Android Tutorial => Retrieving sensor events

Example

Retrieving sensor information from the onboard sensors:

public class MainActivity extends Activity implements SensorEventListener {
 
    private SensorManager mSensorManager;
    private Sensor accelerometer;
    private Sensor gyroscope;

    float[] accelerometerData = new float[3];
    float[] gyroscopeData = new float[3];
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
 
        accelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        gyroscope = mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
 
    }
 
    @Override
    public void onResume() {
        //Register listeners for your sensors of interest
        mSensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_FASTEST);
        mSensorManager.registerListener(this, gyroscope, SensorManager.SENSOR_DELAY_FASTEST);
        super.onResume();
    }
 
    @Override
    protected void onPause() {
        //Unregister any previously registered listeners
        mSensorManager.unregisterListener(this);
        super.onPause();
    }
 
    @Override
    public void onSensorChanged(SensorEvent event) {
        //Check the type of sensor data being polled and store into corresponding float array
        if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
            accelerometerData = event.values;
        } else if (event.sensor.getType() == Sensor.TYPE_GYROSCOPE) {
            gyroscopeData = event.values; 
        }
    }
 
    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // TODO Auto-generated method stub
    }
}

PDF - Download Android for free

Previous Next

Android

Fastest Entity Framework Extensions

Example

Got any Android Question?

Android

Android SensorManager Retrieving sensor events

Fastest Entity Framework Extensions

Example

Got any Android Question?