Arranging buttons in a circle (Android) with lines connecting them

Arranging buttons in a circle (Android) with lines connecting them

I am attempting to create a Fragment for an Android application where I
have either Buttons or ImageButtons programatically arranged in a circle,
with lines drawn from them to the center of the View. However, I have
become stumped as to how to do this.
From my understanding, I can create a custom View in which I can override
the onDraw() to draw the lines, but I cannot put the Buttons in this way.
I can overlay the custom View with a FrameLayout or the like, but I do not
know what type of layout to use so that the buttons can be arranged in a
circle (and that this will work for various screen sizes).
Furthermore, I have to ensure that both the drawn lines and the buttons
will be able to be animated together (that is, for instance, the buttons
and connecting lines can move off-screen at the same rate as if they were
one entity).
I have seen this post, and it is actually very similar to what I would
like to do! : Dynamically arrange Buttons around a Circle . However, I do
not quite have a satisfactory understanding of the answer, particularly
how a Button can be created in an onDraw() with onClick still functioning.
Any suggestions would really be appreciated!