Difference between android dimension: pt and dp

Question

The documentation says that 160 dp (density-independent) equals 1 inch. And 72 pt is also 1 inch. So I don\'t see why android define a dp measurement while it seems to work

Answer 1

Why should I use dp if I can use pt?

Developers are used to thinking of things in terms of pixels. Density-independent pixels was Android's way of getting close to what developers are used to. That being said, you are welcome to use points, inches, or millimeters if you prefer.