timer 没释放。代码我给你改好了

[JobsKits]

【你无非是想单例，是对的，但是单例化和销毁是下面这么写的，只有销毁才会调用dealloc，这个时机才会关闭timer】

• (void)dealloc{ NSLog(@"%@",JobsLocalFunc); if (timer) { dispatch_source_cancel(timer); } // [[NSNotificationCenter defaultCenter] removeObserver:self]; } /// 单例化和销毁 +(void)destroySingleton{ static_codeViewOnceToken = 0; static_codeView = nil; }

static WMZCodeView *static_codeView = nil; static dispatch_once_t static_codeViewOnceToken; +(instancetype)sharedInstance{ dispatch_once(&static_codeViewOnceToken, ^{ static_codeView = WMZCodeView.new; });return static_codeView; }