IOS-学习笔记（4）

1.NSUserDefaults

http://my.oschina.net/u/1245365/blog/294449

http://blog.csdn.net/mad1989/article/details/9106475

IOS 序列化与反序列化NSKeyedUnarchiver

http://my.oschina.net/u/1244156/blog/195360

2.NSSearchPathForDirectoriesInDomains用法

http://blog.csdn.net/xingxing513234072/article/details/24184917

3. 

UICollectionView入门

http://blog.csdn.net/meegomeego/article/details/16953489

4.长按事件-

Gesture Recognizers

http://blog.csdn.net/chun799/article/details/8194893