@ohos.update (Update)

The update module implements update of the entire system, including built-in resources and preset applications, but not third-party applications.

There are two types of updates: SD card update and over the air (OTA) update.

• The SD card update depends on the update packages and SD cards.

• The OTA update depends on the server deployed by the device manufacturer for managing update packages. The OTA server IP address is passed by the caller. The request interface is fixed and developed by the device manufacturer.

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.

The APIs provided by this module are system APIs.

Modules to Import

import update from '@ohos.update'

update.getOnlineUpdater

getOnlineUpdater(upgradeInfo: UpgradeInfo): Updater

Obtains an OnlineUpdater object.

System capability: SystemCapability.Update.UpdateService

Parameters

Name	Type	Mandatory	Description
upgradeInfo	UpgradeInfo	Yes	OnlineUpdater object information.

Return value

Type	Description
Updater	OnlineUpdater object.

Example

try {
      const upgradeInfo: update.UpgradeInfo = {
        upgradeApp: "com.ohos.ota.updateclient",
        businessType: {
          vendor: update.BusinessVendor.PUBLIC,
          subType: update.BusinessSubType.FIRMWARE
        }
      };
      let updater = update.getOnlineUpdater(upgradeInfo);
    } catch(error) {
      console.error(`Fail to get updater error: ${error}`);
    }

update.getRestorer

getRestorer(): Restorer

Obtains a Restorer object for restoring factory settings.

System capability: SystemCapability.Update.UpdateService

Return value

Type	Description
Restorer	Restorer object for restoring factory settings.

Example

try {
  let restorer = update.getRestorer();
} catch(error) {
  console.error(`Fail to get restorer: ${error}`);
}

update.getLocalUpdater

getLocalUpdater(): LocalUpdater

Obtains a LocalUpdater object.

System capability: SystemCapability.Update.UpdateService

Return value

Type	Description
LocalUpdater	LocalUpdater object.

Example

try {
  let localUpdater = update.getLocalUpdater();
} catch(error) {
  console.error(`Fail to get localUpdater error: ${error}`);
};

Updater

checkNewVersion

checkNewVersion(callback: AsyncCallback<CheckResult>): void

Checks whether a new version is available. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<CheckResult>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.checkNewVersion((err: BusinessError, result: update.CheckResult) => {
      console.log(`checkNewVersion isExistNewVersion  ${result?.isExistNewVersion}`);
    });

checkNewVersion

checkNewVersion(): Promise<CheckResult>

Checks whether a new version is available. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Return value

Type	Description
Promise<CheckResult>	Promise used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.checkNewVersion()
      .then((result: update.CheckResult) => {
        console.log(`checkNewVersion isExistNewVersion: ${result.isExistNewVersion}`);
        // Version digest information
        console.log(`checkNewVersion versionDigestInfo: ${result.newVersionInfo.versionDigestInfo.versionDigest}`);
      })
      .catch((err: BusinessError)=>{
        console.log(`checkNewVersion promise error ${JSON.stringify(err)}`);
      })

getNewVersionInfo

getNewVersionInfo(callback: AsyncCallback<NewVersionInfo>): void

Obtains information about the new version. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<NewVersionInfo>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.getNewVersionInfo((err: BusinessError, info: update.NewVersionInfo) => {
      console.log(`info displayVersion = ${info?.versionComponents[0].displayVersion}`);
      console.log(`info innerVersion = ${info?.versionComponents[0].innerVersion}`);
});

getNewVersionInfo

getNewVersionInfo(): Promise<NewVersionInfo>

Obtains information about the new version. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Return value

Type	Description
Promise<NewVersionInfo>	Promise used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.getNewVersionInfo().then((info: update.NewVersionInfo) => {
    console.log(`info displayVersion = ${info.versionComponents[0].displayVersion}`);
    console.log(`info innerVersion = ${info.versionComponents[0].innerVersion}`);
}).catch((err: BusinessError) => {
    console.log(`getNewVersionInfo promise error ${JSON.stringify(err)}`);
});

getNewVersionDescription

getNewVersionDescription(versionDigestInfo: VersionDigestInfo, descriptionOptions: DescriptionOptions, callback: AsyncCallback<Array<ComponentDescription>>): void

