https://blog.youkuaiyun.com/QiLong_Shizh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/QiLong_Shi/article/details/53652306https://blog.youkuaiyun.com/QiLong_Shi/article/details/53652306QiLong_ShiThu, 15 Dec 2016 00:34:20 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53350453https://blog.youkuaiyun.com/QiLong_Shi/article/details/53350453QiLong_ShiSat, 26 Nov 2016 13:43:08 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340523https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340523QiLong_ShiFri, 25 Nov 2016 21:30:02 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340436https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340436QiLong_ShiFri, 25 Nov 2016 21:17:26 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340382https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340382QiLong_ShiFri, 25 Nov 2016 21:09:13 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340345https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340345QiLong_ShiFri, 25 Nov 2016 21:03:15 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340320https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340320QiLong_ShiFri, 25 Nov 2016 20:59:37 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340244https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340244QiLong_ShiFri, 25 Nov 2016 20:47:38 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340239https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340239QiLong_ShiFri, 25 Nov 2016 20:46:35 +0800 没有存储任何内存地址的指针就称为空指针(NULL指针)。2> 空指针就是被赋值为nil的指针，在没有被具体初始化之前，为nil。1.2野指针“野指针”不是nil指针，是指向”垃圾”内存（不可用内存）的指针。野指针是非常危]]>https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340233https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340233QiLong_ShiFri, 25 Nov 2016 20:44:49 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340218https://blog.youkuaiyun.com/QiLong_Shi/article/details/53340218QiLong_ShiFri, 25 Nov 2016 20:43:32 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53339964https://blog.youkuaiyun.com/QiLong_Shi/article/details/53339964QiLong_ShiFri, 25 Nov 2016 20:20:46 +0800https://blog.youkuaiyun.com/QiLong_Shi/article/details/53339933https://blog.youkuaiyun.com/QiLong_Shi/article/details/53339933QiLong_ShiFri, 25 Nov 2016 20:19:08 +0800A–>B–>C 返回 时要求 C直接跳转至A 2种解决方案： 1、在C中写个指针，指向A，使用方法popToViewController直接调至A 本人不喜欢指针传来传去，寻求良友找到另一种解决方案 2、在C中，将navigationController的Views队列中的B删除，然后 popViewControlle]]>https://blog.youkuaiyun.com/QiLong_Shi/article/details/53326517https://blog.youkuaiyun.com/QiLong_Shi/article/details/53326517QiLong_ShiThu, 24 Nov 2016 21:48:14 +0800跟#import””又什么区别？ 1>#import和#include都能完整地包含某个文件的内容，#import能防止同一个文件被包含多次2>@class仅仅是声明一个类名，并不会包含类的完整声明;@class还能解决循环包含的问题3>#import <>用来包含系统自带的文件，#import “”用来包含自定义的文]]>