实现后台播放在线音频鸿蒙示例代码

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.test.myapplication",
          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: 10,
      // 点击通知后，动作执行属性
      actionFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
    };

    // 通过wantAgent模块下getWantAgent方法获取WantAgent对象
    wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) => {
      backgroundTaskManager.startBackgroundRunning(this.context,
        backgroundTaskManager.BackgroundMode.AUDIO_PLAYBACK, wantAgentObj).then(() => {
        console.info(`Succeeded in operationing startBackgroundRunning.`);
      }).catch((err: BusinessError) => {
        console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
      });
    });
  }
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