getDimension()/getDimensionPixelSize() - mutliplier issue

Question

So I have android 2.3.5 device which is NORMAL/HDPI. I have a dimens.xml in my project:

...
    20sp         


        

Answer 1

Per the Supporting Different Screen Densities training, hdpi is 1.5x normal (mdpi) sizes. As getDimensionPixelSize takes this difference into account when converting into pixels, the returned value will be 1.5x your value in sp.

Note that sp is also dependent on the user's preferred text size and can therefore change to be even larger than 1.5x your expected value.