Spiel zeigt kein Hintergrundbild

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Jun 14, 2015 10:03:29 PM via Website

Hallo,

ich habe ein Problem nämlich mein Spiel reagiert im Hintergrund aber es zeigt kein
Hintergrundbild an. Hier die Codes, bitte um Hilfe. Danke schonmal vorraus.

GamePanel:

import android.content.Context;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class GamePanel extends SurfaceView implements SurfaceHolder.Callback
{
public static final int WIDTH = 856;
public static final int HEIGHT = 480;
private MainThread thread;
private Background bg;

public GamePanel(Context context)
{
    super(context);


    //add the callback to the surfaceholder to intercept events
    getHolder().addCallback(this);

    thread = new MainThread(getHolder(), this);

    //make gamePanel focusable so it can handle events
    setFocusable(true);
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height){}

@Override
public void surfaceDestroyed(SurfaceHolder holder){
boolean retry = true;
while(retry)
{
try{thread.setRunning(false);
thread.join();

      }catch(InterruptedException e){e.printStackTrace();}
      retry = false;
  }

}

@Override
public void surfaceCreated(SurfaceHolder holder){

  bg = new Background(BitmapFactory.decodeResource(getResources(), R.drawable.grassbg1));
  bg.setVector(-5);
  //we can safely start the game loop
  thread.setRunning(true);
  thread.start();

}
@Override
public boolean onTouchEvent(MotionEvent event)
{
return super.onTouchEvent(event);
}

public void update()
{

    bg.update();
}
@Override
public void draw(Canvas canvas)
{
    final float scaleFactorX = getWidth()/WIDTH;
    final float scaleFactorY = getHeight()/HEIGHT;
    if(canvas!=null) {
        final int savedState = canvas.save();
        canvas.scale(scaleFactorX, scaleFactorY);
        bg.draw(canvas);
        canvas.restoreToCount(savedState);
    }
}

}

Background:

import android.graphics.Bitmap;
import android.graphics.Canvas;

public class Background {

private Bitmap image;
private int x, y, dx;

public Background(Bitmap res)
{
    image = res;
}
public void update()
{
    x+=dx;
    if(x<-GamePanel.WIDTH){
        x=0;
    }
}
public void draw(Canvas canvas)
{
    canvas.drawBitmap(image, x, y,null);
    if(x<0)
    {
        canvas.drawBitmap(image, x+GamePanel.WIDTH, y, null);
    }
}
public void setVector(int dx)
{
    this.dx = dx;
}

}