update docs

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

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

+# Account Management
+
+- **[Distributed Account Management](js-apis-distributed-account.md)**
+- **[Application Account Management](js-apis-appAccount.md)**

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

+#  	Application Account Management
+
+> ![icon-note.gif](public_sys-resources/icon-note.gif) **Note:**
+> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+
+
+## Modules to Import
+
+```
+import account_appAccount from '@ohos.account.appAccount';
+```
+
+
+## account_appAccount.createAppAccountManager
+
+createAppAccountManager(): AppAccountManager;
+
+Creates an **AppAccountManager** instance.
+
+- Return value
+  | Type| Description|
+  | -------- | -------- |
+  | AppAccountManager | **AppAccountManager** instance created.|
+
+- Example
+  ```
+  var appAccountManager = account.createAppAccountManager();
+  ```
+
+## AppAccountManager
+
+Provides methods to manage application accounts.
+
+### addAccount
+
+addAccount(name: string, callback: AsyncCallback<void>): void;
+
+Adds an application account to the account management service. This method uses an asynchronous callback to return the result.
+
+Required permission: none.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ------------------- | ---- | ------------------------------------------ |
+  | name     | string              | Yes| Name of the application account to add.|
+  | callback | AsyncCallback<void> | Yes| Callback invoked when the application account is added.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.addAccount("WangWu", (err) => { 
+      console.log("addAccount err: " + JSON.stringify(err));
+  });
+  ```
+
+### addAccount
+
+addAccount(name: string, extraInfo: string, callback: AsyncCallback<void>): void;
+
+Adds an application account and its additional information to the account management service. This method uses an asynchronous callback to return the result.
+
+Required permission: none.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | --------- | ------------------- | ---- | ------------------------------------------------------------ |
+  | name      | string              | Yes| Name of the application account to add.|
+  | extraInfo | string              | Yes| Additional information (for example, token) of the application account to add. The additional information cannot contain sensitive information about the application account.|
+  | callback  | AsyncCallback<void> | Yes| Callback invoked when the application account and its additional information are added.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.addAccount("LiSi", "token101", (err) => { 
+      console.log("addAccount err: " + JSON.stringify(err));
+  });
+  ```
+
+
+
+### addAccount
+
+addAccount(name: string, extraInfo?: string): Promise<void>;
+
+Adds an application account and its additional information to the account management service. This method uses a promise to return the result asynchronously.
+
+Required permission: none.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | --------- | ------ | ---- | ------------------------------------------------------------ |
+  | name      | string | Yes| Name of the application account to add.|
+  | extraInfo | string | Yes| Additional information of the application account to add. The additional information cannot contain sensitive information about the application account.|
+
+- Return value
+
+  | Type| Description|
+  | ------------- | ---------------------------------- |
+  | Promise<void> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.addAccount("LiSi", "token101").then(()=> { 
+      console.log('addAccount Success');
+  }).catch((err) => {
+      console.log("addAccount err: "  + JSON.stringify(err));
+  });
+  ```
+
+### deleteAccount
+
+deleteAccount(name: string, callback: AsyncCallback<void>): void;
+
+Deletes an application account from the account management service. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ------------------- | ---- | ---------------------------------- |
+  | name     | string              | Yes| Name of the application account to delete.|
+  | callback | AsyncCallback<void> | Yes| Callback invoked when the application account is deleted.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.deleteAccount("ZhaoLiu", (err) => { 
+      console.log("deleteAccount err: " + JSON.stringify(err));
+   });
+  ```
+
+### deleteAccount
+
+deleteAccount(name: string): Promise<void>;
+
+Deletes an application account from the account management service. This method uses a promise to return the result asynchronously.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ------ | ------ | ---- | ------------------------ |
+  | name   | string | Yes| Name of the application account to delete.|
+
+- Return value
+
+  | Type| Description|
+  | :------------ | :---------------------------------- |
+  | Promise<void> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.deleteAccount("ZhaoLiu").then(() => { 
+        console.log('deleteAccount Success');
+   }).catch((err) => {
