Android Open Source - Marble-Run Accelero

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Back to project page Marble-Run.

License

The source code is released under:

Apache License

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Java Source Code

package nttu.edu.handler;
/*w  ww  .  ja  va 2  s .c om*/
import nttu.edu.activities.PlayActivity;
import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.view.WindowManager;

public class Accelero implements SensorEventListener{
  public static float X, Y, Z;
  private SensorManager manager;
  private Sensor meter;
  private boolean successful;
  private int screenRotation;
  private WindowManager windowManager;
  
  private static final int[][] AXIS = {  //ROTATION in order: 0, 90, 180, 270
    {1, -1, 0, 1}, {-1, -1, 1, 0}, {-1, 1, 0, 1}, {1, 1, 1, 0}
  };
  
  public Accelero() {
    successful = false;
  }
  
  public void onAccuracyChanged(Sensor arg0, int arg1) {
  }
  
  public void onSensorChanged(SensorEvent e) {
    screenRotation = windowManager.getDefaultDisplay().getRotation(); 
    if (e.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
      final int[] axis = AXIS[screenRotation];
      X = (float) (axis[0]) * e.values[axis[2]];
      Y = (float) (axis[1]) * e.values[axis[3]];
      Z = e.values[2];
    }
  }
  
  public void resume(PlayActivity parent){
    windowManager = (WindowManager) parent.getSystemService(Activity.WINDOW_SERVICE);
    manager = (SensorManager) parent.getSystemService(Context.SENSOR_SERVICE);
    if (manager.getSensorList(Sensor.TYPE_ACCELEROMETER).size() > 0) meter = manager.getSensorList(Sensor.TYPE_ACCELEROMETER).get(0);
    if (!(successful = manager.registerListener(this, meter, SensorManager.SENSOR_DELAY_GAME)))
      throw new RuntimeException("Couldn't register SensorEventListener.");
  }
  
  public void pause(){
    if (successful)
      manager.unregisterListener(this, meter);
  }
}

Java Source Code List