Obtains the description file of the new version. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
descriptionOptions	DescriptionOptions	Yes	Options of the description file.
callback	AsyncCallback<Array<ComponentDescription>>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Options of the description file
const descriptionOptions: update.DescriptionOptions = {
  format: update.DescriptionFormat.STANDARD, // Standard format
  language: "zh-cn" // Chinese
};

updater.getNewVersionDescription(versionDigestInfo, descriptionOptions).then((info: Array<update.ComponentDescription>)=> {
  console.log(`getNewVersionDescription promise info ${JSON.stringify(info)}`);
}).catch((err: BusinessError) => {
  console.log(`getNewVersionDescription promise error ${JSON.stringify(err)}`);
});

getNewVersionDescription

getNewVersionDescription(versionDigestInfo: VersionDigestInfo, descriptionOptions: DescriptionOptions): Promise<Array<ComponentDescription>>;

Obtains the description file of the new version. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
descriptionOptions	DescriptionOptions	Yes	Options of the description file.

Return value

Type	Description
Promise<Array<ComponentDescription>>	Promise used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Options of the description file
const descriptionOptions: update.DescriptionOptions = {
  format: update.DescriptionFormat.STANDARD, // Standard format
  language: "zh-cn" // Chinese
};

updater.getNewVersionDescription(versionDigestInfo, descriptionOptions).then((info: Array<update.ComponentDescription>)=> {
  console.log(`getNewVersionDescription promise info ${JSON.stringify(info)}`);
}).catch((err: BusinessError) => {
  console.log(`getNewVersionDescription promise error ${JSON.stringify(err)}`);
});

getCurrentVersionInfo

getCurrentVersionInfo(callback: AsyncCallback<CurrentVersionInfo>): void

Obtains information about the current version. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<CurrentVersionInfo>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.getCurrentVersionInfo((err: BusinessError, info: update.CurrentVersionInfo) => {
  console.log(`info osVersion = ${info?.osVersion}`);
  console.log(`info deviceName = ${info?.deviceName}`);
  console.log(`info displayVersion = ${info?.versionComponents[0].displayVersion}`);
});

getCurrentVersionInfo

getCurrentVersionInfo(): Promise<CurrentVersionInfo>

Obtains information about the current version. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Return value

Type	Description
Promise<CurrentVersionInfo>	Promise used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.getCurrentVersionInfo().then((info: update.CurrentVersionInfo) => {
  console.log(`info osVersion = ${info.osVersion}`);
  console.log(`info deviceName = ${info.deviceName}`);
  console.log(`info displayVersion = ${info.versionComponents[0].displayVersion}`);
}).catch((err: BusinessError) => {
  console.log(`getCurrentVersionInfo promise error ${JSON.stringify(err)}`);
});

getCurrentVersionDescription

getCurrentVersionDescription(descriptionOptions: DescriptionOptions, callback: AsyncCallback<Array<ComponentDescription>>): void

Obtains the description file of the current version. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
descriptionOptions	DescriptionOptions	Yes	Options of the description file.
callback	AsyncCallback<Array<ComponentDescription>>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

// Options of the description file
const descriptionOptions: update.DescriptionOptions = {
  format: update.DescriptionFormat.STANDARD, // Standard format
  language: "zh-cn" // Chinese
};

updater.getCurrentVersionDescription(descriptionOptions, (err, info) => {
  console.log(`getCurrentVersionDescription info ${JSON.stringify(info)}`);
  console.log(`getCurrentVersionDescription err ${JSON.stringify(err)}`);
});

getCurrentVersionDescription

getCurrentVersionDescription(descriptionOptions: DescriptionOptions): Promise<Array<ComponentDescription>>

Obtains the description file of the current version. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
descriptionOptions	DescriptionOptions	Yes	Options of the description file.

