AndResGuard is a tool to proguard resource for Android, just like ProGuard in Java. It can change res/drawable/wechat to r/d/a, and rename the resource file wechat.png to a.png. Finally, it repackages the apk with 7zip, which can reduce the package size obviously.
Small solution that gives you the easy way to implement customized slide-to-unlock view into your app. SlideLayout provides additional methods and classes for changing component's behavior and appearance: various orientations, transitions, directions etc.
This library provides you Material Design forms with animation.