单例的创建与销毁 - P700.CN

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http://p700.cn/a/oc/274.html

直接看代码 staticXHAdManagerinstance=nil;staticdispatch_once_toneToken;//单例+(XHAdManager)shareManager{dispatch_once(oneToken,^{instance=[[XHAdManageralloc]init];});returninstance;}//销毁单例+(void)deleteManager{oneToken=0;ins