There is no easy way of showing a calendar with the ability to display events on days, ExtendedCalendarView is meant to solve that problem.
It is generally known that load an unoptimized Dex file at runtime in Android (especially in ART mode) would take a long time. When your App is using MultiDex or PluginFramework, You will find that this problem is hard to bear.
TurboDex was born to solve this problem, Like to opens the god mode for AndroidVM, after using TurboDex, no matter how much Dex file your need to load, it will be finished in a very short time.