+      console.log("deleteAccount err: "  + JSON.stringify(err));
+  });
+  ```
+
+### disableAppAccess
+
+disableAppAccess(name: string, bundleName: string, callback: AsyncCallback<void>): void;
+
+Disables the specified third-party application account from accessing the third-party application with the given bundle name. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ---------- | ------------------- | ---- | ------------------------------------------------------------ |
+  | name       | string              | Yes| Name of the third-party application account.|
+  | bundleName | string              | Yes| Bundle name of the third-party application.|
+  | callback   | AsyncCallback<void> | Yes| Callback invoked when the third-party application account is disabled from accessing the third-party application with the given bundle name.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.disableAppAccess("ZhangSan", "com.huawei.ohos.accountjsdemo", (err) => { 
+      console.log("disableAppAccess err: " + JSON.stringify(err));
+  });
+  ```
+
+### disableAppAccess
+
+disableAppAccess(name: string, bundleName: string): Promise<void>;
+
+Disables the specified third-party application account from accessing the third-party application with the given bundle name. This method uses a promise to return the result asynchronously.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ---------- | ------ | ---- | ---------------------------------- |
+  | name       | string | Yes| Name of the third-party application account.|
+  | bundleName | string | Yes| Bundle name of a third-party application.|
+
+- Return value
+
+  | Type| Description|
+  | :------------ | :---------------------------------- |
+  | Promise<void> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.disableAppAccess("ZhangSan", "com.huawei.ohos.accountjsdemo").then(() => { 
+      console.log('disableAppAccess Success');
+  }).catch((err) => {
+      console.log("disableAppAccess err: "  + JSON.stringify(err));
+  });
+  ```
+
+### enableAppAccess
+
+enableAppAccess(name: string, bundleName: string, callback: AsyncCallback<void>): void;
+
+Enables the specified third-party application account to access the third-party application with the given bundle name. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ---------- | ------------------- | ---- | ------------------------------------------------------------ |
+  | name       | string              | Yes| Application account name.|
+  | bundleName | string              | Yes| Bundle name of the third-party application.|
+  | callback   | AsyncCallback<void> | Yes| Callback invoked when the third-party application account is enabled to access the third-party application with the given bundle name.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.enableAppAccess("ZhangSan", "com.huawei.ohos.accountjsdemo", (err) => { 
+      console.log("enableAppAccess: " + JSON.stringify(err));
+   });
+  ```
+
+### enableAppAccess
+
+enableAppAccess(name: string, bundleName: string): Promise<void>;
+
+Enables the specified third-party application account to access the third-party application with the given bundle name. This method uses a promise to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ---------- | ------ | ---- | ------------------ |
+  | name       | string | Yes| Application account name.|
+  | bundleName | string | Yes| Bundle name of the third-party application.|
+
+- Return value
+
+  | Type| Description|
+  | :------------ | :---------------------------------- |
+  | Promise<void> | Promise used to return the result.|
+
+- Example
+
+  ```
+  app_account_instance.enableAppAccess("ZhangSan", "com.huawei.ohos.accountjsdemo").then(() => { 
+       console.log('enableAppAccess Success');
+  }).catch((err) => {
+      console.log("enableAppAccess err: "  + JSON.stringify(err));
+  });
+  ```
+
+### checkAppAccountSyncEnable
+
+checkAppAccountSyncEnable(name: string, callback: AsyncCallback<boolean>): void;
+
+Checks whether the specified application account allows application data synchronization. This method uses an asynchronous callback to return the result.
+
+The **ohos.permission.DISTRIBUTED_DATASYNC** permission is required. This permission is intended for system applications only.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ---------------------- | ---- | -------------------------------------------- |
+  | name     | string                 | Yes| Application account name.|
+  | callback | AsyncCallback<boolean> | Yes| Callback invoked to specify whether the application account allows application data synchronization.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.checkAppAccountSyncEnable("ZhangSan", (err, result) => { 
+      console.log("checkAppAccountSyncEnable err: " + JSON.stringify(err));
+      console.log('checkAppAccountSyncEnable result: ' + result);
+  });
+  ```
+
+### checkAppAccountSyncEnable
+
+checkAppAccountSyncEnable(name: string): Promise<boolean>;
+
+Checks whether the specified application account allows application data synchronization. This method uses a promise to return the result asynchronously.
