash) (System API)
        • @ohos.file.volumeManager (Volume Management) (System API)
        • @ohos.filemanagement.userFileManager (User Data Management) (System API)
        • @ohos.fileshare (File Sharing) (System API)
        • APIs No Longer Maintained
          • @ohos.document (File Operation)
          • @ohos.fileio (File Management)
          • @ohos.statfs (statfs)
          • @system.file (File Storage)
      • C APIs
        • Modules
          • Environment
          • FileIO
          • FileShare
          • Fileuri
        • Header Files
          • error_code.h
          • oh_environment.h
          • oh_file_share.h
          • oh_file_uri.h
          • oh_fileio.h
        • Structs
          • FileShare_PolicyErrorResult
          • FileShare_PolicyInfo
      • Error Codes
        • File Management Error Codes
    • Form Kit
      • ArkTS APIs
        • @ohos.app.form.formBindingData (formBindingData)
        • @ohos.app.form.FormExtensionAbility (FormExtensionAbility)
        • @ohos.app.form.formInfo (FormInfo)
        • @ohos.app.form.formProvider (FormProvider)
        • @ohos.app.form.formAgent (FormAgent) (System API)
        • @ohos.app.form.FormExtensionAbility (FormExtensionAbility) (System API)
        • @ohos.app.form.formInfo (FormInfo) (System API)
        • @ohos.app.form.formHost (formHost) (System API)
        • @ohos.app.form.formProvider (FormProvider) (System API)
        • @ohos.app.form.formObserver (formObserver) (System API)
        • application
          • FormExtensionContext
          • FormExtensionContext (System API)
      • APIs No Longer Maintained
        • @ohos.application.formBindingData (formBindingData)
        • @ohos.application.formError (FormError)
        • @ohos.application.formInfo (FormInfo)
        • @ohos.application.formProvider (FormProvider)
        • @ohos.application.formError (FormError) (System API)
        • @ohos.application.formHost (FormHost) (System API)
        • @ohos.application.formInfo (FormInfo) (System API)
      • Error Codes
        • Form Error Codes
    • IME Kit
      • ArkTS APIs
        • @ohos.InputMethodExtensionAbility (InputMethodExtensionAbility)
        • @ohos.InputMethodExtensionContext (InputMethodExtensionContext)
        • @ohos.inputMethod.Panel (Input Method Panel)
        • @ohos.InputMethodSubtype (Input Method Subtype)
        • @ohos.inputMethod (Input Method Framework) (System API)
        • @ohos.inputMethod (Input Method Framework)
        • @ohos.inputMethodEngine (Input Method Service)
        • @ohos.inputMethodList (Input Method List)
      • C APIs
        • Modules
          • InputMethod
        • Header Files
          • inputmethod_attach_options_capi.h
          • inputmethod_controller_capi.h
          • inputmethod_cursor_info_capi.h
          • inputmethod_inputmethod_proxy_capi.h
          • inputmethod_private_command_capi.h
          • inputmethod_text_avoid_info_capi.h
          • inputmethod_text_config_capi.h
          • inputmethod_text_editor_proxy_capi.h
          • inputmethod_types_capi.h
      • Error Codes
        • Input Method Framework Error Codes
    • IPC Kit
      • ArkTS APIs
        • @ohos.rpc (RPC)
      • C APIs
        • Modules
          • OHIPCParcel
          • OHIPCRemoteObject
          • OHIPCSkeleton
          • OHIPCErrorCode
          • IPCKit
        • Header Files and Structs
          • Header Files
            • ipc_cparcel.h
            • ipc_cremote_object.h
            • ipc_cskeleton.h
            • ipc_error_code.h
            • ipc_kit.h
          • Structs
            • OH_IPC_MessageOption
      • Error Codes
        • RPC Error Codes
    • Localization Kit
      • ArkTS APIs
        • @ohos.i18n (Internationalization)
        • @ohos.intl (Internationalization)
        • @ohos.resourceManager (Resource Manager)
        • @ohos.sendableResourceManager (Resource Manager)
        • @ohos.i18n (Internationalization) (System API)
        • global
          • RawFileDescriptor
          • Resource
          • SendableResource
      • C APIs
        • Modules
          • Rawfile
          • Resourcemanager
        • Header Files
          • raw_dir.h
          • raw_file_manager.h
          • raw_file.h
          • ohresmgr.h
          • resmgr_common.h
        • Structs
          • RawFileDescriptor
          • RawFileDescriptor64
          • ResourceManager_Configuration
      • Error Codes
        • I18n Error Codes
        • Resource Manager Error Codes

  • System

    • Security

      • Asset Store Kit
        • ArkTS APIs
          • @ohos.security.asset (Asset Store Service)
          • @ohos.security.asset (Asset Store Service) (System API)
        • C APIs
          • Modules
            • AssetApi
            • AssetType
          • Header Files
            • asset_api.h
            • asset_type.h
          • Structs
            • Asset_Attr
            • Asset_Blob
            • Asset_Result
            • Asset_ResultSet
            • Asset_Value
        • Error Codes
          • Asset Store Service Error Code
      • Crypto Architecture Kit
        • ArkTS APIs
          • @ohos.security.cryptoFramework (Crypto Framework)
          • APIs No Longer Maintained
            • @system.cipher (Cipher Algorithm)
        • C APIs
          • Modules
            • CryptoAsymKeyApi
            • CryptoCommonApi
            • CryptoDigestApi
            • CryptoSignatureApi
            • CryptoSymCipherApi
            • CryptoSymKeyApi
          • Header Files
            • crypto_asym_key.h
            • crypto_common.h
            • crypto_digest.h
            • crypto_signature.h
            • crypto_sym_cipher.h
            • crypto_sym_key.h
          • Structs
            • Crypto_DataBlob
        • Error Codes
          • Crypto Framework Error Codes
      • Data Protection Kit
        • ArkTS APIs
          • @ohos.dlpPermission (DLP)
          • @ohos.dlpPermission (DLP) (System API)
        • C APIs
          • Modules
            • DlpPermissionApi
          • Header Files
            • dlp_permission_api.h
        • Error Codes
          • DLP Service Error Codes
      • Device Certificate Kit
        • ArkTS APIs
          • @ohos.security.cert (Certificate)
          • @ohos.security.certManager (Certificate Management)
          • @ohos.security.certManagerDialog (Certificate Management Dialog Box)
          • @ohos.security.certManager (Certificate Management) (System API)
        • Error Codes
          • Certificate Error Codes
          • Certificate Management Error Codes
          • Certificate Management Dialog Box Error Codes
      • Universal Keystore Kit
        • ArkTS APIs
          • @ohos.security.huks (HUKS)
          • @ohos.security.huks (HUKS) (System API)
        • C APIs
          • Modules
            • HuksKeyApi
            • HuksParamSetApi
            • HuksTypeApi
          • Header Files
            • native_huks_api.h
            • native_huks_param.h
            • native_huks_type.h
          • Structs
            • OH_Huks_Blob
            • OH_Huks_CertChain
            • OH_Huks_KeyAliasSet
            • OH_Huks_KeyInfo
            • OH_Huks_KeyMaterial25519
            • OH_Huks_KeyMaterialDh
            • OH_Huks_KeyMaterialDsa
            • OH_Huks_KeyMaterialEcc
            • OH_Huks_KeyMaterialRsa
            • OH_Huks_Param
            • OH_Huks_ParamSet
            • OH_Huks_PubKeyInfo
            • OH_Huks_Result
        • Error Codes
          • HUKS Error Codes
      • User Authentication Kit
        • ArkTS APIs
          • @ohos.userIAM.userAuth (User Authentication)
          • @ohos.userIAM.faceAuth (Facial Authentication) (System API)
          • @ohos.userIAM.userAuth (User Authentication) (System API)
        • ArkTS Components
          • @ohos.userIAM.userAuthIcon (Embedded User Authentication Icons)
        • Error Codes
          • User Authentication Error Codes

