OpenHarmony Developer Documentation (Cangjie)

• Getting Started

  • Application Development Guide
  • Quick Start
    • Development Preparations
    • Building Your First Cangjie Application
  • Using Cangjie Modules in ArkTS Applications
  • Using ArkTS APIs in Cangjie Applications
  • Development Fundamentals
    • Application Package Basics
      • Application Package Overview
    • Application Package Structure
      • Stage Model Application Package Structure
    • Application Package Development and Usage
      • HAP
      • HAR
    • Application Package Installation, Uninstallation, and Updates
      • Application Installation/Uninstallation and Update Development Guide
      • Application Installation and Update Consistency Verification
    • Application Configuration Files (Stage Model)
      • Application Configuration File Overview (Stage Model)
      • app.json5 Configuration File
      • module.json5 Configuration File
    • Application Package FAQs
    • Application Package Terminology
  • Resource Classification and Access

• Development

  • Application Framework
    • Ability Kit (Program Framework Services)
      • Ability Kit Introduction
      • Application Models
      • Stage Model Development Guide
        • Stage Model Application Components
          • Application/Component-Level Configuration
          • UIAbility Component
            • UIAbility Component Overview
            • UIAbility Component Lifecycle
            • UIAbility Component Launch Modes
            • UIAbility Component Basic Usage
            • Launching UIAbility Components Within an Application
          • Information Carrier Want
            • Want Overview
            • Explicit Want vs Implicit Want Matching Rules
            • Common Actions and Entities (Deprecated)
        • Cross-Application Navigation
          • Launching Specific Types of Applications
            • Launching File Handling Applications (startAbility)
        • Stage Model Application Configuration File
    • ArkData (Ark Data Management)
      • ArkData Introduction
      • Application Data Persistence
        • Application Data Persistence Overview
        • Data Persistence via User Preferences
        • Data Persistence via Key-Value Database
        • Data Persistence via Relational Database
      • Cross-Device Data Synchronization for Same Application (Distributed)
        • Cross-Device Data Synchronization Overview
        • Relational Database Cross-Device Data Synchronization
      • Data Reliability and Security
        • Data Reliability and Security Overview
        • Database Backup and Recovery
        • Database Encryption
        • Access Control Based on Device Classification and Data Level
    • ArkUI (Ark UI Framework)
      • ArkUI Introduction
      • UI Development (Cangjie Declarative Development Paradigm)
        • UI Development (Cangjie Declarative Paradigm) Overview
        • Learning Basic UI Paradigm Syntax
          • Basic Syntax Overview
          • Declarative UI Description
          • Custom Components
            • Creating Custom Components
            • Page and Custom Component Lifecycle
            • Custom Component Member Property Access Modifier Restrictions
          • @Builder Macro: Custom Build Functions
          • @BuilderParam Macro: Referencing @Builder Functions
          • @Reusable Macro: Component Reuse
        • Learning UI Paradigm State Management
          • State Management Overview
          • State Management (V1)
            • Managing Component-Owned States
              • @State Macro: Component-Internal State
              • @Prop Macro: Parent-to-Child Unidirectional Sync
              • @Link Macro: Parent-Child Bidirectional Sync
              • @Provide and @Consume Macros: Bidirectional Sync with Descendant Components
              • @Observed and @Publish Macros: Nested Class Object Property Changes
            • Managing Application-Owned States
              • Application-Owned State Management Overview
              • LocalStorage: Page-Level UI State Storage
              • AppStorage: Application-Wide UI State Storage
              • PersistentStorage: Persistent UI State Storage
              • Environment: Device Environment Query
            • Other State Management
              • Other State Management Overview
              • @Watch Macro: State Variable Change Notification