+
+The **ohos.permission.DISTRIBUTED_DATASYNC** permission is required. This permission is intended for system applications only.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ------ | ------ | ---- | -------------- |
+  | name   | string | Yes| Application account name.|
+
+- Return value
+
+  | Type| Description|
+  | :--------------- | :---------------------------------- |
+  | Promise<boolean> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.checkAppAccountSyncEnable("ZhangSan").then((data) => { 
+      console.log('checkAppAccountSyncEnable, result: ' + data);
+  }).catch((err) => {
+      console.log("checkAppAccountSyncEnable err: "  + JSON.stringify(err));
+  });
+  ```
+
+### setAccountCredential
+
+setAccountCredential(name: string, credentialType: string, credential: string,callback: AsyncCallback<void>): void;
+
+Sets a credential for an application account. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------------- | ------------------- | ---- | ---------------------------- |
+  | name           | string              | Yes| Application account name.|
+  | credentialType | string              | Yes| Type of the credential to set.|
+  | credential     | string              | Yes| Credential to set.|
+  | callback       | AsyncCallback<void> | Yes| Callback invoked when a credential is set for the specified application account.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.setAccountCredential("ZhangSan", "credentialType001", "credential001", (err) => { 
+      console.log("setAccountCredential err: " + JSON.stringify(err));
+  });
+  ```
+
+### setAccountCredential
+
+setAccountCredential(name: string, credentialType: string, credential: string): Promise<void>;
+
+Sets a credential for an application account. This method uses a promise to return the result asynchronously.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------------- | ------ | ---- | -------------------- |
+  | name           | string | Yes| Application account name.|
+  | credentialType | string | Yes| Type of the credential to set.|
+  | credential     | string | Yes| Credential to set.|
+
+- Return value
+
+  | Type| Description|
+  | :------------ | :---------------------------------- |
+  | Promise<void> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.setAccountCredential("ZhangSan", "credentialType001", "credential001").then(() => { 
+      console.log('setAccountCredential Success');
+  }).catch((err) => {
+      console.log("setAccountCredential err: "  + JSON.stringify(err));
+  });
+  ```
+
+### setAccountExtraInfo
+
+setAccountExtraInfo(name: string, extraInfo: string, callback: AsyncCallback<void>): void;
+
+Sets additional information for an application account. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | --------- | ------------------- | ---- | -------------------------------- |
+  | name      | string              | Yes| Application account name.|
+  | extraInfo | string              | Yes| Additional information to set.|
+  | callback  | AsyncCallback<void> | Yes| Callback invoked when additional information is set for the specified application account.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.setAccountExtraInfo("ZhangSan", "Tk002", (err) => { 
+      console.log("setAccountExtraInfo err: " + JSON.stringify(err));
+  });
+  ```
+
+### setAccountExtraInfo
+
+setAccountExtraInfo(name: string, extraInfo: string): Promise<void>;
+
+Sets additional information for an application account. This method uses a promise to return the result asynchronously.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | --------- | ------ | ---- | ------------------ |
+  | name      | string | Yes| Application account name.|
+  | extraInfo | string | Yes| Additional information to set.|
+
+- Return value
+
+  | Type| Description|
+  | :------------ | :---------------------------------- |
+  | Promise<void> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.setAccountExtraInfo("ZhangSan", "Tk002").then(() => { 
+      console.log('setAccountExtraInfo Success');
+  }).catch((err) => {
+      console.log("setAccountExtraInfo err: "  + JSON.stringify(err));
+  });
+  ```
+
+### setAppAccountSyncEnable
+
+setAppAccountSyncEnable(name: string, isEnable: boolean, callback: AsyncCallback<void>): void;
+
+Sets whether to enable application data synchronization for an application account. This method uses an asynchronous callback to return the result.
+
+The **ohos.permission.DISTRIBUTED_DATASYNC** permission is required. This permission is intended for system applications only.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ------------------- | ---- | -------------------------------------------------- |
+  | name     | string              | Yes| Application account name.|
+  | isEnable | boolean             | Yes| Specifies whether to enable application data synchronization.|
+  | callback | AsyncCallback<void> | Yes| Callback invoked when application data synchronization is enabled or disabled for the application account.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.setAppAccountSyncEnable("ZhangSan", true, (err) => { 
+      console.log("setAppAccountSyncEnable err: " + JSON.stringify(err));
+  });
+  ```
+
+### setAppAccountSyncEnable
+
+setAppAccountSyncEnable(name: string, isEnable: boolean): Promise<void>;
+
+Sets whether to enable application data synchronization for an application account. This method uses a promise to return the result asynchronously.
