Android: creating a Bitmap with SurfaceView content

android image-processing bitmap save surfaceview
Nicolas P. picture Nicolas P. · Jan 20, 2011 · Viewed 23k times · Source

I'm afraid to already have the unfortunate answer to this question but just in case... I'm using a SurfaceView to do some image processing with bitmaps (lights and colors modifications) and I would need to import the modified bitmap (i.e. the content of the SurfaceView) in a new bitmap so that I can save it as an image file.

I've been looking around and it seems that it's possible to get a bitmap from View.getDrawingCache() but it doesn't work with SurfaceView. All I get is an empty bitmap.

Is there any solution to this?

Thanks

Answer

idbrii picture idbrii · Jan 20, 2011

Can you draw your SurfaceView onto a Canvas that's backed by a Bitmap?

    // be sure to call the createBitmap that returns a mutable Bitmap
    Bitmap b = Bitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888); 
    Canvas c = new Canvas(b);
    yourSurfaceView.draw(c);

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