Error inflating class Button in Android

Question

I have an application with min sdk 16 up to 23. I want to use Material design as much as possible. It also has to be fullscreen app. AppCompat support library is included. N

Answer 1

As we discussed in the comment section, the problem is that the inflater somehow fails to recognize ?attr/font_medium, thus raising an exception.

You can use the dimens.xml file to specify custom dimensions, like this:

 
    14sp
    16sp
    18sp

and then in your styles.xml you refer to these values like this:

As every other resource, dimens.xml can be placed in the according resource folders to accomodate to a specific device configuration (screen dimensions, density, language, etc.).