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Editorial Team
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Asked: 2026-05-29T08:20:58+00:00

I am currently drawing a Bitmap to a SurfaceView using Canvas.drawBitmap() . This seems

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I am currently drawing a Bitmap to a SurfaceView using Canvas.drawBitmap(). This seems to really reduce my framerate and I was wondering what I can do to fix this. I reference a bitmap that I have created outside the onDraw() method. I have made sure that the image is small, opaque, the pixel formats match… etc. When I don’t draw the image the framerate goes up by about 10-15 FPS. Any ideas to speed this up? I experience a noticeable lag.

I create the bitmap outside of everything…

private Bitmap bitmapPlayer = BitmapFactory.decodeResource(getResources(), R.drawable.player);

Then in my onDraw() method…

canvas.drawBitmap(bitmapPlayer, null, drawingRect, null); // drawingRect is the Rect to draw the Bitmap inside of
// ... Rest of drawing code
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1 Answer

  1. Editorial Team

    I can only assume you are doing something logic heavy in your draw call, If you don’t see any differences between your code and the following example,

    http://www.droidnova.com/playing-with-graphics-in-android-part-iii,176.html

    I would start to take a look into the following, and utilizing the graphics hardware for your drawing.

    http://developer.android.com/resources/articles/glsurfaceview.html

    Hope this helps

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