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Alex Rivera
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My idea is to overlap 2 images on top of each other and upon onTouch, the top image should be made transparent on that touched radius, thus exposing the bottom image. This is how I overlay the 2 images: Bitmap bmOverlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig()); Canvas canvas = new Canvas(bmOverlay); canvas.drawBitmap(bmp1, new Matrix(), null); canvas.drawBitmap(bmp2, new Matrix(), null); I have looked into this post and have a Paint like below to make it transparent: mPaint = new Paint(); mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC)); mPaint.setColor(Color.TRANSPARENT); mPaint.setAntiAlias(true); public void onDraw(Canvas canvas) { canvas.drawCircle(40, 40, 30, mPaint); //hardcode to test } Problem is, I think the circle straight away make the 2 images transparent on the defined radius, how can I make only the top bitmap transparent?
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