    • Network

      • Connectivity Kit

        • ArkTS APIs
          • @ohos.bluetooth.a2dp (Bluetooth A2DP Module) (Recommended)
          • @ohos.bluetooth.access (Bluetooth Access Module) (Recommended)
          • @ohos.bluetooth.baseProfile (Bluetooth baseProfile Module) (Recommended)
          • @ohos.bluetooth.ble (Bluetooth BLE Module) (Recommended)
          • @ohos.bluetooth.connection (Bluetooth Connection Module) (Recommended)
          • @ohos.bluetooth.constant (Bluetooth Constant Module) (Recommended)
          • @ohos.bluetooth.hfp (Bluetooth HFP Module) (Recommended)
          • @ohos.bluetooth.hid (Bluetooth HID Module) (Recommended)
          • @ohos.bluetooth.pan (Bluetooth PAN Module) (Recommended)
          • @ohos.bluetooth.socket (Bluetooth Socket Module) (Recommended)
          • @ohos.bluetooth.pbap (Bluetooth PBAP Module) (Recommended)
          • @ohos.bluetooth.map (Bluetooth MAP Module) (Recommended)
          • @ohos.connectedTag (Active Tags)
          • @ohos.nfc.cardEmulation (Standard NFC Card Emulation)
          • @ohos.nfc.controller (Standard NFC)
          • @ohos.nfc.tag (Standard NFC Tags)
          • @ohos.secureElement (SE Management)
          • @ohos.wifiManager (WLAN) (Recommended)
          • @ohos.wifiManagerExt (WLAN Extension) (Recommended)
          • @ohos.bluetooth.a2dp (Bluetooth A2DP Module) (Recommended) (System API)
          • @ohos.bluetooth.access (Bluetooth Access Module) (Recommended) (System API)
          • @ohos.bluetooth.baseProfile (Bluetooth baseProfile Module) (Recommended) (System API)
          • @ohos.bluetooth.connection (Bluetooth Connection module) (Recommended) (System API)
          • @ohos.bluetooth.constant (Bluetooth Constant Module) (Recommended) (System API)
          • @ohos.bluetooth.hfp (Bluetooth HFP Module) (Recommended) (System API)
          • @ohos.bluetooth.hid (Bluetooth HID Module) (Recommended) (System API)
          • @ohos.bluetooth.pan (Bluetooth PAN Module) (Recommended) (System API)
          • @ohos.bluetooth.pbap (Bluetooth PBAP Module) (Recommended) (System API)
          • @ohos.bluetooth.map (Bluetooth MAP module) (Recommended) (System API)
          • @ohos.bluetooth.wearDetection (Bluetooth Wear Detection module) (Recommended) (System API)
          • @ohos.bluetoothManager (Bluetooth) (To Be Deprecated) (System API)
          • @ohos.nfc.cardEmulation (Standard NFC Card Emulation) (System API)
          • @ohos.nfc.tag (Standard NFC Tags) (System API)
          • @ohos.wifiManager (WLAN) (Recommended) (System API)
          • tag
            • nfctech (Standard NFC Technologies)
            • tagSession (Standard NFC Tag Session)
        • C APIs
          • Modules
            • Bluetooth
            • Wifi
          • Header Files
            • oh_bluetooth.h
            • oh_wifi.h
        • Error Codes
          • Bluetooth Error Codes
          • Wi-Fi Error Codes
          • NFC Error Codes
          • SE Error Codes
        • APIs No Longer Maintained
          • @ohos.bluetooth (Bluetooth) (To Be Deprecated)
          • @ohos.bluetoothManager (Bluetooth) (To Be Deprecated)
          • @ohos.wifi (WLAN) (To Be Deprecated)
          • @ohos.wifiext (WLAN Extension) (To Be Deprecated)
          • @system.bluetooth (Bluetooth)
          • @ohos.bluetooth (Bluetooth) (To Be Deprecated) (System API)
          • @ohos.wifi (WLAN) (To Be Deprecated) (System API)

      • Distributed Service Kit

        • ArkTS APIs
          • @ohos.distributedDeviceManager (Device Management)
          • @ohos.distributedHardware.hardwareManager (Distributed Hardware Management) (System API)
          • @ohos.distributedDeviceManager (Device Management) (System API)
          • @ohos.cooperate (Screen Hopping) (System API)
          • APIs No Longer Maintained
            • @ohos.distributedHardware.deviceManager (Device Management) (System API) (To be Deleted)
        • Error Codes
          • Device Management Error Codes
          • Screen Hopping Error Codes