Return value

Type	Description
Promise<Array<ComponentDescription>>	Promise used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Options of the description file
const descriptionOptions: update.DescriptionOptions = {
  format: update.DescriptionFormat.STANDARD, // Standard format
  language: "zh-cn" // Chinese
};
updater.getCurrentVersionDescription(descriptionOptions).then((info: Array<update.ComponentDescription>) => {
  console.log(`getCurrentVersionDescription promise info ${JSON.stringify(info)}`);
}).catch((err: BusinessError) => {
  console.log(`getCurrentVersionDescription promise error ${JSON.stringify(err)}`);
});

getTaskInfo

getTaskInfo(callback: AsyncCallback<TaskInfo>): void

Obtains information about the update task. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<TaskInfo>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.getTaskInfo((err: BusinessError, info: update.TaskInfo) => {
  console.log(`getTaskInfo isexistTask= ${info?.existTask}`);
});

getTaskInfo

getTaskInfo(): Promise<TaskInfo>

Obtains information about the update task. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Return value

Type	Description
Promise<TaskInfo>	Promise used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.getTaskInfo().then((info: update.TaskInfo) => {
  console.log(`getTaskInfo isexistTask= ${info.existTask}`);
}).catch((err: BusinessError) => {
  console.log(`getTaskInfo promise error ${JSON.stringify(err)}`);
});

download

download(versionDigestInfo: VersionDigestInfo, downloadOptions: DownloadOptions, callback: AsyncCallback<void>): void

Downloads the new version. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
downloadOptions	DownloadOptions	Yes	Download options.
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the operation is successful, err is undefined; otherwise, err is an Error object.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Download options
const downloadOptions: update.DownloadOptions = {
  allowNetwork: update.NetType.CELLULAR, // Whether to allow download over data network
  order: update.Order.DOWNLOAD // Download
};
updater.download(versionDigestInfo, downloadOptions, (err: BusinessError) => {
  console.log(`download error ${JSON.stringify(err)}`);
});

download

download(versionDigestInfo: VersionDigestInfo, downloadOptions: DownloadOptions): Promise<void>

Downloads the new version. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
downloadOptions	DownloadOptions	Yes	Download options.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Download options
const downloadOptions: update.DownloadOptions = {
  allowNetwork: update.NetType.CELLULAR, // Whether to allow download over data network
   order: update.Order.DOWNLOAD // Download
};
updater.download(versionDigestInfo, downloadOptions).then(() => {
  console.log(`download start`);
}).catch((err: BusinessError) => {
  console.log(`download error ${JSON.stringify(err)}`);
});

resumeDownload

resumeDownload(versionDigestInfo: VersionDigestInfo, resumeDownloadOptions: ResumeDownloadOptions, callback: AsyncCallback<void>): void

Resumes download of the new version. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
resumeDownloadOptions	ResumeDownloadOptions	Yes	Options for resuming download.
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the operation is successful, err is undefined; otherwise, err is an Error object.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo : update.VersionDigestInfo= {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Options for resuming download
const resumeDownloadOptions : update.ResumeDownloadOptions= {
  allowNetwork: update.NetType.CELLULAR, // Whether to allow download over data network
};
updater.resumeDownload(versionDigestInfo, resumeDownloadOptions, (err: BusinessError) => {
  console.log(`resumeDownload error ${JSON.stringify(err)}`);
});

resumeDownload

resumeDownload(versionDigestInfo: VersionDigestInfo, resumeDownloadOptions: ResumeDownloadOptions): Promise<void>

Resumes download of the new version. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
resumeDownloadOptions	ResumeDownloadOptions	Yes	Options for resuming download.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Options for resuming download
const resumeDownloadOptions: update.ResumeDownloadOptions = {
  allowNetwork: update.NetType.CELLULAR, // Whether to allow download over data network
};
updater.resumeDownload(versionDigestInfo, resumeDownloadOptions).then(() => {
  console.log(`resumeDownload start`);
}).catch((err: BusinessError) => {
  console.log(`resumeDownload error ${JSON.stringify(err)}`);
});

pauseDownload

pauseDownload(versionDigestInfo: VersionDigestInfo, pauseDownloadOptions: PauseDownloadOptions, callback: AsyncCallback<void>): void

Pauses download of the new version. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
pauseDownloadOptions	PauseDownloadOptions	Yes	Options for pausing download.
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the operation is successful, err is undefined; otherwise, err is an Error object.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Options for pausing download
const pauseDownloadOptions: update.PauseDownloadOptions = {
  isAllowAutoResume: true // Whether to allow automatic resuming of download
};
updater.pauseDownload(versionDigestInfo, pauseDownloadOptions, (err: BusinessError) => {
  console.log(`pauseDownload error ${JSON.stringify(err)}`);
});

pauseDownload

pauseDownload(versionDigestInfo: VersionDigestInfo, pauseDownloadOptions: PauseDownloadOptions): Promise<void>