            • MVVM Pattern
            • State Management Best Practices
            • State Management Proper Usage Development Guide
        • Learning UI Paradigm Rendering Control
          • Rendering Control Overview
          • if/else: Conditional Rendering
          • ForEach: Loop Rendering
          • LazyForEach: Lazy Data Loading
        • Layout Development
          • Layout Overview
          • Building Layouts
            • Linear Layout (Row/Column)
            • Stack Layout (Stack)
            • Flex Layout (Flex)
            • Relative Layout (RelativeContainer)
            • Grid Layout (GridRow/GridCol)
            • Creating Lists (List)
            • Creating Grids (Grid/GridItem)
            • Creating Carousels (Swiper)
            • Tabs
        • Adding Components
          • Button
          • Radio Button
          • Toggle Button
          • Progress Bar
          • Displaying Images (Image)
          • Video Player
        • Setting Up Component Navigation and Page Routing
          • Component Navigation and Page Routing Overview
          • Component Navigation (Navigation) (Recommended)
          • Navigation Transition
        • Working with Text
          • Text Overview
          • Text Display (Text/Span)
          • Text Input (TextInput/TextArea)
          • Rich Text (RichEditor)
        • Using Dialogs
          • Dialog Overview
          • Using Dialog Boxes
            • Dialog Box Overview
            • Global Custom Dialog Independent of UI Components (openCustomDialog)
            • Basic Custom Dialog (CustomDialog) (Deprecated)
            • Fixed-Style Dialog Boxes
            • Page-Level Dialog Box
          • Menu Control
          • Popup Tips
          • Binding Modal Pages
            • Modal Page Binding Overview
            • Binding Half-Modal Pages (bindSheet)
            • Binding Full-Modal Pages (bindContentCover)
          • Instant Feedback (Toast)
        • Displaying Graphics
          • Drawing Geometric Shapes (Shape)
          • Drawing Custom Graphics Using Canvas
        • Using Animations
          • Animation Overview
          • Property Animation
            • Property Animation Overview
            • Implementing Property Animation
          • Transition Animation
            • Transition Animation Overview
            • Enter/Exit Transition
            • Modal Transition
            • Shared Element Transition (One-Shot)
            • Screen Rotation Animation
            • Page Transition Animation (Deprecated)
          • Component Animation
          • Animation Curves
            • Animation Curve Overview
            • Traditional Curves
            • Spring Curves
          • Animation Smoothing
          • Animation Effects
            • Blur
            • Shadow
            • Color
          • Frame Animation (ohos.animator)
        • Supporting Interaction Events
          • Interaction Events Overview
          • Using Common Events
            • Event Distribution
            • Touch Screen Events
            • Keyboard/Mouse Events
            • Focus Events
        • Using Mirroring Capabilities
        • Theme Settings
          • Application Dark/Light Mode Adaptation
    • Window Management
      • Managing Application Windows
    • Screen Management
      • Using Display to Obtain Screen Properties and State Monitoring
    • ArkWeb (Ark Web)
      • ArkWeb Introduction
      • Setting Basic Properties and Events
        • User-Agent Development Guide
        • Setting Dark Mode
      • Managing Web Page Interactions
        • Web Component Nested Scrolling
        • Web Page Content Scrolling
      • Managing Web Component Network Security and Privacy
        • Secure Shield Mode
      • Managing Web Page Loading and Browsing History
        • Loading Pages Using Web Components
      • Processing Web Content
        • Using Web Component PDF Preview Capability
        • Safe Area Calculation and Avoidance Adaptation in Web Pages
      • Web Debugging and Maintenance
        • Debugging Frontend Pages Using DevTools
        • Collecting Web Component Crash Information Using Crashpad
    • Core File Kit (File Basic Services)
      • Core File Kit Introduction
      • Application Files
        • Application Files Overview
        • Application Sandbox Directory
        • Application File Access and Management