      • Network Kit

        • ArkTS APIs
          • @ohos.net.connection (Network Connection Management)
          • @ohos.net.ethernet (Ethernet Connection Management)
          • @ohos.net.http (Data Request)
          • @ohos.net.mdns (mDNS Management)
          • @ohos.net.policy (Network Policy Management)
          • @ohos.net.socket (Socket Connection)
          • @ohos.net.statistics (Traffic Management)
          • @ohos.net.sharing (Network Sharing)
          • @ohos.net.vpnExtension (Enhanced VPN Management)
          • @ohos.net.vpn (VPN Management)
          • @ohos.net.webSocket (WebSocket Connection)
          • @ohos.net.networkSecurity (Network Security)
          • @ohos.app.ability.VpnExtensionAbility (VPN ExtensionAbility)
          • VpnExtensionContext
          • @ohos.net.connection (Network Connection Management) (System API)
          • @ohos.net.ethernet (Ethernet Connection Management) (System API)
          • @ohos.net.policy (Network Policy Management) (System API)
          • @ohos.net.sharing (Network Sharing Management) (System API)
          • @ohos.net.statistics (Traffic Management) (System API)
          • @ohos.net.vpn (VPN Management) (System API)
          • @ohos.net.vpnExtension (Enhanced VPN Management) (System API)
          • @ohos.net.netFirewall (Network Firewall) (System API)
        • C APIs
          • Modules
            • Netstack
            • NetConnection
          • Header Files
            • net_connection.h
            • net_connection_type.h
            • net_ssl_c.h
            • net_ssl_c_type.h
            • net_websocket.h
            • net_websocket_type.h
          • Structs
            • NetConn_ConnectionProperties
            • NetConn_HttpProxy
            • NetConn_NetAddr
            • NetConn_NetCapabilities
            • NetConn_NetHandle
            • NetConn_NetHandleList
            • NetConn_Route
            • NetConn_NetConnCallback
            • NetConn_NetSpecifier
            • NetStack_CertBlob
            • NetStack_CertificatePinning
            • NetStack_Certificates
            • WebSocket
            • WebSocket_CloseOption
            • WebSocket_CloseResult
            • WebSocket_ErrorResult
            • WebSocket_Header
            • WebSocket_OpenResult
            • WebSocket_RequestOptions
        • APIs No Longer Maintained
          • @system.network (Network State)
          • @system.fetch (Data Request)
        • Error Codes
          • HTTP Error Codes
          • Socket Error Codes
          • WebSocket Error Codes
          • Network Connection Management Error Codes
          • Ethernet Connection Error Codes
          • Network Sharing Error Codes
          • Policy Management Error Codes
          • MDNS Error Codes
          • Traffic Management Error Codes
          • VPN Error Codes
          • Network Security Error Codes

      • Telephony Kit

        • ArkTS APIs
          • @ohos.telephony.call (Call)
          • @ohos.telephony.data (Cellular Data)
          • @ohos.telephony.observer (Observer)
          • @ohos.telephony.radio (Radio)
          • @ohos.telephony.sim (SIM Management)
          • @ohos.telephony.sms (SMS)
          • @ohos.telephony.call (Call) (System API)
          • @ohos.telephony.data (Cellular Data) (System API)
          • @ohos.telephony.observer (Observer) (System API)
          • @ohos.telephony.radio (Radio) (System API)
          • @ohos.telephony.sim (SIM Management) (System API)
          • @ohos.telephony.sms (SMS) (System API)
          • @ohos.telephony.vcard (VCard) (System API)
        • C APIs
          • Modules
            • Telephony Data
            • Telephony Radio
          • Header Files
            • telephony_data.h
            • telephony_radio.h
            • telephony_radio_type.h
          • Structs
            • Telephony_NetworkState
        • Error Codes
          • Telephony Error Codes

