How do you achieve a “clock wipe”/ radial wipe effect

Asked Jan 08 '15 at 12:52

Active Jan 08 '15 at 12:52

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My question is similar to this question, but I want to do it in Android. Basically I want to achieve the radial wipe on any image, either through XML or through code.

I am currently trying to do this by using multiple images and swapping them after interval. It looks horrible though. Is there any other way to do it through animation.

edited May 23 '17 at 12:28

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asked Jan 08 '15 at 12:52

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Read about Paint.setShader() and about BitmapShader class – pskink Jan 08 '15 at 13:05
Once you have your shader working, just call Canvas.drawArc in onDraw method of your custom View – pskink Jan 08 '15 at 13:52
and this is a working custom View implementation: http://pastebin.com/XfzMF7Yp – pskink Jan 08 '15 at 14:57

How do you achieve a “clock wipe”/ radial wipe effect

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