NbButton

相关知识点

• 1 GradientDrawable
• 2 ValueAnimator
• 3 ObjectAnimator
• 4 AnimatorSet
• 5 ViewAnimationUtils.createCircularReveal
• 6 Activity转场淡入淡出

详细介绍请移步

http://blog.csdn.net/tongzhang1314/article/details/79084538