如何用Facebook graphic api上传视频：
http://developers.facebook.com/blog/post/532/
Keychain保存数据封装：
https://github.com/carlbrown/PDKeychainBindingsController
对焦功能的实现：
http://www.clingmarks.com/?p=612
自定义圆角Switch按件：
https://github.com/domesticcatsoftware/DCRoundSwitch
弹出窗口For iphone and ipad:
https://github.com/chrismiles/CMPopTipView
KVO详解：
http://nachbaur.com/blog/back-to-basics-using-kvo
图片浏览:
https://github.com/bdewey/Pholio
Dropbox实例：
https://github.com/bdewey/dropvault
当地天气预报实例：
https://github.com/aspitz/WxHere
可伸缩的toolBar实例：
https://github.com/aspitz/ToolDrawer
app资源保护相关：
http://aptogo.co.uk/2010/07/protecting-resources/
cocos2d中也可用UIScrollView,UITableView,UIGestureRecognizers
https://github.com/jerrodputman/CCKit
http://www.tinytimgames.com/2011/08/05/introducing-cckit/
开源音视频
doubangoCog
iOS文档导入导出：
http://mobiforge.com/developing/story/importing-exporting-documents-ios
CoreAnimation Demo:
https://github.com/bobmccune/Core-Animation-Demosanimation-sequenceanimation-sequence-with-block
CoreAnimation Dev:
Part 1 – Frame By Frame Sprites With Core Animation
Part 2 – Space Time
Part 3 – Scrolling Hell
Part 4 – Parallax Scrolling
iOS jabber聊天应用开发：客户端开发
http://mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-interface-setup/http:
//mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-custom-chat-view-and-emoticons/
iOS jabber聊天应用开发：服务器搭建
http://mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-server-setup/
iOS快速入门：
http://www.jonathanhui.com/ios
objc学习：
http://www.jonathanhui.com/objective-c
https://github.com/carlbrown/PDKeychainBindingsController
https://github.com/ldandersen/scifihifi-iphone
KeyChain封装，安全存数据：
http://developer.apple.com/library/mac/#documentation/Security/Conceptual/keychainServConcepts/02concepts/concepts.html
http://developer.apple.com/library/ios/#samplecode/GenericKeychain/Introduction/Intro.html#//apple_ref/doc/uid/DTS40007797-Intro-DontLinkElementID_2
iOS声音相关：
http://purplelilgirl.tumblr.com/post/9377269385/making-that-talking-app
http://dirac.dspdimension.com/Dirac3_Technology_Home_Page/Dirac3_Technology.htmlhttp://zeroinverse.com/2010/06/iphone-audio-programming-tips/
