Geek asks and answers

View round buttons

This is a snapshot from an app called "Noom Weight Loss Coach":

enter image description here

I was stunned by this circular view in this app. It can have several buttons (six in this picture, but they can be more or less), and they can be rotated and have different colors.

I have a couple of questions:

  • Is there an existing library that provides this round view?
  • If not, where would you start if you want to build it? I'm just interested in the circular look of the buttons. Rotation is not important.
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1 answer

I would recommend using custom buttons. Derive your class from the view, override onDraw () to change the states of the drawing buttons and listen for onTouch events.

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