          • Application File Access (Cangjie)
        • Application File Sharing
      • Pushing Files to Application Sandbox
      • User Files
        • User Files Overview
    • Localization Kit (Localization Development Service)
      • Introduction to Localization Kit
      • Application Internationalization
        • International UI Design
        • Setting Calendar and Almanac
        • Timezone and Daylight Saving Time Internationalization
          • Daylight Saving Time Transition
        • Localized Names
          • Localized Timezone Names
      • Application Localization
        • Improving Translatability
          • Providing Translation Context
          • Supporting Singular/Plural Forms
      • Localization Testing
        • Language Testing
  • System
    • Security
      • Application Access Control
        • Access Control Overview
        • Application Permission Management
          • Application Permission Management Overview
          • Requesting Application Permissions
            • Selecting Permission Request Method
            • Declaring Permissions
            • Requesting User Authorization
            • Requesting One-Time Authorization
            • Requesting Restricted Permissions
          • Application Permission List
            • Open Permissions (System Authorization)
            • Open Permissions (User Authorization)
            • Restricted Open Permissions
            • System-App-Only Permissions (System Authorization) with ACL
            • System-App-Only Permissions (System Authorization) without ACL
            • System-App-Only Permissions (User Authorization)
            • Enterprise Application Permissions
            • MDM-Application-Only Permissions
          • Application Permission Group List
      • Crypto Architecture Kit (Cryptographic Algorithm Framework Service)
        • 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
          • Key Generation and Conversion Development Guide
            • Random Symmetric Key Generation (Cangjie)
            • Binary Data to Symmetric Key Conversion (Cangjie)
        • Encryption/Decryption
          • Encryption/Decryption Overview
          • Encryption/Decryption Algorithm Specifications
            • Symmetric Key Encryption/Decryption Specifications
            • Asymmetric Key Encryption/Decryption Specifications
            • Segmented Encryption/Decryption Instructions
          • Encryption/Decryption Development Guide
            • AES Symmetric Key (GCM Mode) Encryption/Decryption (Cangjie)
            • AES Symmetric Key (CCM Mode) Encryption/Decryption (Cangjie)
            • AES Symmetric Key (CBC Mode) Encryption/Decryption (Cangjie)
            • AES Symmetric Key (ECB Mode) Encryption/Decryption (Cangjie)
            • AES Symmetric Key (GCM Mode) Segmented Encryption/Decryption (Cangjie)
            • 3DES Symmetric Key (ECB Mode) Encryption/Decryption (Cangjie)
            • SM4 Symmetric Key (ECB Mode) Encryption/Decryption (Cangjie)
            • SM4 Symmetric Key (CBC Mode) Encryption/Decryption (Cangjie)
            • SM4 Symmetric Key (GCM Mode) Encryption/Decryption (Cangjie)
            • SM4 Symmetric Key (GCM Mode) Segmented Encryption/Decryption (Cangjie)
        • Message Digest Calculation
          • Message Digest Calculation Overview and Specifications
          • Message Digest Calculation Development Guide
            • SHA256 Message Digest Calculation (Cangjie)
            • MD5 Message Digest Calculation (Cangjie)
        • Message Authentication Code Calculation
        • Secure Random Number Generation
      • Universal Keystore Kit (Key Management Service)
        • Introduction to Universal Keystore Kit
        • Universal Keystore Basic Concepts
        • Key Generation/Import
          • Key Generation
            • Key Generation Overview and Specifications
            • Development Guide
              • Key Generation (Cangjie)
          • Key Import
            • Key Import Overview and Specifications
            • Development Guide
              • Plaintext Key Import (Cangjie)
              • Encrypted Key Import (Cangjie)
        • Key Usage
          • Key Usage Overview and General Process
          • Encryption/Decryption
            • Encryption/Decryption Overview and Specifications
            • Development Guide
