How to set text size using dimension from xml at runtime programmatically?

Question

In dimens.xml, I have:

<dimen name="text_medium">18sp</dimen> 

In runtime, I get this value and set the text size of a text view:

int size = context.getResources().getDimensionPixelSize(R.dimen.text_medium); textView.setTextSize(size). 

On a 10″ tablet (1280 x 800), everything is ok; but on a phone (800 x 480), the text view has a very large font. On the tablet, the size equals 18; on the phone, it's 27.

If I set the size manually by:

textView.setTextSize(size) 

the size is normal on both devices.

Answer 1

Add dimension in dimens.xml:

   <dimen name="text_medium">18sp</dimen> 

Set the size in code:

textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, getResources().getDimension(R.dimen.text_medium));