iphone设备尺寸
iphone3GS: 320*480(像素), 厚度12.3mm(3.5inch)
iphone4/4s: 320*480(像素), 厚度9.3mm(3.5inch) @2x
iphone5/5s: 320*568(像素), 厚度7.6mm(4.0inch) @2x
iphone6: 375*667(像素), 厚度6.9mm(4.7inch) @2x
iphone6plus: 414*736(像素), 厚度7.1mm(5.5inch) @3x
沙盒中含有三个文件,分别是:Document, Library, Temp;
Library中包含有Cache文件;
AFNetwork是一个轻量级的网络请求api类,是以NSURLConnection,NSOperation和其他方法为基础的;
http://www.360doc.com/content/14/1119/10/19175681_426342465.shtml
http://blog.csdn.net/he_jiabin/article/details/
http://www.cnbeta.com/articles/301331.htm
http://www.douban.com/note/358369073/?type=like
http://www.docin.com/p-287519614.html
http://edu.51cto.com/lesson/id-18523.html
http://blog.csdn.net/buyicn/article/details/8479221
【网址】https://developer.apple.com/library/mac/navigation/
http://blog.csdn.net/pistolove/article/details/42041757