              • Encryption/Decryption (Cangjie)
          • Signing/Verification
            • Signing/Verification Overview and Specifications
            • Development Guide
              • Signing/Verification (Cangjie)
          • Key Agreement
            • Key Agreement Overview and Specifications
            • Development Guide
              • Key Agreement (Cangjie)
          • Key Derivation
            • Key Derivation Overview and Specifications
            • Development Guide
              • Key Derivation (Cangjie)
          • HMAC
            • HMAC Overview and Specifications
            • Development Guide
              • HMAC (Cangjie)
        • Key Deletion
          • Key Deletion (Cangjie)
        • Key Attestation
          • Key Attestation Overview and Specifications
          • Development Guide
            • Anonymous Key Attestation (Cangjie)
            • Non-Anonymous Key Attestation (Cangjie)
        • Other Operations
          • Key Existence Check
            • Key Existence Check (Cangjie)
          • Key Property Retrieval
            • Key Property Retrieval (Cangjie)
          • Key Export
            • Key Export (Cangjie)
    • Network
      • Connectivity Kit (Short-Range Communication Service)
        • Introduction to Connectivity Kit
        • Bluetooth
          • Bluetooth Service Development Overview
          • Advertising and Scanning
          • Generic Attribute Profile
      • Network Kit (Network Service)
        • Introduction to Network Kit
        • Network Kit Data Transmission Capabilities
          • HTTP Data Request
        • Network Kit Network Management Capabilities
          • Network Connection Management
      • Telephony Kit (Cellular Communication Service)
        • Making Phone Calls
    • Basic Features
      • Basic Services Kit (Basic Services)
        • Introduction to Basic Services Kit
        • Process/Thread Communication
          • Inter-Process Communication Using Common Events
            • Common Event Overview
            • Dynamic Common Event Subscription
            • Dynamic Common Event Unsubscription
            • Publishing Common Events
        • Upload/Download
          • Application File Upload/Download
    • Hardware
      • Sensor Service Kit (Sensor Service)
        • Introduction to Sensor Service Kit Development
        • Sensors
          • Sensor Development Overview
          • Sensor Development Guide (Cangjie)
    • Debugging and Optimization
      • Performance Analysis Kit (Performance Analysis Service)
        • Introduction to Performance Analysis Kit
        • HiLog Usage Guide
          • Logging with HiLog (Cangjie)
        • HiAppEvent Usage Guide
          • HiAppEvent Introduction
          • Event Subscription
            • Application Events
              • Subscribing to Application Events (Cangjie)
            • System Events
              • Crash Events
                • Crash Event Introduction
                • Subscribing to Crash Events (Cangjie)
              • Appfreeze Events
                • Appfreeze Event Introduction
                • Subscribing to Appfreeze Events (Cangjie)
          • Event Reporting
        • HiTraceMeter Usage Guide
          • Viewing HiTraceMeter Logs
        • Error Management
          • Error Management Development Guide
        • Fault Analysis
          • Analyzing Cangjie Crash (Process Crash)
          • Analyzing AppFreeze (Application Not Responding)
        • Command Line Tools
          • hdc
          • hilog
          • hidumper
          • hitrace
          • hiperf
      • Test Kit (Application Testing Service)
        • Test Kit Overview
        • Automated Testing Framework Usage Guide
      • Debugging Commands
        • aa Tool
        • bm Tool
        • Packing/Unpacking Tools
          • Packing Tool
          • Unpacking Tool
        • Scanning Tool
        • cem Tool
        • anm Tool
        • restool Tool
        • param Tool
        • power-shell Tool
        • atm Tool
        • acm Tool
        • Command Line Tools
          • toybox
          • mediatool Tool
          • devicedebug Tool
  • Media
    • Camera Kit (Camera Service)
      • Camera Kit Overview
      • Development Preparation
      • Camera Development Guide
        • Camera Management
        • Device Input
        • Session Management
        • Flashlight Usage
    • Image Kit (Image Processing Service)