Resumes download of the new version. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
pauseDownloadOptions	PauseDownloadOptions	Yes	Options for pausing download.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Options for pausing download
const pauseDownloadOptions: update.PauseDownloadOptions = {
  isAllowAutoResume: true // Whether to allow automatic resuming of download
};
updater.pauseDownload(versionDigestInfo, pauseDownloadOptions).then(() => {
  console.log(`pauseDownload`);
}).catch((err: BusinessError)  => {
  console.log(`pauseDownload error ${JSON.stringify(err)}`);
});

upgrade

upgrade(versionDigestInfo: VersionDigestInfo, upgradeOptions: UpgradeOptions, callback: AsyncCallback<void>): void

Updates the version. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
upgradeOptions	UpgradeOptions	Yes	Update options.
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the operation is successful, err is undefined; otherwise, err is an Error object.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Installation options
const upgradeOptions: update.UpgradeOptions = {
  order: update.Order.INSTALL // Installation command
};
updater.upgrade(versionDigestInfo, upgradeOptions, (err: BusinessError) => {
  console.log(`upgrade error ${JSON.stringify(err)}`);
});

upgrade

upgrade(versionDigestInfo: VersionDigestInfo, upgradeOptions: UpgradeOptions): Promise<void>

Updates the version. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
upgradeOptions	UpgradeOptions	Yes	Update options.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Installation options
const upgradeOptions: update.UpgradeOptions = {
  order: update.Order.INSTALL // Installation command
};
updater.upgrade(versionDigestInfo, upgradeOptions).then(() => {
  console.log(`upgrade start`);
}).catch((err: BusinessError) => {
  console.log(`upgrade error ${JSON.stringify(err)}`);
});

clearError

clearError(versionDigestInfo: VersionDigestInfo, clearOptions: ClearOptions, callback: AsyncCallback<void>): void

Clears errors. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
clearOptions	ClearOptions	Yes	Clear options.
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the operation is successful, err is undefined; otherwise, err is an Error object.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Options for clearing errors
const clearOptions: update.ClearOptions = {
  status: update.UpgradeStatus.UPGRADE_FAIL,
};
updater.clearError(versionDigestInfo, clearOptions, (err: BusinessError) => {
  console.log(`clearError error ${JSON.stringify(err)}`);
});

clearError

clearError(versionDigestInfo: VersionDigestInfo, clearOptions: ClearOptions): Promise<void>

Clears errors. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
clearOptions	ClearOptions	Yes	Update options.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

// Version digest information
const versionDigestInfo: update.VersionDigestInfo = {
  versionDigest: "versionDigest" // Version digest information in the check result
};

// Options for clearing errors
const clearOptions: update.ClearOptions = {
  status: update.UpgradeStatus.UPGRADE_FAIL,
};
updater.clearError(versionDigestInfo, clearOptions).then(() => {
  console.log(`clearError success`);
}).catch((err: BusinessError) => {
  console.log(`clearError error ${JSON.stringify(err)}`);
});

getUpgradePolicy

getUpgradePolicy(callback: AsyncCallback<UpgradePolicy>): void

Obtains the update policy. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<UpgradePolicy>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.getUpgradePolicy(err: BusinessError, policy: update.UpgradePolicy) => {
  console.log(`policy downloadStrategy = ${policy?.downloadStrategy}`);
  console.log(`policy autoUpgradeStrategy = ${policy?.autoUpgradeStrategy}`);
});

getUpgradePolicy

getUpgradePolicy(): Promise<UpgradePolicy>

Obtains the update policy. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Return value

