//獲取當前屏幕顯示的viewcontroller ?,有導航控制器時為當前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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