Android custom view to achieve water ripple effect

Introduction: controls for water ripple spreading effect are still common in app, such as Netease cloud music song recognition and nearby search scenes.

Let's see the effect:

Implementation idea: first, divide the spacing between the maximum circle radius and the minimum circle radius into several equal parts. From the inside to the outside, the paint transparency decreases in turn to draw concentric circles, and then constantly change the radius of these concentric circles and delay redrawing for a certain time to achieve the dynamic painting effect of spreading out.

GitHub address: https://github.com/xing16/WaveView

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.