private int DisplayWidth;
 private int DisplayHeight;
 
 public static GameActivity gameActivityInstance;
 
 protected void onCreate(Bundle savedInstanceState)
 {
 super.onCreate(savedInstanceState);
 
 GameActivity.gameActivityInstance = this;
 
 //...
 }
 
  public Cloud(Bitmap Bitmap, int xPosProzentual, int yPosProzentual)
  {
 //GameActivity GameActivity = new GameActivity();  
 DisplayWidth = GameActivity.gameActivityInstance.getDisplayWidth();
 DisplayHeight = GameActivity.gameActivityInstance.getDisplayHeight();
 
 //...
  }