update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/reference/apis/Readme-EN.md

@@ -237,6 +237,7 @@
   - [@ohos.file.environment (Directory Environment Capability)](js-apis-file-environment.md)
   - [@ohos.file.fileAccess (User File Access and Management)](js-apis-fileAccess.md)
   - [@ohos.file.fileExtensionInfo (User File Extension Information)](js-apis-fileExtensionInfo.md)
+  - [@ohos.file.fileUri (File URI)](js-apis-file-fileUri.md)
   - [@ohos.file.fs (File Management)](js-apis-file-fs.md)
   - [@ohos.file.hash (File Hash Processing)](js-apis-file-hash.md)
   - [@ohos.file.picker (Picker)](js-apis-file-picker.md)
@@ -245,6 +246,7 @@
   - [@ohos.file.storageStatistics (Application Storage Statistics)](js-apis-file-storage-statistics.md)
   - [@ohos.file.volumeManager (Volume Management)](js-apis-file-volumemanager.md)
   - [@ohos.filemanagement.userFileManager (User Data Management)](js-apis-userFileManager.md)
+  - [@ohos.fileShare (File Sharing)](js-apis-fileShare.md)
 
 - Telephony Service
   - [@ohos.contact (Contacts)](js-apis-contact.md)

en/application-dev/reference/apis/js-apis-file-fileUri.md

+# @ohos.file.fileUri (File URI)
+
+The **fileUri** module allows the uniform resource identifier (URI) of a file to be obtained based on the file path. With the file URI, you can use the APIs provided by [@ohos.file.fs](js-apis-file-fs.md) to operate the file.
+
+> **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 fileUri from "@ohos.file.fileUri";
+```
+
+Before using this module, you need to obtain the path of the file in the application sandbox. The following is an example:
+
+ ```js
+import UIAbility from '@ohos.app.ability.UIAbility';
+
+export default class EntryAbility extends UIAbility {
+    onWindowStageCreate(windowStage) {
+        let context = this.context;
+        let pathDir = context.filesDir;
+    }
+}
+ ```
+
+## fileUri.getUriFromPath
+
+getUriFromPath(path: string): string
+
+Obtains the URI of a file in synchronous mode.
+
+**System capability**: SystemCapability.FileManagement.AppFileService
+
+**Parameters**
+
+| Name| Type  | Mandatory| Description                      |
+| ------ | ------ | ---- | -------------------------- |
+| path   | string | Yes  | Path of the file in the application sandbox.|
+
+**Return value**
+
+| Type                          | Description        |
+| ---------------------------- | ---------- |
+| string | File URI obtained.|
+
+**Error codes** 
+
+For details about the error codes, see [File Management Error Codes](../errorcodes/errorcode-filemanagement.md).
+| ID                    | Error Message       |
+| ---------------------------- | ---------- |
+| 401 | The input parameter is invalid |
+
+
+**Example**
+
+  ```js
+let filePath = pathDir + "test.txt";
+let uri = fileUri.getUriFromPath(filePath);
+  ```

en/application-dev/reference/apis/js-apis-fileShare.md

+# @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 = 'datashare:///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 = 'datashare:///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);
+}
+  ```