How to get the Font Size of Text View in Android -

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i have created textview , assign text size 32pt. want increase text size on button click.

i have written following code, unable understand how current size of text

 btnincreasefont.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             tvnews.settextscalex(50);         }     });

kindly guide me

use:

textview.settextsize(getresources().getdimension(r.dimen.textsize));

sample dimensions.xml

<?xml version="1.0" encoding="utf-8"?> <resources> <dimen name="textsize">15sp</dimen> </resources>

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