Type	Description
Promise<UpgradePolicy>	Promise used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.getUpgradePolicy().then((policy: update.UpgradePolicy) => {
  console.log(`policy downloadStrategy = ${policy.downloadStrategy}`);
  console.log(`policy autoUpgradeStrategy = ${policy.autoUpgradeStrategy}`);
}).catch((err: BusinessError)  => {
  console.log(`getUpgradePolicy promise error ${JSON.stringify(err)}`);
});

setUpgradePolicy

setUpgradePolicy(policy: UpgradePolicy, callback: AsyncCallback<void>): void

Sets the update policy. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
policy	UpgradePolicy	Yes	Update policy.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

const policy: update.UpgradePolicy = {
  downloadStrategy: false,
  autoUpgradeStrategy: false,
  autoUpgradePeriods: [ { start: 120, end: 240 }] // Automatic update period, in minutes
};
updater.setUpgradePolicy(policy, (err: BusinessError) => {
  console.log(`setUpgradePolicy result: ${err}`);
});

setUpgradePolicy

setUpgradePolicy(policy: UpgradePolicy): Promise<void>

Sets the update policy. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
policy	UpgradePolicy	Yes	Update policy.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

const policy: update.UpgradePolicy = {
  downloadStrategy: false,
  autoUpgradeStrategy: false,
  autoUpgradePeriods: [ { start: 120, end: 240 }] // Automatic update period, in minutes
};
updater.setUpgradePolicy(policy).then(() => {
  console.log(`setUpgradePolicy success`);
}).catch((err: BusinessError) => {
  console.log(`setUpgradePolicy promise error ${JSON.stringify(err)}`);
});

terminateUpgrade

terminateUpgrade(callback: AsyncCallback<void>): void

Terminates the update. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the operation is successful, err is undefined; otherwise, err is an Error object.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.terminateUpgrade((err: BusinessError) => {
  console.log(`terminateUpgrade error ${JSON.stringify(err)}`);
});

terminateUpgrade

terminateUpgrade(): Promise<void>

Terminates the update. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

updater.terminateUpgrade().then(() => {
  console.log(`terminateUpgrade success`);
}).catch((err: BusinessError) => {
  console.log(`terminateUpgrade error ${JSON.stringify(err)}`);
});

on

on(eventClassifyInfo: EventClassifyInfo, taskCallback: UpgradeTaskCallback): void

Enables listening for update events. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Parameters

Name	Type	Mandatory	Description
eventClassifyInfo	EventClassifyInfo	Yes	Event information.
taskCallback	UpgradeTaskCallback	Yes	Event callback.

Example

const eventClassifyInfo: update.EventClassifyInfo = {
  eventClassify: update.EventClassify.TASK, // Listening for update events
  extraInfo: ""
};

updater.on(eventClassifyInfo, (eventInfo: update.EventInfo) => {
  console.log("updater on " + JSON.stringify(eventInfo));
});

off

off(eventClassifyInfo: EventClassifyInfo, taskCallback?: UpgradeTaskCallback): void

Disables listening for update events. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Parameters

Name	Type	Mandatory	Description
eventClassifyInfo	EventClassifyInfo	Yes	Event information.
taskCallback	UpgradeTaskCallback	No	Event callback.

Example

const eventClassifyInfo: update.EventClassifyInfo = {
  eventClassify: update.EventClassify.TASK, // Listening for update events
  extraInfo: ""
};

updater.off(eventClassifyInfo, (eventInfo: update.EventInfo) => {
  console.log("updater off " + JSON.stringify(eventInfo));
});

Restorer

factoryReset

factoryReset(callback: AsyncCallback<void>): void

Restores the scale to its factory settings. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.FACTORY_RESET

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the operation is successful, err is undefined; otherwise, err is an Error object.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

restorer.factoryReset((err) => {
  console.log(`factoryReset error ${JSON.stringify(err)}`);
});

factoryReset

factoryReset(): Promise<void>

Restores the scale to its factory settings. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.FACTORY_RESET

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

restorer.factoryReset().then(() => {
  console.log(`factoryReset success`);
}).catch((err: BusinessError) => {
  console.log(`factoryReset error ${JSON.stringify(err)}`);
});

LocalUpdater

verifyUpgradePackage

verifyUpgradePackage(upgradeFile: UpgradeFile, certsFile: string, callback: AsyncCallback<void>): void