+
+The **ohos.permission.DISTRIBUTED_DATASYNC** permission is required. This permission is intended for system applications only.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ------- | ---- | ---------------------- |
+  | name     | string  | Yes| Application account name.|
+  | isEnable | boolean | Yes| Specifies whether to enable application data synchronization.|
+
+- Return value
+
+  | Type| Description|
+  | :------------ | :---------------------------------- |
+  | Promise<void> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager .setAppAccountSyncEnable("ZhangSan", true).then(() => { 
+      console.log('setAppAccountSyncEnable Success');
+  }).catch((err) => {
+      console.log("setAppAccountSyncEnable err: "  + JSON.stringify(err));
+  });
+  ```
+
+### setAssociatedData
+
+setAssociatedData(name: string, key: string, value: string, callback: AsyncCallback<void>): void;
+
+Sets data to be associated with an application account. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ------------------- | ---- | ---------------------------------- |
+  | name     | string              | Yes| Application account name.|
+  | key      | string              | Yes| Key of the data to set. The private key can be customized.|
+  | value    | string              | Yes| Value of the data to be set.|
+  | callback | AsyncCallback<void> | Yes| Callback invoked when the data associated with the specified application account is set.|
+
+- Example
+
+  ```
+  app_account_instance.setAssociatedData("ZhangSan", "k001", "v001", (err) => { 
+      console.log("setAssociatedData err: " + JSON.stringify(err));
+  });
+  ```
+
+### setAssociatedData
+
+setAssociatedData(name: string, key: string, value: string): Promise<void>;
+
+Sets data to be associated with an application account. This method uses a promise to return the result asynchronously.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ------ | ------ | ---- | ---------------------------------- |
+  | name   | string | Yes| Application account name.|
+  | key    | string | Yes| Key of the data to set. The private key can be customized.|
+  | value  | string | Yes| Value of the data to be set.|
+
+- Return value
+
+  | Type| Description|
+  | :------------ | :---------------------------------- |
+  | Promise<void> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.setAssociatedData("ZhangSan", "k001", "v001").then(() => { 
+      console.log('setAssociatedData Success');
+  }).catch((err) => {
+      console.log("setAssociatedData err: "  + JSON.stringify(err));
+  });
+  ```
+
+### getAccountCredential
+
+getAccountCredential(name: string, credentialType: string, callback: AsyncCallback<string>): void;
+
+Obtains the credential of an application account. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------------- | --------------------- | ---- | ---------------------------- |
+  | name           | string                | Yes| Application account name.|
+  | credentialType | string                | Yes| Type of the credential to obtain.|
+  | callback       | AsyncCallback<string> | Yes| Callback invoked to return the credential of the specified application account.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.getAccountCredential("ZhangSan", "credentialType001", (err, result) => { 
+      console.log("getAccountCredential err: " + JSON.stringify(err));
+      console.log('getAccountCredential result: ' + result);
+  });
+  ```
+
+### getAccountCredential
+
+getAccountCredential(name: string, credentialType: string): Promise<string>;
+
+Obtains the credential of an application account. This method uses a promise to return the result asynchronously.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------------- | ------ | ---- | -------------------- |
+  | name           | string | Yes| Application account name.|
+  | credentialType | string | Yes| Type of the credential to obtain.|
+
+- Return value
+
+  | Type| Description|
+  | :-------------- | :---------------------------------- |
+  | Promise<string> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.getAccountCredential("ZhangSan", "credentialType001").then((data) => { 
+      console.log('getAccountCredential, result: ' + data);
+  }).catch((err) => {
+      console.log("getAccountCredential err: "  + JSON.stringify(err));
+  });
+  ```
+
+### getAccountExtraInfo
+
+getAccountExtraInfo(name: string, callback: AsyncCallback<string>): void;
+
+Obtains additional information of an application account. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | --------------------- | ---- | -------------------------------- |
+  | name     | string                | Yes| Application account name.|