      • Image Kit Overview
      • Image Development Guide
        • Using ImageSource for Image Decoding
        • Using PixelMap for Image Transformation
        • Using PixelMap for Bitmap Operations
        • Using ImagePacker for Image Encoding
        • Editing Image EXIF Information
    • Media Kit (Media Service)
      • Media Development Guide
        • Media Information Query
          • Using AVImageGenerator to Extract Video Frames at Specified Times (Cangjie)
        • AVCodec Supported Formats
    • Media Library Kit (Media File Management Service)
      • Restricted Capabilities
        • System Album Resource Usage Guide
  • Graphics
    • ArkGraphics 2D (Ark 2D Graphics Service)
      • ArkGraphics 2D Introduction
      • Customizing Drawing Frame Rates for Different Content Using Variable Frame Rate Capability
        • Variable Frame Rate Overview
        • Requesting Animation Drawing Frame Rate
  • Application Services
    • Location Kit (Location Service)
      • Location Kit Introduction
      • Location Permission Application Development Guide
      • Device Location Information Acquisition Development Guide

• API Reference

  • API Reference Overview
    • Development Instructions
    • SystemCapability Usage Guide
    • SystemCapability List
      • Phone
      • Tablet
    • API Tagging Control
    • Universal Error Codes
  • Application Framework
    • Ability Kit (Application Framework Service)
      • Cangjie API
        • ohos.app.ability.ui_ability
        • ohos.app.ability.want
        • ohos.ability_access_ctrl (Application Access Control Management)
        • ohos.bundle.bundle_manager (bundleManager Management)
        • ohos.app.ability.ability_stage
        • ohos.app.ability.ability_result
        • ohos.app.ability.app_recovery
        • ohos.app.ability.ability_constant
        • ohos.app.ability.context_constant
        • ohos.app.ability.dialog_request
        • ohos.app.ability.start_options
        • ohos.app.ability.want_constant
        • ohos.app.ability
        • ohos.application.error_observer
        • ohos.application.test_runner
        • ohos.element_name
        • ohos.metadata
        • ohos.security.permission_request_result (PermissionRequestResult)
        • ohos.security.skill
        • ohos.app.ability.error_manager
      • Error Codes
        • Ability Subsystem Error Codes
        • Bundle Management Subsystem Universal Error Codes
        • Access Control Error Codes
        • Screen Lock Sensitive Data Management Error Codes
    • ArkData (Ark Data Management)
      • Cangjie API
        • ohos.data_share_predicates (Data Share Predicates)
        • ohos.distributed_kv_store (Distributed Key-Value Database)
        • ohos.preferences (User Preferences)
        • ohos.relational_store (Relational Database)
        • ohos.values_bucket (Data Set)
      • Error Codes
        • Relational Database Error Codes
        • Distributed Key-Value Database Error Codes
        • User Preferences Error Codes
    • ArkUI (Ark UI Framework)
      • Cangjie API
        • UI Interface
          • ohos.arkui.component_utils (ComponentUtils)
          • ohos.arkui.shape (Shape)
          • ohos.curves (Interpolation Calculation)
          • ohos.arkui.ui_context (UIContext)
            • AnimatorResult
            • ContextMenuController
            • Font
            • MeasureUtils
            • PromptAction
            • Router
            • UIContext
        • Window Management
          • ohos.window (Window)
        • Screen Management
          • ohos.display (Screen Properties)
      • Cangjie Components
        • Universal Events
          • Click Event
          • Touch Event
          • Mount/Unmount Event
          • Key Event
          • Focus Event
          • Mouse Event
          • Hover Event
          • Component Area Change Event
          • Component Visible Area Change Event
          • Component Shortcut Event
        • Universal Attributes
          • Size Setting
          • Position Setting
          • Layout Constraints
          • Flex Layout
          • Border Setting
          • Background Setting
          • Opacity Setting
          • Visibility Control
          • Disable Control
          • Overlay
          • Z-Order Control
          • Graphic Transformation
          • Image Effect
          • Shape Clipping
