android+Path+Paint+PathEffect

 First: Path has got nothing to do with PathEffect

Related Links:

http://blog.csdn.net/stevenhu_223/article/details/9229337  //best--Path

http://www.cnblogs.com/tt_mc/archive/2012/12/07/2807518.html //general--Path

http://androidbin.iteye.com/blog/1487567 //good clear --PathEffect

http://blog.csdn.net/lee576/article/details/7865121  //good -- PathEffect