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Editorial Team
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Asked: 2026-05-28T13:33:18+00:00

Stage 1. I have a background Stage 2. I apply an overlay to background

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Stage 1. I have a background

img 1

Stage 2. I apply an overlay to background with a canvas to draw. First I fill the whole area with canvas.drawColor(Color.argb(128,0,0,0))

img 2

Then I need to draw a red transparent circle with color.argb(128,255,0,0) at a specified place, but I want circle red transparency replaced black filling transparency, not added. So, I wanna get this

img 3

but NOT this

img 4

How can I get it?

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1 Answer

  1. Editorial Team

    You can try to use Canvas.clipPath before filling area with black color to exclude area, which will be used later by circle.

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