    • Basic Functions

      • Basic Service Kit
        • ArkTS APIs
          • Account Management
            • @ohos.account.appAccount (App Account Management)
            • @ohos.account.distributedAccount (Distributed Account Management)
            • @ohos.account.osAccount (System Account Management)
            • @ohos.account.distributedAccount (Distributed Account Management) (System API)
            • @ohos.account.osAccount (System Account) (System API)
          • Device Management
            • @ohos.batteryInfo (Battery Information)
            • @ohos.deviceInfo (Device Information)
            • @ohos.power (System Power Management)
            • @ohos.runningLock (Running Lock)
            • @ohos.thermal (Thermal Management)
            • @ohos.usbManager (USB Manager)
            • @ohos.batteryInfo (Battery Information) (System API)
            • @ohos.batteryStatistics (Power Consumption Statistics) (System API)
            • @ohos.brightness (Screen Brightness) (System API)
            • @ohos.charger (Charger) (System API)
            • @ohos.deviceAttest (Device Attestation) (System API)
            • @ohos.power (Power Management) (System API)
            • @ohos.systemCapability (SystemCapability) (System API)
            • @ohos.systemParameterEnhance (System Parameter) (System API)
            • @ohos.screenLock (Screen Lock) (System API)
            • @ohos.usbManager (USB Management) (System API)
            • @ohos.update (Update) (System API)
          • Data File Processing
            • @ohos.app.ability.PrintExtensionAbility (Print Extension Ability)
            • @ohos.pasteboard (Pasteboard)
            • @ohos.print (Print)
            • @ohos.request (Upload and Download)
            • @ohos.zlib (Zip)
            • @ohos.app.ability.PrintExtensionAbility (Print Extension Ability) (System API)
            • @ohos.print (Print) (System API)
            • @ohos.request (Upload and Download) (System API)
          • Process and Thread Communication
            • System Common Events
            • System Common Events (System API)
            • @ohos.commonEventManager (Common Event)
            • @ohos.events.emitter (Emitter)
            • @ohos.commonEventManager (Common Event) (System API)
            • @ohos.application.StaticSubscriberExtensionAbility (StaticSubscriberExtensionAbility) (System API)
            • @ohos.application.StaticSubscriberExtensionContext (StaticSubscriberExtensionContext) (System API)
            • commonEvent
              • CommonEventData
              • CommonEventPublishData
              • CommonEventSubscriber
              • CommonEventSubscribeInfo
          • Other
            • @ohos.ai.intelligentVoice (Intelligent Voice) (System API)
            • @ohos.base (Public Callback Information)
            • @ohos.customization.customConfig (Custom Configurations)
            • @ohos.settings (Data Item Settings)
            • @ohos.wallpaper (Wallpaper)
            • @ohos.resourceschedule.systemload (System Load Level Management)
            • @ohos.configPolicy (Configuration Policy) (System API)
            • @ohos.settings (Data Item Settings) (System API)
            • @ohos.systemDateTime (System Time and Time Zone) (System API)
            • @ohos.systemDateTime
            • @ohos.wallpaper (Wallpaper) (System API)
            • @ohos.WallpaperExtensionAbility (WallpaperExtensionAbility) (System API)
            • @ohos.systemTimer (System Timer) (System API)
          • APIs No Longer Maintained
            • System Common Events
            • @ohos.commonEvent (Common Event)
            • @ohos.usb (USB)
            • @system.brightness (Screen Brightness)
            • @system.battery (Battery Information)
            • @system.device (Device Information)
            • @system.request (Upload and Download)
            • @ohos.screenLock (Screen Lock)
            • @ohos.commonEvent (Common Event) (System API)
            • @ohos.usb (USB) (System API)
            • @ohos.systemParameter (System Parameter) (System API)
            • @ohos.systemTime (System Time and Time Zone)
        • C APIs
          • Modules
            • CommonEvent
            • DeviceInfo
            • InitSync
            • OsAccount
            • OH_BatteryInfo
            • OH_Scan
            • OH_Print
            • Pasteboard
            • TimeService
          • Header Files
            • deviceinfo.h
            • init_sync.h
            • ohbattery_info.h
            • oh_commonevent.h
            • oh_commonevnt_support.h
            • oh_pasteboard.h
            • oh_pasteboard_err_code.h
            • os_account.h
            • os_account_common.h
            • ohprint.h
            • time_service.h
          • Structs
            • Print_Margin
            • Print_PageSize
            • Print_PrintAttributes
            • Print_PrintDocCallback
            • Print_Range
        • Error Codes
          • USB Error Codes
          • RunningLock Error Codes
          • zlib Error Codes
          • Battery Info Error Codes
          • Power Consumption Statistics Error Codes
          • Pasteboard Error Codes
          • Brightness Error Codes
          • Thermal Manager Error Codes
          • Upload and Download Error Codes
          • Time and Time Zone Error Codes
          • Event Error Codes
          • System Parameter Error Codes
          • Power Manager Error Codes
          • Account Management Error Codes
          • Update Error Codes
          • Print Error Codes
          • Screen Lock Management Error Codes
          • Device Attestation Error Codes
          • Intelligent Voice Error Codes
      • Function Flow Runtime Kit
        • C APIs
          • Modules
            • FFRT
          • Header Files and Structs
            • Header Files
              • condition_variable.h
              • loop.h
              • mutex.h
              • queue.h
              • sleep.h
              • task.h
              • timer.h
              • type_def.h
            • Structs
              • ffrt_cond_t
              • ffrt_condattr_t
              • ffrt_dependence_t
              • ffrt_deps_t
              • ffrt_function_header_t
              • ffrt_mutex_t
              • ffrt_mutexattr_t
              • ffrt_queue_attr_t
              • ffrt_task_attr_t
      • Input Kit
        • ArkTS APIs
          • @ohos.multimodalInput.inputDevice (Input Device)
          • @ohos.multimodalInput.inputEvent (Input Event)
          • @ohos.multimodalInput.intentionCode (Intention Code)
          • @ohos.multimodalInput.keyCode (Key Code)
          • @ohos.multimodalInput.keyEvent (Key Event)
          • @ohos.multimodalInput.mouseEvent (Mouse Event)
          • @ohos.multimodalInput.gestureEvent (Gesture Input Event)
          • @ohos.multimodalInput.pointer (Mouse Pointer)
          • @ohos.multimodalInput.touchEvent (Touch Event)
          • @ohos.multimodalInput.inputConsumer (Input Consumer)
          • @ohos.multimodalInput.pointer (Mouse Pointer) (System API)
          • @ohos.multimodalInput.shortKey (Shortcut Key) (System API)
          • @ohos.multimodalInput.infraredEmitter (IR Management) (System API)
          • @ohos.multimodalInput.inputConsumer (Input Consumer) (System API)
          • @ohos.multimodalInput.inputDevice (Input Device) (System API)
          • @ohos.multimodalInput.inputEventClient (Input Event Injection) (System API)
          • @ohos.multimodalInput.inputMonitor (Input Monitor) (System API)
          • @ohos.multimodalInput.gestureEvent (Gesture Event) (System APIs)
          • APIs No Longer Maintained
            • @ohos.multimodalInput.inputDeviceCooperate (Screen Hopping) (System API)
        • C APIs
          • Modules
            • Input
          • Header Files
            • oh_axis_type.h
            • oh_input_manager.h
            • oh_key_code.h
          • Structs
            • Input_DeviceListener
            • Input_InterceptorEventCallback
        • Error Codes
          • Screen Hopping Error Codes
          • Input Consumer Error Codes
      • MDM Kit
        • ArkTS APIs
          • @ohos.enterprise.accountManager (Account Management)
          • @ohos.enterprise.adminManager (Enterprise Device Management)
          • @ohos.enterprise.applicationManager (Application Management)
          • @ohos.enterprise.bluetoothManager (Bluetooth Management)
          • @ohos.enterprise.browser (Browser Management)
          • @ohos.enterprise.bundleManager (Bundle Management)
          • @ohos.enterprise.deviceControl (Device Control Management)
          • @ohos.enterprise.deviceInfo (Device Information Management)
          • @ohos.enterprise.deviceSettings (Device Settings Management)
          • @ohos.enterprise.locationManager (Location Service Management)
          • @ohos.enterprise.networkManager (Network Management)
          • @ohos.enterprise.restrictions (Restrictions)
          • @ohos.enterprise.securityManager (Security Management)
          • @ohos.enterprise.systemManager (System Management)
          • @ohos.enterprise.usbManager (USB Management)
          • @ohos.enterprise.wifiManager (Wi-Fi Management)
          • @ohos.enterprise.EnterpriseAdminExtensionAbility (EnterpriseAdminExtensionAbility)
          • @ohos.enterprise.accountManager (Account Management) (System API)
          • @ohos.enterprise.adminManager (Enterprise Device Management) (System API)
          • @ohos.enterprise.applicationManager (Application Management) (System API)
          • @ohos.enterprise.bluetoothManager (Bluetooth Management) (System API)
          • @ohos.enterprise.browser (Browser Management) (System API)
          • @ohos.enterprise.bundleManager (Bundle Management) (System API)
          • @ohos.enterprise.dateTimeManager (System Time Management) (System API)
          • @ohos.enterprise.deviceControl (Device Control) (System API)
          • @ohos.enterprise.deviceInfo (Device Information Management) (System API)
          • @ohos.enterprise.deviceSettings (Device Settings) (System API)
          • @ohos.enterprise.networkManager (Network Management) (System API)
          • @ohos.enterprise.restrictions (Restrictions) (System API)
          • @ohos.enterprise.securityManager (Security Management) (System API)
          • @ohos.enterprise.usbManager (USB Management) (System API)
          • @ohos.enterprise.wifiManager (Wi-Fi Management) (System API)
        • Error Codes
          • Enterprise Device Management Error Codes