Verifies the update package. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
upgradeFile	UpgradeFile	Yes	Update file.
certsFile	string	Yes	Path of the certificate file.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

const upgradeFile: update.UpgradeFile = {
  fileType: update.ComponentType.OTA, // OTA package
  filePath: "path" // Path of the local update package
};

localUpdater.verifyUpgradePackage(upgradeFile, "cerstFilePath", (err) => {
  console.log(`factoryReset error ${JSON.stringify(err)}`);
});

verifyUpgradePackage

verifyUpgradePackage(upgradeFile: UpgradeFile, certsFile: string): Promise<void>

Verifies the update package. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
upgradeFile	UpgradeFile	Yes	Update file.
certsFile	string	Yes	Path of the certificate file.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

const upgradeFile: update.UpgradeFile = {
  fileType: update.ComponentType.OTA, // OTA package
  filePath: "path" // Path of the local update package
};
localUpdater.verifyUpgradePackage(upgradeFile, "cerstFilePath").then(() => {
  console.log(`verifyUpgradePackage success`);
}).catch((err: BusinessError) => {
  console.log(`verifyUpgradePackage error ${JSON.stringify(err)}`);
});

applyNewVersion

applyNewVersion(upgradeFiles: Array<UpgradeFile>, callback: AsyncCallback<void>): void

Installs the update package. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Parameters

Name	Type	Mandatory	Description
upgradeFile	Array<UpgradeFile>	Yes	Update file.
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the operation is successful, err is undefined; otherwise, err is an Error object.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

const upgradeFiles: Array<update.UpgradeFile> = [{
  fileType: update.ComponentType.OTA, // OTA package
  filePath: "path" // Path of the local update package
}];

localUpdater.applyNewVersion(upgradeFiles, (err) => {
  console.log(`applyNewVersion error ${JSON.stringify(err)}`);
});

applyNewVersion

applyNewVersion(upgradeFiles: Array<UpgradeFile>): Promise<void>

Installs the update package. This API uses a promise to return the result.

System capability: SystemCapability.Update.UpdateService

Required permission: ohos.permission.UPDATE_SYSTEM

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Update Error Codes.

ID	Error Message
11500104	IPC error.

Example

import { BusinessError } from '@ohos.base';

const upgradeFiles: Array<update.UpgradeFile> = [{
  fileType: update.ComponentType.OTA, // OTA package
  filePath: "path" // Path of the local update package
}];
localUpdater.applyNewVersion(upgradeFiles).then(() => {
  console.log(`applyNewVersion success`);
}).catch((err: BusinessError) => {
  console.log(`applyNewVersion error ${JSON.stringify(err)}`);
});

on

on(eventClassifyInfo: EventClassifyInfo, taskCallback: UpgradeTaskCallback): void

Enables listening for update events. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Parameters

Name	Type	Mandatory	Description
eventClassifyInfo	EventClassifyInfo	Yes	Event information.
taskCallback	UpgradeTaskCallback	Yes	Event callback.

Example

const eventClassifyInfo: update.EventClassifyInfo = {
  eventClassify: update.EventClassify.TASK, // Listening for update events
  extraInfo: ""
};

let onTaskUpdate: update.UpgradeTaskCallback = (eventInfo: update.EventInfo) => {
  console.log(`on eventInfo id `, eventInfo.eventId);
};

localUpdater.on(eventClassifyInfo, onTaskUpdate);

off

off(eventClassifyInfo: EventClassifyInfo, taskCallback?: UpgradeTaskCallback): void

Disables listening for update events. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Update.UpdateService

Parameters

Name	Type	Mandatory	Description
eventClassifyInfo	EventClassifyInfo	Yes	Event information.
taskCallback	UpgradeTaskCallback	No	Event callback.

Example

const eventClassifyInfo: update.EventClassifyInfo = {
  eventClassify: update.EventClassify.TASK, // Listening for update events
  extraInfo: ""
};

let onTaskUpdate: update.UpgradeTaskCallback = (eventInfo: update.EventInfo) => {
  console.log(`on eventInfo id `, eventInfo.eventId);
};

localUpdater.off(eventClassifyInfo, onTaskUpdate);

UpgradeInfo

Represents update information.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
upgradeApp	string	Yes	Application package name.
businessType	BusinessType	Yes	Update service type.

