Example code of Android custom radio and multi-choice drop-down list

Crazy products should make a drop-down list that can choose single or multiple choices. Play with you.

Direct effect:

Implementation scheme:

My idea is to customize a class to inherit popupwindow, and the options in it are implemented by listview and some animations.

Core code:

Project source code: https://github.com/hfrommane/MultiSelectPopupWindows

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