How to define dimension in Android using XML

How to define dimension in Android using XML -

You can create common dimensions to use for various screen elements by defining dimension values in XML.

Here is some examples to define dimension using XML.

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <dimen name="one_pixels">1px</dimen>
 <dimen name="five_dp">5dp</dimen>
 <dimen name="1_inch">1in</dimen>
 <dimen name="1_cm">10mm</dimen>
</resources>