ViewPager like LayoutManager which supports some awesome animations and infinite scroll.
android multiform RadioGroup：复杂样式的单选框，自定义RadioGroup实现radiobutton多行多列嵌套在各种布局中排列布局
Android引导蒙层，安卓新手引导图，引导图层，支持椭圆，圆形，矩形多种形状，一行代码快速搞定新手引导视图，最最轻量级的新手引导库（只有1个类），能够快速的为一个Activity里的任何一个View控件创建一个遮罩式的导航页，支持单个页面，多个引导提示，
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
An Android Animation library which easily add itemanimator to RecyclerView items.
