iOS瘋狂詳解之warning:performSelector may cause a leak because its selector is unknown

標籤：ios開發   performselector   警告   爆黃   

主要是警告資訊，在非ARC項目中沒有這個警告。如果是在某一處修改只需要加入下列代碼：

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
    [self.ticketTarget performSelector: self.ticketAction withObject: self];//此處是你調用函數的地方

#pragma clang diagnostic pop

如果在程式中多處使用，可以寫一個宏定義，如下：
#define SuppressPerformSelectorLeakWarning(Stuff) \
    do { \
        _Pragma("clang diagnostic push") \
        _Pragma("clang diagnostic ignored \"-Warc-performSelector-leaks\"") \
        Stuff; \
        _Pragma("clang diagnostic pop") \
    } while (0)
如果沒有返回結果，可以直接按如下方式調用：

SuppressPerformSelectorLeakWarning(
    [_target performSelector:_action withObject:self]
);
如果要返回結果，可以按如下方式調用:

id result;
SuppressPerformSelectorLeakWarning(
    result = [_target performSelector:_action withObject:self]

);

更多iOS瘋狂詳解:http://blog.csdn.net/wanglongblog

iOS瘋狂詳解之warning:performSelector may cause a leak because its selector is unknown