服务不会停止

Question

我有一个开关可以打开和关闭服务。 问题是它不能关闭服务，我不知道为什么， 该服务实现了SensorEventListener，其想法是应用程序将检测手机的移动而不在应用程序内。

但是关闭开关不起作用。 有什么想法为什么服务不会停止？

服务：

public class MyService extends Service implements SensorEventListener {

    private Sensor accelerometer;
    private SensorManager sm;
    private Float MinFallValue,MaxFallValue;

    public FallDetectorService() {
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.i("LocalService", "Received start id " + startId + ": " + intent);
        sm=(SensorManager)getSystemService(SENSOR_SERVICE);
        accelerometer = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        sm.registerListener(this, accelerometer,SensorManager.SENSOR_DELAY_NORMAL);
        return START_STICKY;
    }

    @Override
    public void onDestroy(){
        Toast.makeText(this, "Service Destroyed", Toast.LENGTH_SHORT).show();
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent intent) {
        throw new UnsupportedOperationException("Not yet implemented");
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        if (event.values[2] < MinFallValue)){
           // Do something
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {

    }
}

MainActivity：

Switch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if(isChecked){
            Toast.makeText(SettingActivity.this, "Starting service", Toast.LENGTH_LONG).show();
            Intent intent = new Intent(SettingActivity.this, MyService.class);
            startService(intent);
        }
        else{
            Toast.makeText(SettingActivity.this,"Stoping service",Toast.LENGTH_LONG).show();
            Intent intent = new Intent(SettingActivity.this, MyService.class);
            stopService(intent);
        }
    }
});