鸿蒙开发：应用内如何做更新

/**
     * Check for Update.
     *
     * @param { common.UIAbilityContext } context - the context of an ability
     * @returns { Promise<CheckUpdateResult> } The promise of CheckUpdateResult returned by the function.
     * @throws { BusinessError } 401 - Parameter error.
     * @throws { BusinessError } 1009400001 - SA connect error
     * @throws { BusinessError } 1009400002 - Request to service error.
     * @throws { BusinessError } 1009400003 - Network error.
     * @throws { BusinessError } 1009400004 - The application is not in the foreground.
     * @throws { BusinessError } 1009400005 - Not agreeing to the privacy agreement.
     * @throws { BusinessError } 1009400006 - Time limited.
     * @throws { BusinessError } 1009400007 - Other error.
     * @syscap SystemCapability.AppGalleryService.Distribution.Update
     * @stagemodelonly
     * @since 5.0.0(12)
     */
    function checkAppUpdate(context: common.UIAbilityContext): Promise<CheckUpdateResult>;
    /**
     * Displaying the update dialog.
     *
     * @param { common.UIAbilityContext} context - the context of an ability
     * @returns { Promise<ShowUpdateResultCode> } The promise of ShowUpdateResultCode returned by the function.
     * @throws { BusinessError } 401 - Parameter error.
     * @throws { BusinessError } 1009400001 - SA connection error.
     * @throws { BusinessError } 1009400002 - Request to service error.
     * @throws { BusinessError } 1009400004 - The application is not in the foreground.
     * @throws { BusinessError } 1009400005 - Not agreeing to the privacy agreement.
     * @throws { BusinessError } 1009400007 - Other error.
     * @syscap SystemCapability.AppGalleryService.Distribution.Update
     * @stagemodelonly
     * @since 5.0.0(12)
     */
    function showUpdateDialog(context: common.UIAbilityContext): Promise<ShowUpdateResultCode>;

/**
   * 检查是否有更新，使用Promise方式异步返回结果
   */
  checkAppUpdate() {
    try {
      updateManager.checkAppUpdate(getContext() as common.UIAbilityContext)
        .then((checkResult: updateManager.CheckUpdateResult) => {
          //检查结果
          if (checkResult.updateAvailable == updateManager.UpdateAvailableCode.LATER_VERSION_EXIST) {
            //存在新的版本
            this.showUpdateDialog()
          }
        })
    } catch (error) {
    }
  }
  /**
   * 弹出更新弹窗
   */
  showUpdateDialog() {
    try {
      updateManager.showUpdateDialog(getContext() as common.UIAbilityContext)
    } catch (error) {
    }
  }

/**
   * 检查是否有更新，使用Promise方式异步返回结果
   */
  async checkAppUpdate() {
    let context = getContext() as common.UIAbilityContext
    let checkResult = await updateManager.checkAppUpdate(context)
    //检查结果
    if (checkResult.updateAvailable == updateManager.UpdateAvailableCode.LATER_VERSION_EXIST) {
      //存在新的版本
      updateManager.showUpdateDialog(context)
    }
  }

/**
   * 检查是否有更新，使用Promise方式异步返回结果
   */
  async checkAppUpdate() {
    let context = getContext() as common.UIAbilityContext
    let checkResult = await updateManager.checkAppUpdate(context)
    //检查结果
    if (checkResult.updateAvailable == updateManager.UpdateAvailableCode.LATER_VERSION_EXIST) {
      //存在新的版本，弹出自己的视图，自己去定义
    }
  }

/**
   * productViewManager拉齐应用详情页
   */
  loadProduct() {
    const uiContext = getContext(this) as common.UIAbilityContext
    const wantParam: Want = {
      parameters: {
        // 必填，此处填入要加载的应用包名，例如： bundleName: 'com.huawei.hmsapp.books'
        bundleName: 'com.xx.xx',
      }
    }
    const callback: productViewManager.ProductViewCallback = {
      onError: (error: BusinessError) => {
        hilog.error(0, 'TAG', `loadService onError.code is ${error.code}, message is ${error.message}`)
      },
      onAppear: () => {
        hilog.info(0, 'TAG', `loadProduct onAppear.`);
      },
      onDisappear: () => {
        hilog.info(0, 'TAG', `loadProduct onDisappear.`);
      }
    }
    // 调用接口，拉起应用详情页
    productViewManager.loadProduct(uiContext, wantParam, callback);
  }

store://appgallery.huawei.com/app/detail?id= + bundleName

// 拉起应用市场对应的应用详情页面
function startAppGalleryDetailAbility(context: common.UIAbilityContext, bundleName: string): void {
  let want: Want = {
    action: 'ohos.want.action.appdetail', //隐式指定action为ohos.want.action.appdetail
    uri: 'store://appgallery.huawei.com/app/detail?id=' + bundleName, //  bundleName为需要打开应用详情的应用包名
  };
  context.startAbility(want).then(() => {
    hilog.info(0x0001, 'TAG', "Succeeded in starting Ability successfully.")
  }).catch((error: BusinessError) => {
    hilog.error(0x0001, 'TAG', `Failed to startAbility.Code: ${error.code}, message is ${error.message}`);
  });
}

startAppGalleryDetailAbility(getContext() as common.UIAbilityContext,"com.xx.xx")

https://appgallery.huawei.com/app/detail?id= + bundleName

openLink(){
    let context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext;
    // 需要拼接不同的应用包名，用以打开不同的应用详情页,例如：bundleName: 'com.huawei.hmsapp.books'
    let bundleName: string = 'com.xx.xx';
    let link: string = 'https://appgallery.huawei.com/app/detail?id=' + bundleName;
    // 以App Linking优先的方式在应用市场打开指定包名的应用详情页
    context.openLink(link, { appLinkingOnly: false })
      .then(() => {
        hilog.info(0x0001, 'TAG', 'openlink success.');
      })
      .catch((error: BusinessError) => {
        hilog.error(0x0001, 'TAG', `openlink failed. Code: ${error.code}, message is ${error.message}`);
      });
  }