主要是警告信息，在非ARC项目中没有这个警告。如果是在某一处修改只需要加入下列代码：
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
[self.ticketTarget performSelector: self.ticketAction withObject: self];//此处是你调用函数的地方
#pragma clang diagnostic pop
如果在程序中多处使用，可以写一个宏定义，如下：
#define SuppressPerformSelectorLeakWarning(Stuff) \
do { \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Warc-performSelector-leaks\"") \
Stuff; \
_Pragma("clang diagnostic pop") \
} while (0)
如果没有返回结果，可以直接按如下方式调用：
SuppressPerformSelectorLeakWarning(
[_target performSelector:_action withObject:self]
);
如果要返回结果，可以按如下方式调用:
id result;
SuppressPerformSelectorLeakWarning(
result = [_target performSelector:_action withObject:self]
);
更多iOS疯狂详解:http://blog.csdn.net/wanglongblog
iOS疯狂详解之warning:performSelector may cause a leak because its selector is unknown
原文：http://blog.csdn.net/wanglongblog/article/details/41943303