BusinessType

Enumerates update service types.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
vendor	BusinessVendor	Yes	Supplier or vendor.
subType	BusinessSubType	Yes	Represents an update type.

CheckResult

Represents the package check result.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
isExistNewVersion	boolean	Yes	Whether a new version is available. The value true indicates that a new version is available, and the value false indicates the opposite.
newVersionInfo	NewVersionInfo	No	Information about the new version.

NewVersionInfo

Represents information about the new version.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
versionComponents	Array<VersionComponent>	Yes	Version components.

VersionDigestInfo

Represents version digest information.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
versionDigest	string	Yes	Version digest information.

VersionComponent

Represents a version component.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
componentId	string	Yes	Component ID.
componentType	ComponentType	Yes	Component type.
upgradeAction	UpgradeAction	Yes	Update mode.
displayVersion	string	Yes	Display version number.
innerVersion	string	Yes	Internal version number.
size	number	Yes	Size of the update package, in bytes.
effectiveMode	EffectiveMode	Yes	Effective mode.
descriptionInfo	DescriptionInfo	Yes	Information about the version description file.

DescriptionOptions

Represents options of the description file.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
format	DescriptionFormat	Yes	Format of the description file.
language	string	Yes	Language of the description file.

ComponentDescription

Represents a component description file.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
componentId	string	Yes	Component ID.
descriptionInfo	DescriptionInfo	Yes	Information about the description file.

DescriptionInfo

Represents information about the version description file.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
descriptionType	DescriptionType	Yes	Type of the description file.
content	string	Yes	Content of the description file.

CurrentVersionInfo

Represents information about the current version.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
osVersion	string	Yes	System version number.
deviceName	string	Yes	Device name.
versionComponents	Array<VersionComponent>	No	Version components.

DownloadOptions

Represents download options.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
allowNetwork	NetType	Yes	Network type.
order	Order	Yes	Update command.

ResumeDownloadOptions

Represents options for resuming download.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
allowNetwork	NetType	Yes	Network type.

PauseDownloadOptions

Represents options for pausing download.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
isAllowAutoResume	boolean	Yes	Whether to allow automatic resuming of download. The value true indicates that automatic resuming is allowed, and the value false indicates the opposite.

UpgradeOptions

Represents update options.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
order	Order	Yes	Update command.

ClearOptions

Represents options for clearing errors.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
status	UpgradeStatus	Yes	Error status.

UpgradePolicy

Represents an update policy.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
downloadStrategy	boolean	Yes	Automatic download policy. The value true indicates that automatic download is supported, and the value false indicates the opposite.
autoUpgradeStrategy	boolean	Yes	Automatic update policy. The value true indicates that automatic update is supported, and the value false indicates the opposite.
autoUpgradePeriods	Array<UpgradePeriod>	Yes	Automatic update period.

UpgradePeriod

Represents an automatic update period.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
start	number	Yes	Start time.
end	number	Yes	End time.

TaskInfo

Task information.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
existTask	boolean	Yes	Whether a task exists. The value true indicates that the task exists, and the value false indicates the opposite.
taskBody	TaskBody	Yes	Task data.

EventInfo

Represents event information.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
eventId	EventId	Yes	Event ID.
taskBody	TaskBody	Yes	Task data.

TaskBody

Represents task data.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
versionDigestInfo	VersionDigestInfo	Yes	Version digest information.
status	UpgradeStatus	Yes	Update status.
subStatus	number	No	Sub-status.
progress	number	Yes	Progress.
installMode	number	Yes	Installation mode.
errorMessages	Array<ErrorMessage>	No	Error message.
versionComponents	Array<VersionComponent>	Yes	Version components.

ErrorMessage

Represents an error message.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
errorCode	number	Yes	Error code.
errorMessage	string	Yes	Error message.

EventClassifyInfo

Represents event type information.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
eventClassify	EventClassify	Yes	Event type.
extraInfo	string	Yes	Additional information.

UpgradeFile

Represents an update file.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
fileType	ComponentType	Yes	File type.
filePath	string	Yes	File path.

UpgradeTaskCallback

(eventInfo: EventInfo): void

Represents an event callback.

System capability: SystemCapability.Update.UpdateService

Name	Type	Mandatory	Description
eventInfo	EventInfo	Yes	Event information.