+  | callback | AsyncCallback<string> | Yes| Callback invoked to return the additional information of the specified application account.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.getAccountExtraInfo("ZhangSan", (err, result) => { 
+      console.log("getAccountExtraInfo err: " + JSON.stringify(err));
+      console.log('getAccountExtraInfo result: ' + result);
+  });
+  ```
+
+### getAccountExtraInfo
+
+getAccountExtraInfo(name: string): Promise<string>;
+
+Obtains additional information of an application account. This method uses a promise to return the result asynchronously.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ------ | ------ | ---- | -------------- |
+  | name   | string | Yes| Application account name.|
+
+- Return value
+
+  | Type| Description|
+  | :-------------- | :---------------------------------- |
+  | Promise<string> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.getAccountExtraInfo("ZhangSan").then((data) => { 
+      console.log('getAccountExtraInfo, result: ' + data);
+  }).catch((err) => {
+      console.log("getAccountExtraInfo err: "  + JSON.stringify(err));
+  });
+  ```
+
+### getAssociatedData
+
+getAssociatedData(name: string, key: string, callback: AsyncCallback<string>): void;
+
+Obtains data associated with an application account. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | --------------------- | ---- | ---------------------------------- |
+  | name     | string                | Yes| Application account name.|
+  | key      | string                | Yes| Key of the data to be obtained.|
+  | callback | AsyncCallback<string> | Yes| Callback invoked to return the data associated with the specified application account.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.getAssociatedData("ZhangSan", "k001", (err, result) => { 
+      console.log("getAssociatedData err: " + JSON.stringify(err));
+      console.log('getAssociatedData result: ' + result);
+  });
+  ```
+
+### getAssociatedData
+
+getAssociatedData(name: string, key: string): Promise<string>;
+
+Obtains data associated with an application account. This method uses a promise to return the result asynchronously.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ------ | ------ | ---- | ------------------- |
+  | name   | string | Yes| Application account name.|
+  | key    | string | Yes| Key of the data to obtain.|
+
+- Return value
+
+  | Type| Description|
+  | :-------------- | :---------------------------------- |
+  | Promise<string> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.getAssociatedData("ZhangSan", "k001").then((data) => { 
+       console.log('getAssociatedData: ' + data);
+  }).catch((err) => {
+      console.log("getAssociatedData err: "  + JSON.stringify(err));
+  });
+  ```
+
+### getAllAccessibleAccounts
+
+getAllAccessibleAccounts(callback: AsyncCallback<Array<AppAccountInfo>>): void;
+
+Obtains information about all accessible accounts. This method uses an asynchronous callback to return the result.
+
+The **ohos.permission.GET_ACCOUNTS_PRIVILEGED** permission is required. This permission is intended for system applications only.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ------------------------------------ | ---- | ---------------- |
+  | callback | AsyncCallback<Array<AppAccountInfo>> | Yes| Callback invoked to return information about all accessible accounts.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.getAllAccessibleAccounts((err, data)=>{
+  	console.debug("getAllAccessibleAccounts err:" + JSON.stringify(err));
+  	console.debug("getAllAccessibleAccounts data:" + JSON.stringify(data));
+  });
+  ```
+
+### getAllAccessibleAccounts
+
+getAllAccessibleAccounts(): Promise<Array<AppAccountInfo>>;
+
+Obtains information about all accessible accounts. This method uses a promise to return the result.
+
+The **ohos.permission.GET_ACCOUNTS_PRIVILEGED** permission is required. This permission is intended for system applications only.
+
+- Parameters
+
+  | Type| Description|
+  | ------------------------------ | ----------------------------------- |
+  | Promise<Array<AppAccountInfo>> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  appAccountManager.getAllAccessibleAccounts().then((data) => { 
+       console.log('getAllAccessibleAccounts: ' + data);
+  }).catch((err) => {
+      console.log("getAllAccessibleAccounts err: "  + JSON.stringify(err));
+  });
+  ```
+
+### getAllAccounts
+
+getAllAccounts(owner: string, callback: AsyncCallback<Array<AppAccountInfo>>): void;
+
+Obtains information about all accounts of the specified account owner. This method uses an asynchronous callback to return the result.
