Add Support for Alternate Themes
There should be a setting for changing your theme. The current theme should be considered the Light theme, and additionally there should be a dark theme.
- https://developer.android.com/reference/android/preference/PreferenceScreen.html Reference this for adding the setting
- http://www.javarticles.com/2015/04/android-set-theme-dynamically.html For changing the theme
- https://developer.android.com/guide/topics/ui/themes.html For defining the theme