Android how to make button text bold when pressed or focussed

Question

I want to change the text inside a button to be bold when the button is highlighted or pressed. I currently use a xml file to define the button and use the XML to change how

Answer 1

Attention! See update below

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You could create your own style.xml in which you define the text style. In your selector you can reference to the style. style.xml

And in your selector

Update 2020: My answer is more than 10 years old. It doesn´t work anymore!