开启后台定位功能地图功能希望在后台持续运行，后台运行超过一小段时间且未申请定位导航长时任务则会被冻结

 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] 
    }; 
 
    // 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.LOCATION, 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}`); 
      }); 
    }); 
  } 
 
  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() { 
    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%') 
  } 
}
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