    • Hardware

      • Driver Development Kit
        • ArkTS APIs
          • @ohos.app.ability.DriverExtensionAbility (Driver Extension Ability)
          • @ohos.driver.deviceManager (Peripheral Management)
          • @ohos.driver.deviceManager (Peripheral Management) (System API)
          • application
            • DriverExtensionContext
        • C APIs
          • Modules
            • BASE DDK
            • HID DDK
            • USB DDK
          • Header Files
            • ddk_api.h
            • ddk_types.h
            • usb_ddk_api.h
            • usb_ddk_types.h
            • hid_ddk_api.h
            • hid_ddk_types.h
          • Structs
            • DDK_Ashmem
            • UsbConfigDescriptor
            • UsbControlRequestSetup
            • UsbDdkConfigDescriptor
            • UsbDdkEndpointDescriptor
            • UsbDdkInterface
            • UsbDdkInterfaceDescriptor
            • UsbDeviceDescriptor
            • UsbDeviceMemMap
            • UsbEndpointDescriptor
            • UsbInterfaceDescriptor
            • UsbRequestPipe
            • Hid_AbsAxesArray
            • Hid_Device
            • Hid_EmitItem
            • Hid_EventProperties
            • Hid_EventTypeArray
            • Hid_KeyCodeArray
            • Hid_MscEventArray
            • Hid_RelAxesArray
      • Multimodal Awareness Kit
        • ArkTS APIs
          • @ohos.stationary (Device Status Awareness Framework)
      • Sensor Service Kit
        • ArkTS APIs
          • @ohos.sensor (Sensor)
          • @ohos.vibrator (Vibrator)
          • @ohos.sensor (Sensor) (System API)
          • @ohos.sensor (Sensor) (Deprecated API)
          • @ohos.vibrator (Vibrator) (Deprecated API)
        • C APIs
          • Modules
            • Sensor
            • Vibrator
          • Header Files
            • oh_sensor.h
            • oh_sensor_type.h
            • vibrator.h
            • vibrator_type.h
          • Structs
            • Vibrator_Attribute
            • Vibrator_File_Description
        • Error Codes
          • Sensor Error Codes
          • Vibrator Error Codes

    • Debugging Tools

      • Performance Analysis Kit
        • ArkTS APIs
          • @ohos.faultLogger (FaultLogger)
          • @ohos.hichecker (HiChecker)
          • @ohos.hidebug (HiDebug)
          • @ohos.hilog (HiLog)
          • @ohos.hiTraceChain (Distributed Tracing)
          • @ohos.hiTraceMeter (Performance Tracing)
          • @ohos.hiviewdfx.hiAppEvent (Application Event Logging)
          • @ohos.hiviewdfx.jsLeakWatcher (JS Leak Detection)
          • @ohos.hiSysEvent (System Event Logging) (System API)
          • @ohos.logLibrary (Log Library) (System API)
          • APIs No Longer Maintained
            • @ohos.bytrace (Performance Tracing)
            • @ohos.hiAppEvent (Application Event Logging)
        • C APIs
          • Modules
            • HiAppEvent
            • HiDebug
            • HiLog
            • Hitrace
            • HiCollie
          • Header Files
            • hiappevent.h
            • hiappevent_cfg.h
            • hiappevent_event.h
            • hiappevent_param.h
            • hidebug.h
            • hidebug_type.h
            • log.h
            • trace.h
            • hicollie.h
          • Structs
            • HiAppEvent_AppEventGroup
            • HiAppEvent_AppEventInfo
            • HiDebug_MemoryLimit
            • HiDebug_NativeMemInfo
            • HiDebug_SystemMemInfo
            • HiDebug_ThreadCpuUsage
            • HiTraceId
            • HiCollie
        • Error Codes
          • FaultLogger Error Codes
          • Application Event Logging Error Codes
          • HiDebug Error Codes
          • Hidebug CpuUsage Error Codes
          • HiCollie Error Codes
          • HiSysEvent Error Codes
          • Log Library Error Codes
      • Test Kit
        • ArkTS APIs
          • @ohos.app.ability.abilityDelegatorRegistry (AbilityDelegatorRegistry)
          • @ohos.application.testRunner (TestRunner)
          • @ohos.UiTest
          • Dependent Elements and Definitions
            • abilityDelegator
            • abilityDelegatorArgs
            • shellCmdResult
          • APIs No Longer Maintained
            • @ohos.application.abilityDelegatorRegistry (AbilityDelegatorRegistry)
        • Error Codes
          • UiTest Error Codes

