1.关于new Handler()与new Handler(Looper.getMainLooper())区别
Handler理解相关
http://www.cnblogs.com/xpxpxp2046/archive/2012/04/13/2445355.html
http://www.cnblogs.com/xpxpxp2046/archive/2012/04/13/2445395.html
2.daemon线程用在什么场景
https://blog.csdn.net/losetowin/article/details/51747395
https://blog.csdn.net/listron/article/details/50682229
3.timerTask
TimerTask类和Timer类的cancel()方法详解
https://blog.csdn.net/qq_30493075/article/details/77101496
使用全解：
https://www.cnblogs.com/lingiu/p/3782813.html
4.runnable在主线程吗
https://blog.csdn.net/ni357103403/article/details/50157117
http://www.cnblogs.com/ghj1976/archive/2011/05/06/2038516.html
5.TextPaint
6.ObjectAnimator
ObjectAnimator.ofFloat
https://blog.csdn.net/harvic880925/article/details/50598322
原文：https://www.cnblogs.com/buder-cp/p/9291873.html