How do I make a picture seem like a radiobutton?

I am attempting to use my own buttons to make an overlay at the bottom of the screen. When a button is pressed it should light up (kind of how a radio button turns green when selected) and it should take you to a new activity while keeping the overlay intact.

There are five buttons that should be put on a black bar and when selected it should turn blue.

If someone could send me in the 开发者_开发百科right direction I would be very grateful. Thank you

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You need StateListDrawables for your buttons.