Roboto Calendar View is a simple and good component to provide customizable calendar for general usage. In my app I need to show a calendar and mark the days that have appointments. A very simple functionality at this moment.
I have found the Roboto Calendar View in github at RobotoCalendarView (Copyright 2014 Marco Hernaiz Cao).
There are some cool fonts in the project (which I removed to reduce APK size) that you can use to change the interface to meet your needs.
You can find more information on usage in the project page on Github.
In the near future I will need to improve this calendar or use another component to provide more detailed information to the user, but for now it is just fine.
AdvogadoAG – RobotoCalendarView