  • Media

    • Audio Kit
      • ArkTS APIs
        • @ohos.multimedia.audio (Audio Management)
        • @ohos.multimedia.audioHaptic (Audio-Haptic)
        • @ohos.multimedia.audio (Audio Management) (System API)
        • @ohos.multimedia.systemSoundManager (System Sound Management) (System API)
        • multimedia
          • ringtonePlayer (Ringtone Player) (System API)
          • systemTonePlayer (System Alert Tone Player) (System API)
      • ArkTS Components
        • @ohos.multimedia.avVolumePanel (Volume Panel)
      • C APIs
        • Modules
          • OHAudio
        • Header Files
          • native_audio_common.h
          • native_audio_device_base.h
          • native_audio_manager.h
          • native_audio_routing_manager.h
          • native_audio_session_manager.h
          • native_audiocapturer.h
          • native_audiorenderer.h
          • native_audiostream_base.h
          • native_audiostreambuilder.h
        • Structs
          • OH_AudioCapturer_Callbacks_Struct
          • OH_AudioDeviceDescriptorArray
          • OH_AudioRenderer_Callbacks_Struct
          • OH_AudioSession_DeactivatedEvent
          • OH_AudioSession_Strategy
      • Error Codes
        • Audio Error Codes
    • AVCodec Kit
      • C APIs
        • Modules
          • AudioCodec
          • AVCapability
          • AVDemuxer
          • AVMuxer
          • AVSource
          • CodecBase
          • Core
          • VideoDecoder
          • VideoEncoder
          • Multimedia_Drm
        • Header Files
          • native_audio_channel_layout.h
          • native_avbuffer.h
          • native_avbuffer_info.h
          • native_avcapability.h
          • native_avcodec_audiocodec.h
          • native_avcodec_base.h
          • native_avcodec_videodecoder.h
          • native_avcodec_videoencoder.h
          • native_avdemuxer.h
          • native_averrors.h
          • native_avformat.h
          • native_avmemory.h
          • native_avmuxer.h
          • native_avsource.h
          • native_cencinfo.h
        • Structs
          • OH_AVCodecAsyncCallback
          • OH_AVCodecBufferAttr
          • OH_AVCodecCallback
          • OH_AVDataSource
          • OH_AVRange
          • DrmSubsample
        • APIs No Longer Maintained
          • Modules
            • AudioDecoder
            • AudioEncoder
          • Header Files
            • avcodec_audio_channel_layout.h
            • native_avcodec_audiodecoder.h
            • native_avcodec_audioencoder.h
    • AVSession Kit
      • ArkTS APIs
        • @ohos.multimedia.avsession (AVSession Management)
        • @ohos.multimedia.avCastPickerParam (AVCastPicker Parameters)
        • @ohos.app.ability.MediaControlExtensionAbility (ExtensionAbility for Media Playback Control) (System API)
        • @ohos.multimedia.avsession (AVSession Management) (System API)
        • application
          • MediaControlExtensionContext (ExtensionAbility Context for Media Playback Control) (System API)
      • ArkTS Components
        • @ohos.multimedia.avCastPicker (AVCastPicker)
      • C APIs
        • Modules
          • OHAVSession
        • Header Files
          • native_avmetadata.h
          • native_avsession.h
          • native_avsession_errors.h
        • Structs
          • AVSession_PlaybackPosition
      • Error Codes
        • AVSession Management Error Codes
    • Camera Kit
      • ArkTS APIs
        • @ohos.multimedia.camera (Camera Management)
        • @ohos.multimedia.cameraPicker (Camera Picker)
        • @ohos.multimedia.camera (Camera Management) (System API)
      • C APIs
        • Modules
          • OH_Camera
        • Header Files
          • camera.h
          • camera_device.h
          • camera_input.h
          • camera_manager.h
          • capture_session.h
          • metadata_output.h
          • photo_native.h
          • photo_output.h
          • preview_output.h
          • video_output.h
        • Structs
          • Camera_CaptureEndInfo
          • Camera_CaptureStartInfo
          • Camera_Device
          • Camera_FrameRateRange
          • Camera_FrameShutterEndInfo
          • Camera_FrameShutterInfo
          • Camera_Location
          • Camera_MetadataObject
          • Camera_OutputCapability
          • Camera_PhotoCaptureSetting
          • Camera_Point
          • Camera_Profile
          • Camera_Rect
          • Camera_Size
          • Camera_SmoothZoomInfo
          • Camera_StatusInfo
          • Camera_TorchStatusInfo
          • Camera_VideoProfile
          • CameraInput_Callbacks
          • CameraManager_Callbacks
          • CaptureSession_Callbacks
          • MetadataOutput_Callbacks
          • PhotoOutput_Callbacks
          • PreviewOutput_Callbacks
          • VideoOutput_Callbacks
      • Error Codes
        • Camera Error Codes
    • DRM Kit
      • ArkTS APIs
        • @ohos.multimedia.drm (Digital Rights Management)
      • C APIs
        • Modules
          • Drm
        • Header Files
          • native_drm_common.h
          • native_drm_err.h
          • native_mediakeysession.h
          • native_mediakeysystem.h
        • Structs
          • DRM_KeysInfo
          • DRM_MediaKeyRequest
          • DRM_MediaKeyRequestInfo
          • DRM_MediaKeyStatus
          • DRM_MediaKeySystemDescription
          • DRM_MediaKeySystemInfo
          • DRM_OfflineMediakeyIdArray
          • DRM_PsshInfo
          • DRM_Statistics
          • MediaKeySession_Callback
          • OH_MediaKeySession_Callback
      • Error Codes
        • DRM Error Codes
    • Image Kit
      • ArkTS APIs
        • @ohos.multimedia.image (Image Processing)
        • @ohos.multimedia.sendableImage (Image Processing Based on Sendable Objects)
        • @ohos.multimedia.image (Image Processing) (System API)
      • C APIs
        • Modules
          • Image
          • Image_NativeModule
          • ImageEffect
          • ImageProcessing
        • Header Files
          • image_mdk.h
          • image_mdk_common.h
          • image_packer_mdk.h
          • image_pixel_map_mdk.h
          • image_pixel_map_napi.h
          • image_receiver_mdk.h
          • image_source_mdk.h
          • image_common.h
          • image_native.h
          • image_packer_native.h
          • image_receiver_native.h
          • image_source_native.h
          • picture_native.h
          • pixelmap_native.h
          • image_effect.h
          • image_effect_errors.h
          • image_effect_filter.h
          • image_processing.h
          • image_processing_types.h
        • Structs
          • ImagePacker_Opts
          • OH_Pixelmap_HdrDynamicMetadata
          • OH_Pixelmap_HdrGainmapMetadata
          • OH_Pixelmap_HdrMetadataValue
          • OH_Pixelmap_HdrStaticMetadata
          • OhosImageComponent
          • OhosImageRect
          • OhosPixelMapInfo
          • OhosImageDecodingOps
          • OhosImageReceiverInfo
          • OhosImageRegion
          • OhosImageSize
          • OhosImageSource
          • OhosImageSourceDelayTimeList
          • OhosImageSourceInfo
          • OhosImageSourceOps
          • OhosImageSourceProperty
          • OhosImageSourceSupportedFormat
          • OhosImageSourceSupportedFormatList
          • OhosImageSourceUpdateData
          • OhosPixelMapCreateOps
          • OhosPixelMapInfos
          • Image_Region
          • Image_Size
          • Image_String
          • ImageEffect_Any
          • ImageEffect_DataValue
          • ImageEffect_FilterDelegate
          • ImageEffect_FilterNames
          • ImageEffect_Region
          • ImageEffect_Size
          • ImageProcessing_ColorSpaceInfo
      • Error Codes
        • Image Error Codes
    • Media Kit
      • ArkTS APIs
        • @ohos.multimedia.media (Media)
        • @ohos.multimedia.media (Media) (System API)
        • multimedia
          • SoundPool (Sound Pool)
          • SoundPool (Sound Pool) (System API)
      • C APIs
        • Modules
          • AVPlayer
          • AVScreenCapture
          • VideoProcessing
        • Header Files
          • avplayer.h
          • avplayer_base.h
          • native_avscreen_capture.h
          • native_avscreen_capture_base.h
          • native_avscreen_capture_errors.h
          • video_processing.h
          • video_processing_types.h
        • Structs
          • AVPlayerCallback
          • OH_AudioBuffer
          • OH_AudioCaptureInfo
          • OH_AudioEncInfo
          • OH_AudioInfo
          • OH_AVScreenCaptureCallback
          • OH_AVScreenCaptureConfig
          • OH_RecorderInfo
          • OH_Rect
          • OH_VideoCaptureInfo
          • OH_VideoEncInfo
          • OH_VideoInfo
          • VideoProcessing_ColorSpaceInfo
      • Error Codes
        • Media Error Codes
    • Media Library Kit
      • ArkTS APIs
        • @ohos.file.photoAccessHelper (Album Management)
        • @ohos.file.sendablePhotoAccessHelper (Album Management Based on a Sendable Object)
        • @ohos.file.photoAccessHelper (Album Management) (System API)
        • @ohos.file.sendablePhotoAccessHelper (Album Management Based on a Sendable Object) (System API)
      • ArkTS Components
        • @ohos.file.AlbumPickerComponent (AlbumPickerComponent)
        • @ohos.file.PhotoPickerComponent (PhotoPicker Component)
        • @ohos.file.RecentPhotoComponent (RecentPhotoComponent)
        • @ohos.multimedia.movingphotoview (MovingPhotoView Component)
      • C APIs
        • Modules
          • MediaAssetManager
        • Header Files
          • media_access_helper_capi.h
          • media_asset_base_capi.h
          • media_asset_capi.h
          • media_asset_change_request_capi.h
          • media_asset_manager_capi.h
          • moving_photo_capi.h
        • Structs
          • MediaLibrary_RequestId
          • MediaLibrary_RequestOptions

