Segmented 标签栏 切换效果

转载：http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2014/0512/1615.html

       http://www.it165.net/pro/html/201407/17798.html

       http://blog.csdn.net/qduningning/article/details/37935227

DEMO下载：http://download.csdn.net/detail/androidsj/9434612