harmony 鸿蒙@ohos.fileshare (File Sharing)

2023-06-24
浏览 (611)

@ohos.fileshare (File Sharing)

The fileShare module provides APIs for granting the access permissions on a user file to another application by the Uniform Resource Identifier (URI). Then, the authorized application can access the file by using the APIs provided by @ohos.file.fs.

NOTE

The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import fileShare from '@ohos.fileshare';

fileShare.grantUriPermission

grantUriPermission(uri: string, bundleName: string, flag: wantConstant.Flags, callback: AsyncCallback<void>): void

Grants permissions on a user file by the URI to an application. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.WRITE_MEDIA

System API: This is a system API.

System capability: SystemCapability.FileManagement.AppFileService

Parameters

Name	Type	Mandatory	Description
uri	string	Yes	URI of a user file.
bundleName	string	Yes	Bundle name of the application to be grated with the permissions.
flag	wantConstant.Flags	Yes	Permissions to grant. For details, see wantConstant.Flags. wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION: permission to read the file. wantConstant.Flags.FLAG_AUTH_WRITE_URI_PERMISSION: permission to write the file.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see File Management Error Codes.

ID	Error Message
201	Permission verification failed
202	The caller is not a system application
401	The input parameter is invalid
143000001	IPC error

Example

  import wantConstant from '@ohos.app.ability.wantConstant';
  import { BusinessError } from '@ohos.base';
  let uri: string = 'file://media/image/8';
  let bundleName: string = 'com.demo.test';
  try {
    fileShare.grantUriPermission(uri, bundleName, wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION|
      wantConstant.Flags.FLAG_AUTH_WRITE_URI_PERMISSION, (err: BusinessError) => {
      if (err) {
        console.error("grantUriPermission failed with error: " + JSON.stringify(err));
        return;
      }
      console.info("grantUriPermission success!");
    });
  } catch (err) {
    let error: BusinessError = err as BusinessError;
    console.error("grantUriPermission failed with error:" + JSON.stringify(error));
  }