Bitmap[] parts = new Bitmap[4];
        Bitmap result = Bitmap.createBitmap(parts[0].getWidth() * 2, parts[0].getHeight() * 2, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(result);
        Paint paint = new Paint();
        for (int i = 0; i < parts.length; i++) {
            canvas.drawBitmap(parts[i], parts[i].getWidth() * (i % 2), parts[i].getHeight() * (i / 2), paint);
        }