Core File Kit

• About This 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 (for System Applications Only)

  • Sharing an Application File

  • Configuring the Application Shared Directory

  • 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

  • Sharing and Accessing Files Across Devices

  • Copying Files Across Devices

• File Compression and Decompression

  • Compression and Decompression Overview

  • Archive File Compression and Decompression (C/C++)

  • Streaming Compression and Decompression (C/C++)

  • Buffer Compression and Decompression (C/C++)