Material Dialogs - beautiful, fluid, and customizable dialogs API.
ProGuard rules for Material Dialogs
Normally, ObjectAnimator in the context it's used in this library (for custom progress drawables) would need special proguard rules so that certain elements aren't removed when your app is built in release mode. Luckily, AAR packages are allowed to specify proguard rules that get included in apps that depend on them. So you do not need to worry about including any Proguard rules in order to ensure progress bars behave well.
A ProGuard configuration is provided as part of the library.
-keep class me.zhanghai.android.materialprogressbar.** { *; }
For more information about Material Dialogs please see the website.