Android: how to use dip (density independent pixel) in code?

Question

How do I specify that an int parameter is in dip? Specifically, how would write the equivalent of:

android:layout_width="50dip" 
android:layout_height="50dip" 

Something like...:

LayoutParams params = new LayoutParams(50, 50)

Answer 1

There is a built-in method that will do this too: TypedValue.applyDimension.

// Convert from 50dip to actual pixels
final int width = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 50, getResources().getDisplayMetrics());
final int height = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 50, getResources().getDisplayMetrics());

LayoutParams params = new LayoutParams(width, height);

You can use this to convert from sp units to pixels as well.