import androidx.appcompat.app.AppCompatActivity;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements SensorEventListener {
    private ImageView ivDinamic;
    private TextView tvDegree;
    private float current_degree = 0f;
    private SensorManager sensorManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
    }
    private void init()
    {
        ivDinamic = findViewById(R.id.ivDinamic);
        tvDegree = findViewById(R.id.tvDegree);
        sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

    }

    @Override
    protected void onResume() {
        super.onResume();
        sensorManager.registerListener(this,sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),SensorManager.SENSOR_DELAY_GAME);

    }

    @Override
    protected void onPause() {
        super.onPause();
        sensorManager.unregisterListener(this);
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        float degree = Math.round(event.values[0]);

        tvDegree.setText("Degree from North: " + Float.toString(degree) + " degrees");


        RotateAnimation ra = new RotateAnimation(current_degree, -degree, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);

        ra.setDuration(210);

        ra.setFillAfter(true);

        ivDinamic.startAnimation(ra);
        current_degree = -degree;

    }

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

    }
}