HarmonyOS 鸿蒙Next VPN适配相关问题

开始申请长时任务和每隔一分钟调用一次 this.updateProcess() 来更新通知，要一起处理，请参考以下代码：

function callback(info: backgroundTaskManager.ContinuousTaskCancelInfo) {
  // 长时任务id
  console.info('OnContinuousTaskCancel callback id ' + info.id);
  // 长时任务取消原因
  console.info('OnContinuousTaskCancel callback reason ' + info.reason);
}

// 获取应用文件路径
let context = this.getContext(this) as common.UIAbilityContext;
let cacheDir = context.cacheDir;

@Entry
@Component
struct Index {
  ids: number = 0
  @State message: string = 'ContinuousTask';
  // 通过getUIContext().getHostContext()方法，来获取page所在的UIAbility上下文
  private context: Context | undefined = this.getUIContext().getHostContext();

  OnContinuousTaskCancel() {
    try {
      backgroundTaskManager.on("continuousTaskCancel", callback);
      console.info(`Succeeded in operationing OnContinuousTaskCancel.`);
    } catch (error) {
      console.error(`Operation OnContinuousTaskCancel failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
    }
  }

  OffContinuousTaskCancel() {
    try {
      // callback参数不传，则取消所有已注册的回调
      backgroundTaskManager.off("continuousTaskCancel", callback);
      console.info(`Succeeded in operationing OffContinuousTaskCancel.`);
    } catch (error) {
      console.error(`Operation OffContinuousTaskCancel failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
    }
  }

  startContinuousTask() {
    let wantAgentInfo: wantAgent.WantAgentInfo = {
      // 点击通知后，将要执行的动作列表
      // 添加需要被拉起应用的bundleName和abilityName
      wants: [
        {
          bundleName: "com.example.backgrouddemo",
          abilityName: "EntryAbility"
        }
      ],
      // 指定点击通知栏消息后的动作是拉起ability
      actionType: wantAgent.OperationType.START_ABILITY,
      // 使用者自定义的一个私有值
      requestCode: 0,
      // 点击通知后，动作执行属性
      actionFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG],
      // 车钥匙长时任务子类型。只有申请bluetoothInteraction类型的长时任务，车钥匙子类型才能生效。
      // 确保extraInfo参数中的Key值为backgroundTaskManager.BackgroundModeType.SUB_MODE，否则子类型不生效。
      // extraInfo: { [backgroundTaskManager.BackgroundModeType.SUB_MODE] : backgroundTaskManager.BackgroundSubMode.CAR_KEY }
    };

    try {
      // 通过wantAgent模块下getWantAgent方法获取WantAgent对象
      wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) => {
        try {
          let list: Array<string> = ["dataTransfer"];
          // let list: Array<string> = ["bluetoothInteraction"]; 长时任务类型包含bluetoothInteraction，CAR_KEY子类型合法
          backgroundTaskManager.startBackgroundRunning(this.context, list, wantAgentObj)
            .then((res: backgroundTaskManager.ContinuousTaskNotification) => {
              console.info("Operation startBackgroundRunning succeeded");
              // 此处执行具体的长时任务逻辑，如录音，录制等。
              promptAction.showToast({ message: '后台任务，开启成功' })
              create_server();
              tpc_client();
              this.ids = res.notificationId;
            })
            .catch((error: BusinessError) => {
              console.error(`Failed to Operation startBackgroundRunning. code is ${error.code} message is ${error.message}`);
            });
        } catch (error) {
          console.error(`Failed to Operation startBackgroundRunning. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
        }
      });
    } catch (error) {
      console.error(`Failed to Operation getWantAgent. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
    }
  }

  // 应用更新进度
  updateProcess(process: Number) {
    // 应用定义下载类通知模版
    let downLoadTemplate: notificationManager.NotificationTemplate = {
      name: 'downloadTemplate', // 当前只支持downloadTemplate，保持不变
      data: {
        title: 'socket通信中', // 必填
        fileName: 'senTemplate', // 必填
        progressValue: process, // 应用更新进度值，自定义
      }
    };
    let request: notificationManager.NotificationRequest = {
      content: {
        // 系统实况类型，保持不变
        notificationContentType: notificationManager.ContentType.NOTIFICATION_CONTENT_SYSTEM_LIVE_VIEW,
        systemLiveView: {
          typeCode: 8, // 上传下载类型需要填写 8，当前仅支持此类型。保持不变
          title: "test", // 应用自定义
          text: "test", // 应用自定义
        }
      },
      id: this.ids, // 必须是申请长时任务返回的id，否则应用更新通知失败
      notificationSlotType: notificationManager.SlotType.LIVE_VIEW, // 实况窗类型，保持不变
      template: downLoadTemplate // 应用需要设置的模版名称
    };

    try {
      notificationManager.publish(request).then(() => {
        console.info("publish success, id= " + this.id);
      }).catch((err: BusinessError) => {
        console.error(`publish fail: ${JSON.stringify(err)}`);
      });
    } catch (err) {
      console.error(`publish fail: ${JSON.stringify(err)}`);
    }
  }

  stopContinuousTask() {
    backgroundTaskManager.stopBackgroundRunning(this.context).then(() => {
      console.info(`Succeeded in operationing stopBackgroundRunning.`);
    }).catch((err: BusinessError) => {
      console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
    });
  }

  build() {
    Row() {
      Column() {
        Button() {
          Text('申请长时任务').fontSize(25).fontWeight(FontWeight.Bold)
        }
        .type(ButtonType.Capsule)
        .margin({ top: 10 })
        .backgroundColor('#0D9FFB')
        .width(250)
        .height(40)
        .onClick(() => {
          this.startContinuousTask();
          let process = 0
          setInterval(() => {
            process += 1
            this.updateProcess(process)
          }, 1000 * 60)
        })
      }
      .width('100%')
    }
    .height('100%')
  }
}