harmony 鸿蒙Theme Framework Subsystem – Screenlock Management Service Changelog

2023-06-24
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Theme Framework Subsystem – Screenlock Management Service Changelog

cl.screenlock.1 Permission Change of isLocked and unlock

Changed the isLocked and unlock APIs to system APIs since API version 9.

You need to adapt your application based on the following information.

Change Impact

The JS API needs to be adapted for applications developed based on earlier versions. Otherwise, relevant functions will be affected.

Involved APIs:

  function isLocked(): boolean;
  function unlock(callback: AsyncCallback<boolean>): void;
  function unlock():Promise<boolean>;

Before change:

   * Checks whether the screen is currently locked.
   *
   * @returns Returns {@code true} if the screen is currently locked; returns {@code false} otherwise.
   * @syscap SystemCapability.MiscServices.ScreenLock
   * @since 9
   */
  function isLocked(): boolean;

  /**
   * Unlock the screen.
   *
   * @returns Returns {@code true} if the screen is unlocked successfully; returns {@code false} otherwise.
   * @throws {BusinessError} 401 - parameter error.
   * @throws {BusinessError} 202 - permission verification failed, application which is not a system application uses system API.
   * @throws {BusinessError} 13200002 - the screenlock management service is abnormal.
   * @syscap SystemCapability.MiscServices.ScreenLock
   * @systemapi Hide this for inner system use.
   * @since 9
   */
  function unlock(callback: AsyncCallback<boolean>): void;

  /**
   * Unlock the screen.
   *
   * @returns Returns {@code true} if the screen is unlocked successfully; returns {@code false} otherwise.
   * @throws {BusinessError} 401 - parameter error.
   * @throws {BusinessError} 202 - permission verification failed, application which is not a system application uses system API.
   * @throws {BusinessError} 13200002 - the screenlock management service is abnormal.
   * @syscap SystemCapability.MiscServices.ScreenLock
   * @systemapi Hide this for inner system use.
   * @since 9
   */
  function unlock():Promise<boolean>;

After change:

   * Checks whether the screen is currently locked.
   *
   * @returns Returns {@code true} if the screen is currently locked; returns {@code false} otherwise.
   * @throws {BusinessError} 202 - permission verification failed, application which is not a system application uses system API.
   * @syscap SystemCapability.MiscServices.ScreenLock
   * @systemapi Hide this for inner system use.
   * @since 9
   */
  function isLocked(): boolean;

  /**
   * Unlock the screen.
   *
   * @returns Returns {@code true} if the screen is unlocked successfully; returns {@code false} otherwise.
   * @throws {BusinessError} 401 - parameter error.
   * @throws {BusinessError} 13200002 - the screenlock management service is abnormal.
   * @syscap SystemCapability.MiscServices.ScreenLock
   * @since 9
   */
  function unlock(callback: AsyncCallback<boolean>): void;

  /**
   * Unlock the screen.
   *
   * @returns Returns {@code true} if the screen is unlocked successfully; returns {@code false} otherwise.
   * @throws {BusinessError} 13200002 - the screenlock management service is abnormal.
   * @syscap SystemCapability.MiscServices.ScreenLock
   * @since 9
   */
  function unlock():Promise<boolean>;

Adaptation Guide

Make sure the APIs are only invoked by system applications.

The code snippet is as follows:

    try {
      let ret = screenLock.isLocked();
      console.error(`Obtain whether the screen is locked successfully , ret is: ${ret}`);
    } catch (error) {
      console.error(`Failed to obtain whether the screen is locked, error is : ${error.code}, ${error.message}`);
    }

    screenlock.unlock((err, data) => {      
        if (err) {
            console.error(`Failed to unlock the screen, because: ${err.message}`);
            return;    
        }
        console.info(`unlock the screen successfully. result: ${data}`);
    });

    screenlock.unlock().then((data) => {
        console.info(`unlock the screen successfully. result: ${data}`);
    }).catch((err) => {
        console.error(`Failed to unlock the screen, because: ${err.message}`);
    });