ios_ui 学习demo以及参考网站

UIWindow & UIWindowLevel笔记

http://www.cnblogs.com/smileEvday/archive/2012/03/27/2420362.html

demo:https://github.com/pandabo1985/IOS_App_Prac/tree/master/windowDemo

UIView属性学习

http://www.cocoachina.com/newbie/basic/2012/0425/4192.html  

demo:https://github.com/pandabo1985/IOS_App_Prac/tree/master/UIViewDemo
UIViewControl使用
http://blog.csdn.net/mengtnt/article/details/6709930
https://github.com/pandabo1985/IOS_App_Prac/tree/master/UIControlViewDemo