颤振中的计步器包不适用于某些设备

Question

我在我的 Flutter 应用程序中使用了计步器包版本 ^1.2.0，我注意到它不适用于三星 A30 等一些设备，我使用的版本不需要任何权限，它在我的设备 OPPO F7 (Used Android 10) 那么有什么问题呢？

这是代码

StreamSubscription<int> _subscription;
Box<int> stepsBox = Hive.box('steps');
int todaySteps;

@override
void initState() {
 super.initState();
 startListening();
}

@override
void dispose() {
 stopListening();
 super.dispose();
}

void startListening() {
_pedometer = Pedometer();
_subscription = _pedometer.pedometerStream.listen(
  getTodaySteps,
  onError: _onError,
  onDone: _onDone,
  cancelOnError: true,
);
}

void _onDone() => print("Finished pedometer tracking");
void _onError(error) => print("Flutter Pedometer Error: $error");

Future<int> getTodaySteps(int value) async {
print(value);
int savedStepsCountKey = 999999;
int savedStepsCount = stepsBox.get(savedStepsCountKey, defaultValue: 0);

int todayDayNo = Jiffy(DateTime.now()).dayOfYear;
if (value < savedStepsCount) {
  // Upon device reboot, pedometer resets. When this happens, the saved counter must be reset as well.
  savedStepsCount = 0;
  // persist this value using a package of your choice here
  stepsBox.put(savedStepsCountKey, savedStepsCount);
}

// load the last day saved using a package of your choice here
int lastDaySavedKey = 888888;
int lastDaySaved = stepsBox.get(lastDaySavedKey, defaultValue: 0);

// When the day changes, reset the daily steps count
// and Update the last day saved as the day changes.
if (lastDaySaved < todayDayNo) {
  lastDaySaved = todayDayNo;
  savedStepsCount = value;

  stepsBox
    ..put(lastDaySavedKey, lastDaySaved)
    ..put(savedStepsCountKey, savedStepsCount);
}

setState(() {
  todaySteps = value - savedStepsCount;
});
stepsBox.put(todayDayNo, todaySteps);
return todaySteps; // this is your daily steps value.
}

void stopListening() {
 _subscription.cancel();
}

Answer 1

我认为在这种情况下，最好直接在 lib 存储库中提出问题，针对您的问题提出问题。 https://github.com/cph-cachet/flutter-plugins/issues

Answer 2

检查权限。

await Permission.activityRecognition.request().isGranted

这将检查权限并在不允许时请求权限

if (await Permission.activityRecognition.request().isGranted) {
  _pedestrianStatusStream = Pedometer.pedestrianStatusStream;
  _pedestrianStatusStream
      .listen(onPedestrianStatusChanged)
      .onError(onPedestrianStatusError);

  _stepCountStream = Pedometer.stepCountStream;
  _stepCountStream.listen(onStepCount).onError(onStepCountError);
}else{
  
}
if (!mounted) return;