ios 防止出现“PerformSelect 可能导致泄漏，因为其选择器未知”的警告
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to prevent warning from "PerformSelect may cause a leak because its selector is unknown"
提问by Rayer
Possible Duplicate:
performSelector may cause a leak because its selector is unknown
I did a NSDictionary to convert my input(NSString) to selector. The "selector map" is looked as follows :
我做了一个 NSDictionary 将我的输入（NSString）转换为选择器。“选择器地图”如下所示：
[self setCmdSelectorMap:[NSDictionary dictionaryWithObjectsAndKeys:
[NSValue valueWithPointer:@selector(doOpenBrowserByString:)], @"openBrowser",
[NSValue valueWithPointer:@selector(syncData:)], @"sync",
[NSValue valueWithPointer:@selector(getCachedString:)], @"getCachedString",
nil]];
When I try to fetch one of these selector and perform it by follows, it cause a warning :
当我尝试获取这些选择器之一并按以下方式执行时，它会导致警告：
sel = [[_cmdMap objectForKey:command] pointerValue];
NSLog(@"selector determined : %@", NSStringFromSelector(sel));
[self performSelector:sel withObject:arguments];
The warning says : PerformSelector may cause a leak because its selector is unknown. Is there any way to prevent this warning from occurring? or is there any "safer" way to perform such an action?
警告说： PerformSelector 可能会导致泄漏，因为它的选择器未知。有什么办法可以防止这种警告发生吗？或者是否有任何“更安全”的方式来执行这样的操作？
Thanks guys :)
谢谢你们 ：）
回答by Alexander Zakatnov
Just use this:
只需使用这个：
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
[self performSelector:sel withObject:arguments];
#pragma clang diagnostic pop
