防止警告"PerformSelect可能导致泄漏,因为它的选择器未知"

Question

可能重复:
performSelector可能导致泄漏,因为其选择器未知

我做了一个NSDictionary来将我的输入(NSString)转换为选择器."选择器地图"看起来如下:

[self setCmdSelectorMap:[NSDictionary dictionaryWithObjectsAndKeys: 
                         [NSValue valueWithPointer:@selector(doOpenBrowserByString:)], @"openBrowser",
                         [NSValue valueWithPointer:@selector(syncData:)], @"sync",
                         [NSValue valueWithPointer:@selector(getCachedString:)], @"getCachedString",
                         nil]];

当我尝试获取其中一个选择器并按如下方式执行时,它会引发警告:

sel = [[_cmdMap objectForKey:command] pointerValue];
NSLog(@"selector determined : %@", NSStringFromSelector(sel));
[self performSelector:sel withObject:arguments];

警告说:PerformSelector可能导致泄漏,因为它的选择器未知.有没有办法防止这种警告发生？或者是否有任何"更安全"的方式来执行此类操作？

多谢你们 :)

Answer 1

只要用这个:

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
[self performSelector:sel withObject:arguments];
#pragma clang diagnostic pop