+
+The **ohos.permission.GET_ACCOUNTS_PRIVILEGED** permission is required. This permission is intended for system applications only.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ------------------------------------ | ---- | ---------------- |
+  | owner    | string                               | Yes| Owner of a system application account or third-party application account.|
+  | callback | AsyncCallback<Array<AppAccountInfo>> | Yes| Callback invoked to return information about all accounts of the specified account owner.|
+
+- Example
+
+  ```
+  const appAccountManager = account.createAppAccountManager();
+  const selfBundle = "com.example.actsgetallaaccounts";
+  appAccountManager.getAllAccounts(selfBundle, (err, data)=>{
+  	console.debug("getAllAccounts err:" + JSON.stringify(err));
+  	console.debug("getAllAccounts data:" + JSON.stringify(data));
+  });
+  ```
+
+### getAllAccounts
+
+getAllAccounts(owner: string): Promise<Array<AppAccountInfo>>;
+
+Obtains information about all accounts of the specified account owner. This method uses a promise to return the result.
+
+The **ohos.permission.GET_ACCOUNTS_PRIVILEGED** permission is required. This permission is intended for system applications only.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | ------ | ------ | ---- | ---------- |
+  | owner  | string | Yes| Owner of a system application account or third-party application account.|
+
+- Parameters
+
+  | Type| Description|
+  | ------------------------------ | ----------------------------------- |
+  | Promise<Array<AppAccountInfo>> | Promise used to return the result.|
+
+- Example
+
+  ```
+  const appAccountManager = account_appAccount.createAppAccountManager();
+  const selfBundle = "com.example.actsgetallaaccounts";
+  appAccountManager.getAllAccounts(selfBundle).then((data) => { 
+       console.log('getAllAccounts: ' + data);
+  }).catch((err) => {
+      console.log("getAllAccounts err: "  + JSON.stringify(err));
+  });
+  ```
+
+### on('change')
+
+on(type: 'change', owners: Array<string>, callback: Callback<Array<AppAccountInfo>>): void;
+
+Subscribes to the account change event of the specified account owners. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | ------------------------------- | ---- | ------------------------------------------------------------ |
+  | type     | 'change'                        | Yes| Type of the event to subscribe to. The subscriber will receive a notification when the account owner updates the account.|
+  | owners   | Array<string>                   | Yes| Owners of the account.|
+  | callback | Callback<Array<AppAccountInfo>> | Yes| Callback invoked to return the account change.|
+
+- Example
+
+  ```
+  const appAccountManager = account.createAppAccountManager();
+  function changeOnCallback(data){
+  	console.debug("receive change data:" + JSON.stringify(data));
+  }
+  try{
+  	appAccountManager.on('change', ["com.example.actsaccounttest"], changeOnCallback);
+  }
+  catch(err){
+  	console.error("on accountOnOffDemo err:" + JSON.stringify(err));
+  }
+  ```
+
+### off('change')
+
+off(type: 'change', callback?: Callback<void>): void;
+
+Unsubscribes from the account change event. This method uses an asynchronous callback to return the result.
+
+- Parameters
+
+  | Name| Type| Mandatory| Description|
+  | -------- | -------------------- | ---- | ------------------------ |
+  | type     | 'change'             | Yes| Account change event.|
+  | callback | Callback<void> | No| Callback used to report the account change.|
+
+- Example
+
+  ```
+  const appAccountManager = account.createAppAccountManager();
+  function changeOnCallback(data){
+  	console.debug("receive change data:" + JSON.stringify(data));
+  	appAccountManager.off('change', function(){
+  		console.debug("off finish");
+  	}
+  }
+  try{
+  	appAccountManager.on('change', ["com.example.actsaccounttest"], changeOnCallback);
+  }
+  catch(err){
+  	console.error("on accountOnOffDemo err:" + JSON.stringify(err));
+  }
+  ```
+
+## AppAccountInfo
+
+
+
+| Name| Type| Mandatory| Description|
+| ------ | ------ | ---- | ------------------ |
+| owner  | string | Yes| Owner of an application account.|
+| name   | string | Yes| Name of an application account.|