Question

Bitmap top;
int x;
public ViewExample() {
    top = BitmapFactory.decodeResource(getResources(), R.drawable.top);

    Thread thread = new Thread(){
        public void run(){
            while(true){
                x++;
                postInvalidate();
            }
        }
    };
    thread.start();
}

@Override
protected void onDraw(Canvas c) {
    c.drawBitmap(top, x, 0, null);
}

I try to draw movable bitmap fast , what to do to make draw fast? (it is very slow and not smooth)

Answer 1

if you are using View class to create surface it will be very slow , so use SurfaceView .

Surface view is used for create frequently changing surface .

Go Here for learn more .