Hintergrundbild

//--set background image
    	
    	//get display values
    	Display display = ((WindowManager)getSystemService(this.WINDOW_SERVICE)).getDefaultDisplay();
    	
    	LinearLayout llMain = (LinearLayout)findViewById(R.id.llMain);
    	
    	//load Bitmap
    	Bitmap bgImage = BitmapFactory.decodeResource(getResources(), R.drawable.bg_bike_on_street);
    	
    	//calculate bitmap size
    	int newWidth =  display.getWidth();
    	float factor = (float)newWidth/(float)bgImage.getWidth();
    	float newHeight = factor*bgImage.getHeight();
    	
    	//create resized bitmap
    	bgImage = Bitmap.createScaledBitmap(bgImage, newWidth, (int)newHeight, false);
    	
    	//set bitmap parameter
    	BitmapDrawable bgImageDrawable = new BitmapDrawable(bgImage);
    	bgImageDrawable.setDither(false);
    	bgImageDrawable.setGravity(Gravity.TOP|Gravity.LEFT|Gravity.FILL_HORIZONTAL);
    	
    	//set background color and image
    	llMain.setBackgroundColor(Color.WHITE);
    	llMain.setBackgroundDrawable(bgImageDrawable);