监听多个传感器并使用Android上的传感器值更新多个TextViews

Question

我一直在开发一个神秘的应用程序，该应用程序允许用户同时获取多个Sensor值并将它们显示在Listview上。但是，令我沮丧的是，我从未能够获取加速度计值，仅此而已。我尝试了多种方法来注册所有可用的传感器，例如陀螺仪，磁场，方向等。由于加速度计具有优先权并每次都会触发，因此它们都无法检索值。有没有办法同时注册多个传感器并从中获取数据以更新UI。

mAccelerometerListener = new SensorEventListener() {
        @Override
        public void onAccuracyChanged(Sensor arg0, int arg1) {
        }

        @Override
        public void onSensorChanged(SensorEvent event) {
            Sensor sensor = event.sensor;
            //Update UI
            } 
        }
    };

    mGyroscopeListener = new SensorEventListener() {

        @Override
        public void onSensorChanged(SensorEvent event) {
            // TODO Auto-generated method stub
            if (event.sensor.getType() == Sensor.TYPE_GYROSCOPE) {
                //Update Ui

            }
        }

        @Override
        public void onAccuracyChanged(Sensor sensor, int accuracy) {
            // TODO Auto-generated method stub

        }
    };

    mMagnetometerListener = new SensorEventListener() {

        @Override
        public void onSensorChanged(SensorEvent event) {
            // TODO Auto-generated method stub
            if (event.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD) {
                //Update UI
                }

            }
        }

        @Override
        public void onAccuracyChanged(Sensor sensor, int accuracy) {
            // TODO Auto-generated method stub

        }
    };

if (Config.isSensorPresent(ACCELERATION)) {
        //sendMessageToService(Sensor.TYPE_ACCELEROMETER);
        mSensorManager.registerListener(mAccelerometerListener, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_GAME);
    }
    // Detect whether the device has Gyroscope on it
    if (Config.isSensorPresent(GYROSCOPE)) {
        //sendMessageToService(Sensor.TYPE_GYROSCOPE);
        mSensorManager.registerListener(mGyroscopeListener, mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE), SensorManager.SENSOR_DELAY_GAME);
    }
    // Detect whether the device has Magnetic Field Sensor
    if (Config.isSensorPresent(MAGNETIC_FIELD)) {
        //sendMessageToService(Sensor.TYPE_MAGNETIC_FIELD);
        mSensorManager.registerListener(mMagnetometerListener, mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD), SensorManager.SENSOR_DELAY_GAME);
    }

这似乎无法同时更新所有它们。哎呀，它甚至不会发射其他类型的传感器。

尝试过Is there a way to retrieve multiple sensor data in Android中建议的方法。对我不起作用。

Answer 1

具有单个传感器事件侦听器并将所有传感器注册到它，但是在onSensorChanged（）方法中，您可以找出哪个传感器已调用它并采取相应的措施。

public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() == Sensor.TYPE_GYROSCOPE)//update gyro
if (event.sensor.getType() == //acclometer)update acc
.
.
.
so on

        }

Answer 2

我认为第8行可能是您的问题。但是，您也可以尝试以下代码：

    public class MainActivity extends AppCompatActivity implements 
    SensorEventListener{
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            SensorManager sm = (SensorManager)this.getSystemService(SENSOR_SERVICE);
            Sensor se = sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
            sm.registerListener((SensorEventListener) this, se, SensorManager.SENSOR_DELAY_GAME);
            Sensor se1 = sm.getDefaultSensor(TYPE_GYROSCOPE);
            sm.registerListener((SensorEventListener) this, se1, SensorManager.SENSOR_DELAY_GAME);
            Sensor se2 = sm.getDefaultSensor(TYPE_MAGNETIC_FIELD);
            sm.registerListener((SensorEventListener) this, se2, SensorManager.SENSOR_DELAY_GAME);
    }

        @Override
        public void onSensorChanged(SensorEvent event) {
            if(event.sensor.getType()==Sensor.TYPE_ACCELEROMETER){
                 //Update UI        
            }
            if(event.sensor.getType()==Sensor.TYPE_GYROSCOPE){
            //UpdateUI
            }
            if(event.sensor.getType()==Sensor.TYPE_MAGNETIC_FIELD){
            //UpdateUI
            }

        }

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

        }
    }