HarmonyOS 鸿蒙Next：手表后台应用定位与运行问题，息屏停掉亮屏正常

  startContinuousTask() {
    let ctx = this.context as common.UIAbilityContext;
    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: ctx.abilityInfo.bundleName,
          abilityName: ctx.abilityInfo.name
        }
      ],
      // 指定点击通知栏消息后的动作是拉起ability
      operationType: 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
      wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
    };
<span class="hljs-comment"><span class="hljs-comment">// 通过wantAgent模块下getWantAgent方法获取WantAgent对象</span></span>
wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) =&gt; {
  backgroundTaskManager.startBackgroundRunning(<span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.context,
    backgroundTaskManager.BackgroundMode.LOCATION, wantAgentObj).then(() =&gt; {
    console.info(`Succeeded <span class="hljs-keyword"><span class="hljs-keyword">in</span></span> operationing startBackgroundRunning.`);
  }).catch((err: BusinessError) =&gt; {
    console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
  });
});
}
stopContinuousTask() {
backgroundTaskManager.stopBackgroundRunning(this.context).then(() => {
console.info(Succeeded <span class="hljs-keyword"><span class="hljs-keyword">in</span></span> operationing stopBackgroundRunning.);
}).catch((err: BusinessError) => {
console.error(Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message});
});
}
build() {
Column({ space: 50 }) {
Text(this.message)
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(() => {
// 通过按钮申请长时任务
this.startContinuousTask();
// 此处执行具体的长时任务逻辑，如放音等。
})
}
.width(‘100%’).height(‘100%’)
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

文档链接：长时任务-Background Tasks Kit（后台任务开发服务）-开发 | 华为开发者联盟 (huawei.com)