android - Achieve different text sizes of RadioButton programmatically -

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i'm using different sizes of text different screen resolutions. this, created resource values/dimens.xml , values-sw720dp/dimens.xml. not understand how use values dimens.xml when creating radiobutton programmatically?

radiobutton newradiobutton = new radiobutton(this);  newradiobutton.settextsize(30); //how use values  dimens.xml? newradiobutton.settextcolor(color.parsecolor("#002060"));  radiogroup.addview(newradiobutton, layoutparams); 

getresources().getdimension(r.dimen.test)

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