BusinessVendor

Represents a device vendor.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
PUBLIC	“public”	Open source.

BusinessSubType

Represents an update type.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
FIRMWARE	1	Firmware.

ComponentType

Represents a component type.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
OTA	1	Firmware.

UpgradeAction

Represents an update mode.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
UPGRADE	“upgrade”	Differential package.
RECOVERY	“recovery”	Recovery package.

EffectiveMode

Represents an effective mode.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
COLD	1	Cold update.
LIVE	2	Live update.
LIVE_AND_COLD	3	Hybrid live and cold update.

DescriptionType

Represents a description file type.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
CONTENT	0	Content.
URI	1	Link.

DescriptionFormat

Represents a description file format.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
STANDARD	0	Standard format.
SIMPLIFIED	1	Simple format.

NetType

Represents a network type.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
CELLULAR	1	Data network.
METERED_WIFI	2	Wi-Fi hotspot.
NOT_METERED_WIFI	4	Non Wi-Fi hotspot.
WIFI	6	Wi-Fi.
CELLULAR_AND_WIFI	7	Data network and Wi-Fi.

Order

Represents an update command.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
DOWNLOAD	1	Download.
INSTALL	2	Install.
DOWNLOAD_AND_INSTALL	3	Download and install.
APPLY	4	Apply.
INSTALL_AND_APPLY	6	Install and apply.

UpgradeStatus

Enumerates update states.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
WAITING_DOWNLOAD	20	Waiting for download.
DOWNLOADING	21	Downloading.
DOWNLOAD_PAUSED	22	Download paused.
DOWNLOAD_FAIL	23	Download failed.
WAITING_INSTALL	30	Waiting for installation.
UPDATING	31	Updating.
WAITING_APPLY	40	Waiting for applying the update.
APPLYING	41	Applying the update.
UPGRADE_SUCCESS	50	Update succeeded.
UPGRADE_FAIL	51	Update failed.

EventClassify

Represents an event type.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
TASK	0x01000000	Task event.

EventId

Enumerates event IDs.

System capability: SystemCapability.Update.UpdateService

Name	Value	Description
EVENT_TASK_BASE	EventClassify.TASK	Task event.
EVENT_TASK_RECEIVE	0x01000001	Task received.
EVENT_TASK_CANCEL	0x01000002	Task cancelled.
EVENT_DOWNLOAD_WAIT	0x01000003	Waiting for download.
EVENT_DOWNLOAD_START	0x01000004	Download started.
EVENT_DOWNLOAD_UPDATE	0x01000005	Download progress update.
EVENT_DOWNLOAD_PAUSE	0x01000006	Download paused.
EVENT_DOWNLOAD_RESUME	0x01000007	Download resumed.
EVENT_DOWNLOAD_SUCCESS	0x01000008	Download succeeded.
EVENT_DOWNLOAD_FAIL	0x01000009	Download failed.
EVENT_UPGRADE_WAIT	0x0100000A	Waiting for update.
EVENT_UPGRADE_START	0x0100000B	Update started.
EVENT_UPGRADE_UPDATE	0x0100000C	Update in progress.
EVENT_APPLY_WAIT	0x0100000D	Waiting for applying the update.
EVENT_APPLY_START	0x0100000E	Applying the update.
EVENT_UPGRADE_SUCCESS	0x0100000F	Update succeeded.
EVENT_UPGRADE_FAIL	0x01000010	Update failed.

你可能感兴趣的鸿蒙文章

harmony 鸿蒙APIs

harmony 鸿蒙System Common Events (To Be Deprecated Soon)

harmony 鸿蒙System Common Events

harmony 鸿蒙API Reference Document Description

harmony 鸿蒙Enterprise Device Management Overview (for System Applications Only)

harmony 鸿蒙BundleStatusCallback

harmony 鸿蒙@ohos.bundle.innerBundleManager (innerBundleManager)

harmony 鸿蒙@ohos.distributedBundle (Distributed Bundle Management)

harmony 鸿蒙@ohos.bundle (Bundle)

harmony 鸿蒙@ohos.enterprise.EnterpriseAdminExtensionAbility (EnterpriseAdminExtensionAbility)