# @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](js-apis-file-fs.md).

> **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

```js
import fileShare from '@ohos.fileShare';
```

## fileShare.grantUriPermission

grantUriPermission(uri: string, bundleName: string, mode: number, 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.|
| mode   | number | Yes  | Permissions to grant. For details, see [wantConstant.Flags](js-apis-app-ability-wantConstant.md#wantconstantflags).<br>**wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION**: permission to read the file. <br>**wantConstant.Flags.FLAG_AUTH_WRITE_URI_PERMISSION**: permission to write the file.|
| callback | AsyncCallback&lt;void&gt;  | Yes   | Callback invoked to return the result.                            |

**Error codes**

For details about the error codes, see [File Management Error Codes](../errorcodes/errorcode-filemanagement.md).

| 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**

  ```js
import wantConstant from '@ohos.app.ability.wantConstant';


let uri = 'file://media/image/8';
let bundleName = 'com.demo.test';
try {
    fileShare.grantUriPermission(uri, bundleName, wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION | wantConstant.Flags.FLAG_AUTH_WRITE_URI_PERMISSION, (err) => {
        if (err) {
            console.error("grantUriPermission failed with error: " + err);
            return;
        }
        console.info("grantUriPermission success!");
    });
} catch (error) {
    console.error("grantUriPermission failed with error:" + error);
}
  ```


## fileShare.grantUriPermission

grantUriPermission(uri: string, bundleName: string, mode: number): Promise&lt;void&gt;

Grants permissions on a user file by the URI to an application. This API uses a promise 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.|
| mode   | number | Yes  | Permissions to grant. For details, see [wantConstant.Flags](js-apis-app-ability-wantConstant.md#wantconstantflags).<br>**wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION**: permission to read the file. <br>**wantConstant.Flags.FLAG_AUTH_WRITE_URI_PERMISSION**: permission to write the file.|

**Return value**

| Type                          | Description        |
| ---------------------------- | ---------- |
| Promise&lt;void&gt; | Promise that returns no value.|


**Error codes**

For details about the error codes, see [File Management Error Codes](../errorcodes/errorcode-filemanagement.md).

| 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**

  ```js
import wantConstant from '@ohos.app.ability.wantConstant';

let uri = 'file://media/image/8';
let bundleName = 'com.demo.test';
try {
    fileShare.grantUriPermission(uri, bundleName, wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION |
      wantConstant.Flags.FLAG_AUTH_WRITE_URI_PERMISSION).then(function () {
        console.info("grantUriPermission success!");
    }).catch(function (error) {
        console.error("grantUriPermission failed with error:" + error);
    });
} catch (error) {
    console.error("grantUriPermission failed with error:" + error);
}
  ```