          • Color Gradient
          • Popup Control
          • Menu Control
          • Focus Control
          • Drag and Drop Control
          • Component Identifier
          • Foreground Color Setting
          • Component Content Blur
          • Modal Transition Setting
            • Full-Screen Modal Transition
            • Half-Modal Transition
          • Safe Area
          • Component Content Filling Method
          • Touch hot zone settings
        • Rows, Columns & Stacks
          • Flex
          • Column
          • Row
          • Stack
          • RelativeContainer
        • Grid & Column Layout
          • GridRow
          • GridCol
          • RowSplit
          • SideBarContainer
        • Scrolling & Swiping
          • List
          • ListItem
          • ListItemGroup
          • Grid
          • GridItem
          • Scroll
          • Swiper
          • ScrollBar
          • Refresh
          • Common Scroll Component APIs
        • Navigation & Switching
          • Navigation
          • NavDestination
          • Stepper
          • StepperItem
          • Tabs
          • TabContent
        • Buttons & Pickers
          • Button
          • Toggle
          • Checkbox
          • CheckboxGroup
          • DatePicker
          • TextPicker
          • Radio
          • Rating
          • Select
          • Slider
        • Text and Input
          • Text
          • TextArea
          • TextInput
          • RichEditor
          • Search
          • Span
          • ImageSpan
          • RichText
        • Image and Video
          • Image
          • Video
        • Information Display
          • AlphabetIndexer
          • Badge
          • DataPanel
          • Gauge
          • LoadingProgress
          • PatternLock
          • Progress
          • QRCode
          • TextClock
          • TextTimer
          • Counter
        • Blank and Divider
          • Blank
          • Divider
        • Canvas Drawing
          • Canvas
          • CanvasRenderingContext2D
          • Matrix2D
          • Path2D
          • ImageBitmap
          • ImageData
          • CanvasPattern
        • Graphic Drawing
          • Circle
          • Ellipse
          • Line
          • Path
          • Rect
          • Shape
          • Common Attributes for Graphic Drawing
        • Menu
          • Menu
          • MenuItem
          • MenuItemGroup
        • Animation
          • Property Animation (animation)
          • Page Transition (pageTransition)
          • Component Transition (transition)
          • Shared Element Transition (sharedTransition)
          • Implicit Shared Element Transition within Components (geometryTransition)
        • Dialog
          • Alert Dialog (AlertDialog)
          • Action Sheet (ActionSheet)
          • Custom Dialog (CustomDialog)
        • Web
          • Web
        • Custom Components
          • Lifecycle of Custom Components
        • State Management and Rendering Control
          • ForEach
          • LazyForEach
          • State Management for Component-Level Variables
          • State Management for Application-Level Variables
        • Common Definitions
          • Basic Type Definitions
          • Pixel Units
        • Thread Control
        • Framework Interfaces
      • Error Codes
        • UI Interface
          • Animation Error Codes
        • Graphics
          • Display Error Codes
          • Window Error Codes
    • ArkWeb (Ark Web)
      • Cangjie APIs
        • ohos.webview (Webview)
      • Error Codes
        • Webview Error Codes
    • Core File Kit (Basic File Services)
      • Cangjie APIs
        • ohos.file_fileuri (File URI)
        • ohos.file_fs (File Management)
      • Error Codes
        • File Management Error Codes
    • IPC Kit (Inter-Process Communication Services)
      • Cangjie APIs
        • ohos.rpc (RPC Communication)
      • Error Codes
        • IPC Error Codes
    • Localization Kit (Localization Development Services)
      • Cangjie APIs
        • ohos.i18n (Internationalization-I18n)
        • ohos.resource_manager (Resource Management)
        • ohos.raw_file_descriptor
        • ohos.resource
      • Error Codes
        • I18n Error Codes
        • Resource Management Error Codes
  • System
    • Security
      • Crypto Architecture Kit (Cryptographic Algorithm Framework Service)
        • Cangjie API
