Mr. Alfonz is here to help you build your Android app, make the development process easier and avoid boilerplate code.
Alfonz is a multi purpose library split into small modules (something like Android Support Library). Some of them depend on other modules or 3rd party libraries (RxJava, Retrofit, OkHttp), but in general I try to keep Alfonz simple and independent from other libs as much as possible.
ContactAutoCompleteTextView is a view which allows the user to search across all his contacts to get email or phone number.
The RangeBar is an enhanced SeekBar widget in vertical. It provides 2 thumbs between 0-N value.