How can I change the circle picture of a radio button in both cases checked and unchecked?

I want to customize the radio buttons so instead of being like this "empty circle in case unchecked and 开发者_JS百科green on in case checked"

I want to make the picture in case it's unchecked like this

and in case it's checked like this

How can I achieve that by xml or java??

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Use a state list to define different drawables for different Button states.

Here is an example: Is it possible to change the radio button icon in an android radio button group

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Use state list drawables. There's a tutorial on them here.