An Android app for measuring and testing FontMetrics

This app was originally created and used for these Stack Overflow questions:

• http://stackoverflow.com/questions/27631736/meaning-of-top-ascent-baseline-descent-bottom-and-leading-in-androids-font
• http://stackoverflow.com/a/42091739/

I decided to put the project on GitHub to make it easier to experiment with, and also so that other people will improve it.

If you want to help, here are some improvements that are needed:

• Hide the keyboard after clicking the update button.
• Improve the layout to work on different sized devices. I'm guessing it may clip some views for small devices or in landscape orientation.
• Add a few custom (free) fonts and add an option to select different fonts.