Gyroscope does not start immediately | Android Studio


I have a small problem with some tests that I am doing in android studio. I am trying to use the gyro sensor of my android device to rotate an image according to the inclination of the device, using the TYPE_ROTATION_VECTOR sensor.

But I'm having a little problem and that is that when you start the application, the sensor is not activated and although the device rotates the application does not work, but instead after a couple of minutes, this sensor is activated and everything works correctly .

Why could this be happening? Because of what I look for and investigate, I do not give with the solution.

Thank you very much.

The code for the main class is as follows

public class MainActivity extends AppCompatActivity {
SensorManager sensorManager;
Sensor giroscopio;
SensorEventListener escucharGiroscopio;
ImageView ivVasom;
Switch sInterruptorm;

protected void onCreate(Bundle savedInstanceState) {

    ivVasom = (ImageView) findViewById(;
    sInterruptorm = (Switch) findViewById(;

    //Objeto administrador de sensores necesario para utilizar cualquier sensor del dispositivo
    sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

    //Crear objeto del sensor especifico que vamos a utilizar
    giroscopio = sensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR);

    // Create a listener
    escucharGiroscopio = new SensorEventListener() {
        public void onSensorChanged(SensorEvent sensorEvent) {
            float[] rotationMatrix = new float[16];
            SensorManager.getRotationMatrixFromVector(rotationMatrix, sensorEvent.values);

            // Remap coordinate system
            float[] remappedRotationMatrix = new float[16];

            // Convert to orientations
            float[] orientations = new float[3];
            SensorManager.getOrientation(remappedRotationMatrix, orientations);

            for (int i = 0; i < 3; i++) {
                orientations[i] = (float) (Math.toDegrees(orientations[i]));

            Log.d("", "" + orientations[2]);

            ivVasom.setRotation(orientations[2] * -1);


        public void onAccuracyChanged(Sensor sensor, int i) {
    Toast.makeText(this, "e", Toast.LENGTH_SHORT).show();
    sensorManager.registerListener(escucharGiroscopio, giroscopio, SensorManager.SENSOR_DELAY_GAME);

asked by Antonio Agustin 16.12.2018 в 00:36

0 answers