[置顶] Objective-c中在ARC环境下使用PerformSelector方法回产生警告

Objective-c中在ARC环境下使用PerformSelector方法回产生警告：PerformSelector may cause a leak because its selector is unknown 

解决办法是：添加这三行代码

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Warc-performSelector-leaks"

#pragma clang diagnostic pop

举例子：

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Warc-performSelector-leaks"

    if ([self.target respondsToSelector:self.action]) {

        [self.target performSelector:self.action withObject:self];

    }

#pragma clang diagnostic pop