android 将DIP转为PIXEL
It uses pixels, but I'm sure you're wondering how to use dips instead. The answer is in TypedValue.applyDimension(). Here's an example of how to convert dips to px in code:

// Converts 14 dip into its equivalent pxResources r = getResources();float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 14, r.getDisplayMetrics());

原文地址：http://stackoverflow.com/questions/2406449/does-setwidthint-pixels-use-dip-or-px