React native 计步器。手表步数没有发出信号

我正在使用react native/expo并尝试访问计步器。我的代码在iOS Expo Go应用程序上运行良好，但在Android Expo（诺基亚7.2/Android 10）上，我没有从计步器上得到信号

以下是我在进入“WalkScreen”之前要做的事情：

下面是我如何使用计步器的：

  const subscribeToPedometer = () => {
    let thisWalking = false;
    let currentStepCountBefore = 0;
    const subscription = Pedometer.watchStepCount(result => {
      if (currentStepCountBefore === result.steps && thisWalking) {
        setWalking(false);
        thisWalking = false;
      } else if (!thisWalking) {
        setWalking(true);
        thisWalking = true;
      }
      currentStepCountBefore = result.steps;
      setCurrentStepCount(result.steps);
      console.log("Pedometer.watchStepCount result.steps", result.steps);
    });
    setPedometerSubscription(subscription);
    Pedometer.isAvailableAsync().then(
      result => {
        console.log("isAvailableAsync", result);
        setIsPedometerAvailable(result);
      },
      error => {
        console.log('Could not get isPedometerAvailable: ' + error);
        setIsPedometerAvailable(false);
      }
    );
  };

---

我进入漫游屏幕时没有任何问题，因此状态被授予。在Pedometer.isAvailableAsync（）方法中，我得到了true，因此它似乎是可用的。但是我在console.log

console.log（“Pedometer.watchStepCount result.steps”，result.steps）中没有得到任何数据
可能是因为这个原因吗？
  const subscribeToPedometer = () => {
    let thisWalking = false;
    let currentStepCountBefore = 0;
    const subscription = Pedometer.watchStepCount(result => {
      if (currentStepCountBefore === result.steps && thisWalking) {
        setWalking(false);
        thisWalking = false;
      } else if (!thisWalking) {
        setWalking(true);
        thisWalking = true;
      }
      currentStepCountBefore = result.steps;
      setCurrentStepCount(result.steps);
      console.log("Pedometer.watchStepCount result.steps", result.steps);
    });
    setPedometerSubscription(subscription);
    Pedometer.isAvailableAsync().then(
      result => {
        console.log("isAvailableAsync", result);
        setIsPedometerAvailable(result);
      },
      error => {
        console.log('Could not get isPedometerAvailable: ' + error);
        setIsPedometerAvailable(false);
      }
    );
  };