  • Graphics

    • ArkGraphics 2D
      • ArkTS APIs
        • @ohos.effectKit (Image Effects)
        • @ohos.graphics.colorSpaceManager (Color Space Management)
        • @ohos.graphics.sendableColorSpaceManager (Sendable Color Space Management)
        • @ohos.graphics.common2D (Common Data Types of 2D Graphics)
        • @ohos.graphics.displaySync (Variable Frame Rate)
        • @ohos.graphics.drawing (Drawing)
        • @ohos.graphics.hdrCapability (HDR Capability)
        • @ohos.graphics.text (Text)
        • @ohos.graphics.uiEffect (Cascading Effect)
        • @ohos.graphics.uiEffect (Cascading Effect) (System API)
      • C APIs
        • Modules
          • Drawing
          • EffectKit
          • NativeDisplaySoloist
          • NativeVsync
          • NativeWindow
          • OH_NativeBuffer
          • OH_NativeImage
          • NativeColorSpaceManager
        • Header Files
          • drawing_bitmap.h
          • drawing_brush.h
          • drawing_canvas.h
          • drawing_color.h
          • drawing_color_filter.h
          • drawing_color_space.h
          • drawing_error_code.h
          • drawing_filter.h
          • drawing_font.h
          • drawing_font_collection.h
          • drawing_font_mgr.h
          • drawing_gpu_context.h
          • drawing_image.h
          • drawing_image_filter.h
          • drawing_mask_filter.h
          • drawing_matrix.h
          • drawing_memory_stream.h
          • drawing_path.h
          • drawing_path_effect.h
          • drawing_pen.h
          • drawing_pixel_map.h
          • drawing_point.h
          • drawing_record_cmd.h
          • drawing_rect.h
          • drawing_region.h
          • drawing_register_font.h
          • drawing_round_rect.h
          • drawing_sampling_options.h
          • drawing_shader_effect.h
          • drawing_shadow_layer.h
          • drawing_surface.h
          • drawing_text_blob.h
          • drawing_text_declaration.h
          • drawing_text_font_descriptor.h
          • drawing_text_typography.h
          • drawing_typeface.h
          • drawing_types.h
          • effect_filter.h
          • effect_types.h
          • buffer_handle.h
          • external_window.h
          • buffer_common.h
          • native_buffer.h
          • native_display_soloist.h
          • native_image.h
          • native_vsync.h
          • native_color_space_manager.h
        • Structs
          • DisplaySoloist_ExpectedRateRange
          • OH_Drawing_BitmapFormat
          • OH_Drawing_Font_Metrics
          • OH_Drawing_FontAdjustInfo
          • OH_Drawing_FontAliasInfo
          • OH_Drawing_FontConfigInfo
          • OH_Drawing_FontDescriptor
          • OH_Drawing_FontFallbackGroup
          • OH_Drawing_FontFallbackInfo
          • OH_Drawing_FontFeature
          • OH_Drawing_FontGenericInfo
          • OH_Drawing_FontStyleStruct
          • OH_Drawing_GpuContextOptions
          • OH_Drawing_Image_Info
          • OH_Drawing_LineMetrics
          • OH_Drawing_PlaceholderSpan
          • OH_Drawing_Point2D
          • OH_Drawing_Point3D
          • OH_Drawing_RectStyle_Info
          • OH_Drawing_RunBuffer
          • OH_Drawing_String
          • OH_Drawing_StrutStyle
          • OH_Filter_ColorMatrix
          • OH_NativeBuffer_ColorXY
          • OH_NativeBuffer_Config
          • OH_NativeBuffer_Cta861
          • OH_NativeBuffer_Plane
          • OH_NativeBuffer_Planes
          • OH_NativeBuffer_Smpte2086
          • OH_NativeBuffer_StaticMetadata
          • OH_OnFrameAvailableListener
          • BufferHandle
          • OHExtDataHandle
          • OHHDRMetaData
          • Region
          • Rect
          • ColorSpacePrimaries
          • WhitePointArray
      • Error Codes
        • colorSpaceManager Error Codes
    • ArkGraphics 3D
      • ArkTS APIs
        • @ohos.graphics.scene (ArkGraphics 3D)
        • graphics3d
          • Scene
          • SceneNode
          • SceneType
          • SceneResources
          • ScenePostProcessSettings

