@Override
protected void onResume() {
super.onResume();
final TextView sensorValues = (TextView) findViewById(R.id.sensor_values);
sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
Sensor sensor = sensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY);
gravityListener =
new SensorEventListener() {
@Override
public void onSensorChanged(SensorEvent event) {
double length =
Math.sqrt(
event.values[0] * event.values[0]
+ event.values[1] * event.values[1]
+ event.values[2] * event.values[2]);
double alfa = Math.asin(event.values[0] / length) * 180 / Math.PI;
double beta = Math.asin(event.values[1] / length) * 180 / Math.PI;
sensorValues.setText(alfa + "\n" + beta);
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {}
};
sensorManager.registerListener(gravityListener, sensor, SensorManager.SENSOR_DELAY_GAME);
}
@Override
protected void onPause() {
super.onPause();
sensorManager.unregisterListener(gravityListener);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}