          • ohos.crypto (Cryptographic Algorithm Library Framework)
        • Error Codes
          • crypto framework Error Codes
      • Universal Keystore Kit (Key Management Service)
        • Cangjie API
          • ohos.security_huks (Universal Key Store System)
        • Error Codes
          • huks Error Codes
    • Network
      • Connectivity Kit (Short-Range Communication Service)
        • Cangjie API
          • ohos.bluetooth.a2dp (Bluetooth A2DP Module)
          • ohos.bluetooth.ble (Bluetooth BLE Module)
          • ohos.bluetooth.baseProfile (Bluetooth BaseProfile Module)
          • ohos.bluetooth.constant (Bluetooth Constant Module)
          • ohos.bluetooth.hfp (Bluetooth HFP Module)
          • ohos.wifi_manager (WLAN)
        • Error Codes
          • Bluetooth Service Subsystem Error Codes
          • WIFI Error Codes
          • NFC Error Codes
          • SE (SecureElement) Error Codes
      • Network Kit (Network Service)
        • Cangjie API
          • ohos.net.connection (Network Connection Management)
          • ohos.net.http (Data Request)
        • Error Codes
          • HTTP Error Codes
          • Network Connection Management Error Codes
    • Basic Features
      • Basic Services Kit (Basic Services)
        • Cangjie API
          • Device Management
            • ohos.battery_info (Battery Information)
            • ohos.device_info (Device Information)
          • Data File Processing
            • kit.BasicServicesKit.agent (Upload/Download)
          • Process/Thread Communication
            • ohos.common_event_manager (Common Event Module)
          • Others
            • ohos.settings (Settings Data Item Names)
            • ohos.system_date_time (System Time/Timezone)
            • ohos.common_event_subscriber
            • ohos.common_event_subscribe_info
            • ohos.common_event_data
            • ohos.common_event_publish_data
            • ohos.value_type
        • Error Codes
          • Upload/Download Error Codes
          • Time/Timezone Error Codes
          • Event Error Codes
          • System Power Management Error Codes
          • Account Management Error Codes
    • Hardware
      • Sensor Service Kit (Sensor Service)
        • Cangjie API
          • ohos.sensor (Sensors)
        • Error Codes
          • Sensor Error Codes
      • Telephony Kit
        • Cangjie API
          • ohos.telephony.call
    • Debugging & Optimization
      • Performance Analysis Kit (Performance Analysis Service)
        • Cangjie API
          • ohos.hiviewdfx.hi_app_event (Application Event Logging)
          • ohos.hilog (HiLog Logging)
          • ohos.hi_tracemeter (Performance Tracing)
        • Error Codes
          • Application Event Logging Error Codes
          • Hidebug CpuUsage Error Codes
      • Test Kit (Application Testing Service)
        • Cangjie API
          • ohos.ability_delegator_registry (AbilityDelegatorRegistry)
          • ohos.ui_test (UI Testing)
        • Error Codes
          • uitest Error Codes
  • Media
    • Camera Kit (Camera Service)
      • Cangjie APIs
        • ohos.multimedia.camera (Camera Management)
      • Error Codes
        • Camera Error Codes
    • Image Kit (Image Processing Service)
      • Cangjie APIs
        • ohos.multimedia.image (Image Processing)
      • Error Codes
        • Image Error Codes
    • Media Kit (Media Service)
      • Cangjie APIs
        • ohos.multimedia.media (Media Service)
      • Error Codes
        • Media Error Codes
    • Media Library Kit (Media File Management Service)
      • Cangjie APIs
        • ohos.file.photo_access_helper (Photo Album Management Module)
  • Graphics
    • ArkGraphics2D (Ark 2D Graphics Service)
      • Cangjie APIs
        • ohos.color_manager (Color Management)
      • Error Codes
        • Color Management Error Codes
  • Application Services
    • Location Kit (Location Service)
      • Cangjie APIs
        • ohos.geo_location_manager (Location Service)
      • Error Codes
        • Location Service Error Codes
  • Cangjie and ArkTS Interoperability Library
    • ohos.ark_interop (ArkTS Interoperability Library)
      • ArkTS Interoperability Library APIs
      • Error Codes
        • ArkTS Interoperability Library Error Codes
    • ohos.ark_interop_helper (ArkTS Interoperability Common Utility Functions)
    • ohos.ark_interop_macro (ArkTS Interoperability Macros)