  • Application Services

    • Ads Kit
      • ArkTS APIs
        • @ohos.advertising (Ads Service Framework)
        • @ohos.identifier.oaid (OAID)
        • @ohos.advertising.AdsServiceExtensionAbility (ExtensionAbility for Ads)
        • @ohos.advertising.AdsServiceExtensionAbility (ExtensionAbility for Ads) (System API)
        • @ohos.identifier.oaid (OAID) (System API)
      • ArkTS Components
        • @ohos.advertising.AdComponent (Non-Full-Screen Ad Component)
        • @ohos.advertising.AutoAdComponent (Carousel Ad Component)
      • Error Codes
        • Ads Service Framework Error Codes
        • OAID Error Codes
    • Calendar Kit
      • ArkTS APIs
        • @ohos.calendarManager (Calendar Manager)
      • Error Codes
        • CalendarManager Error Codes
    • Contacts Kit
      • ArkTS APIs
        • @ohos.contact (Contacts)
    • Location Kit
      • ArkTS APIs
        • @ohos.geoLocationManager (Geolocation Manager)
        • @ohos.geoLocationManager (Geolocation Manager) (System API)
        • @ohos.app.ability.FenceExtensionAbility (FenceExtensionAbility)
        • @ohos.app.ability.FenceExtensionContext (FenceExtensionContext)
        • @ohos.app.ability.FenceExtensionContext (FenceExtensionContext) (System API)
        • APIs No Longer Maintained
          • @ohos.geolocation (Geolocation)
          • @system.geolocation (Geolocation)
      • C APIs
        • Modules
          • Location
        • Header Files
          • oh_location.h
          • oh_location_type.h
        • Structs
          • Location_BasicInfo
      • Error Codes
        • Location Service Error Codes
    • Notification Kit
      • ArkTS APIs
        • @ohos.notificationManager (NotificationManager)
        • @ohos.notificationManager (NotificationManager) (System API)
        • @ohos.notificationSubscribe (NotificationSubscribe) (System API)
        • notification
          • NotificationActionButton
          • NotificationCommonDef
          • NotificationContent
          • NotificationFlags
          • NotificationRequest
          • NotificationSlot
          • NotificationTemplate
          • NotificationUserInput
          • NotificationContent (System API)
          • NotificationFlags (System API)
          • NotificationRequest (System API)
          • NotificationSlot (System API)
          • NotificationSorting (System API)
          • NotificationSortingMap (System API)
          • NotificationSubscriber (System API)
          • NotificationSubscribeInfo (System API)
        • APIs No Longer Maintained
          • @ohos.notification (Notification)
          • @system.notification (Notification)
          • @ohos.notification (Notification) (System API)
      • C APIs
        • Modules
          • Notification
        • Header Files
          • notification.h
      • Error Codes
        • Notification Error Codes

  • AI

    • MindSpore Lite Kit
      • ArkTS APIs
        • @ohos.ai.mindSporeLite (On-device AI Framework)
      • C APIs
        • Modules
          • MindSpore
        • Header Files
          • context.h
          • data_type.h
          • format.h
          • model.h
          • status.h
          • tensor.h
          • types.h
        • Structs
          • OH_AI_CallBackParam
          • OH_AI_ShapeInfo
          • OH_AI_TensorHandleArray
    • Neural Network Runtime Kit
      • C APIs
        • Modules
          • NeuralNetworkRuntime
        • Header Files
          • neural_network_core.h
          • neural_network_runtime.h
          • neural_network_runtime_type.h
        • Structs
          • OH_NN_Memory
          • OH_NN_QuantParam
          • OH_NN_Tensor
          • OH_NN_UInt32Array

  • Common Basic Capability

    • ArkTS APIs
      • Console
      • SysCap
      • Timer
    • C APIs
      • Modules
        • Init
        • Memory
        • JSVM
      • Header Files
        • syscap_ndk.h
        • purgeable_memory.h
        • jsvm.h
        • jsvm_types.h
      • Structs
        • JSVM_CallbackStruct
        • JSVM_CreateVMOptions
        • JSVM_ExtendedErrorInfo
        • JSVM_HeapStatistics
        • JSVM_InitOptions
        • JSVM_PropertyDescriptor
        • JSVM_PropertyHandlerConfigurationStruct
        • JSVM_ScriptOrigin
        • JSVM_TypeTag
        • JSVM_VMInfo

  • Standard Library

    • libc
    • libc++
    • Node-API
    • libuv
    • OpenSL ES
    • OpenGL ES
    • EGL
    • ICU4C
    • Zlib
    • Vulkan
      • Vulkan Development
      • Vulkan Capabilities
      • Vulkan Extensions
        • Vulkan Module
        • vulkan_ohos.h
        • VkExternalFormatOHOS
        • VkImportNativeBufferInfoOHOS
        • VkMemoryGetNativeBufferInfoOHOS
        • VkNativeBufferFormatPropertiesOHOS
        • VkNativeBufferPropertiesOHOS
        • VkNativeBufferUsageOHOS
        • VkSurfaceCreateInfoOHOS
    • Appendix
      • libc Symbols Not Exported
      • Restricted musl libc APIs
      • EGL Symbols Exported
      • ICU4C Symbols Exported from Native APIs
      • OpenGL ES 3.2 Symbols Exported

• FAQs
  • Full SDK Compilation
  • Switching to Full SDK
  • Application Model Development
  • ArkUI Development (ArkTS)
    • ArkTS Syntax Usage
    • ArkUI Component Development (ArkTS)
    • ArkUI Layout Development (ArkTS)
    • ArkUI Routing/Navigation Development (ArkTS)
    • ArkUI Animation/Interaction Event Development (ArkTS)
  • ArkUI Development (JS)
  • ArkTS Common Library Development
  • Web Development
  • Bundle Management Development
  • Resource Manager Development
  • Common Event and Notification Development
  • Graphics Development
  • Window Management Development
  • Multimedia Development
  • Basic Security Capability Development
  • Ability Access Control Development
  • Data Management Development
  • File Management Development
  • Network Management Development
  • DFX Development
  • Pan-Sensor Development
  • Startup Development
  • SDK Usage
  • NDK Usage
  • Compiler and Runtime
  • Usage of Third- and Fourth-Party Libraries