How do I apply mathematical operations to Android dimensions?

Question

How do I avoid this hardcoded math...

 10dip
 6dip
 

        

Answer 1

You don't, sorry. Layout XML files do not support expressions. You either:

• Leave it as @dimen/uno_plus_dos, or
• Set your margins in Java code, where you can replace a single resource with a bunch of extra lines of code, or
• Write your own layout preprocessor that handles expressions like this

UPDATE The data binding library supports some operations in its expressions. I am uncertain if it can handle this specific scenario.