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获取当前屏幕显示的viewcontroller
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NavigationController -?(UIViewController?*)getCurrentVC??{??????UIViewController?*result?=?nil;????????????UIWindow?*?window?=?[[UIApplication?sharedApplication]?keyWindow];??????if?(window.windowLevel?!=?UIWindowLevelNormal)??????{??????????NSArray?*windows?=?[[UIApplication?sharedApplication]?windows];??????????for(UIWindow?*?tmpWin?in?windows)??????????{??????????????if?(tmpWin.windowLevel?==?UIWindowLevelNormal)??????????????{??????????????????window?=?tmpWin;??????????????????break;??????????????}??????????}??????}????????????UIView?*frontView?=?[[window?subviews]?objectAtIndex:0];??????id?nextResponder?=?[frontView?nextResponder];????????????if?([nextResponder?isKindOfClass:[UIViewController?class]])??????????result?=?nextResponder;??????else??????????result?=?window.rootViewController;????????????return?result;??} ?
轉載于:https://www.cnblogs.com/haohao-developer/p/5610659.html
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