    • ohos.business_exception (Common Exception Information)
    • ohos.callback_invoke (Common Callback Information)
  • Cangjie Programming Language Library API

• Learning Cangjie Language

  • First Look at Cangjie Language
  • Basic Concepts
    • Identifiers
    • Program Structure
    • Expressions
    • Functions
  • Basic Data Types
    • Basic Operators
    • Integer Types
    • Floating-Point Types
    • Boolean Type
    • Character Type
    • String Type
    • Tuple Type
    • Array Type
    • Range Type
    • Unit Type
    • Nothing Type
  • Functions
    • Defining Functions
    • Calling Functions
    • Function Types
    • Nested Functions
    • Lambda Expressions
    • Closures
    • Function Call Syntactic Sugar
    • Function Overloading
    • Operator Overloading
    • const Functions and Constant Evaluation
  • Struct Types
    • Defining struct Types
    • Creating struct Instances
    • mut Functions
  • Enum Types and Pattern Matching
    • Enum Types
    • Option Type
    • Pattern Overview
    • Pattern Refutability
    • match Expressions
    • Other Pattern Usage Scenarios
  • Classes and Interfaces
    • Classes
    • Interfaces
    • Properties
    • Subtype Relationships
    • Type Casting
  • Generics
    • Generics Overview
    • Generic Functions
    • Generic Interfaces
    • Generic Classes
    • Generic Structs
    • Generic Enums
    • Subtype Relationships of Generic Types
    • Type Aliases
    • Generic Constraints
  • Extensions
    • Extensions Overview
    • Direct Extensions
    • Interface Extensions
    • Access Rules
  • Collection Types
    • Basic Collection Types Overview
    • ArrayList
    • HashSet
    • HashMap
    • Iterable and Collections
  • Packages
    • Packages Overview
    • Package Declaration
    • Top-Level Declaration Visibility
    • Package Import
    • Program Entry
  • Exception Handling
    • Defining Exceptions
    • throw and Handling Exceptions
    • Common Runtime Exceptions
    • Using Option
  • Concurrency Programming
    • Concurrency Overview
    • Creating Threads
    • Accessing Threads
    • Terminating Threads
    • Synchronization Mechanisms
    • Thread Sleep for Specified Duration sleep
  • Basic I/O Operations
    • I/O Stream Overview
    • I/O Node Streams
    • I/O Processing Streams
  • Network Programming
    • Network Programming Overview
    • Socket Programming
    • HTTP Programming
    • WebSocket Programming
  • Macros
    • Introduction to Macros
    • Token Types and Quote Expressions
    • Syntax Nodes
    • Macro Implementation
    • Compilation, Error Reporting and Debugging
    • Macro Package Definition and Import
    • Built-in Compilation Flags
    • Practical Cases
  • Reflection and Annotations
    • Dynamic Features
    • Annotations
  • Cross-language Interoperability
    • Cangjie-C Interoperability
    • Cangjie-ArkTS Interoperability
      • Introduction to Interoperability
        • Building Your First Cangjie-ArkTS Hybrid Application
        • Incremental Cangjie Usage in Existing ArkTS Projects
      • Overview
      • Scenarios
        • Using Cangjie in ArkTS Applications
          • Adding Cangjie Pages
          • Adding Cangjie Modules
        • Using ArkTS in Cangjie Applications
      • Interoperability Methods
        • ArkTS Calling Cangjie
          • Implementing Interoperability Code on Cangjie Side
            • Declarative Interoperability Macros
            • Interoperability Library
          • Using Interoperability Code on ArkTS Side
        • Cangjie Calling ArkTS
          • Preparing ArkTS Modules for Interoperability
          • Calling Interoperability Code on Cangjie Side
          • Import ArkTS Modules in Cangjie
      • Interoperability Usage Examples
        • Cangjie Accessing ArkTS Data
        • ArkTS Accessing Cangjie Data
        • Using Interoperability in Cangjie Multithreading
        • Cangjie Calling ArkTS Third-Party Modules
        • Lifecycle Development Using the Interop Library
      • Cangjie-ArkTS Interoperability Auxiliary Library
      • Cangjie-ArkTS Interoperability Development Guidelines
  • Compilation and Build
    • cjc Usage
    • cjpm Introduction
    • Conditional Compilation
    • Cross-Compilation
  • Appendix
    • cjc Compilation Options
    • Keywords
    • Operators
    • Operator Functions
    • TokenKind Type