获取当前屏幕显示的viewcontroller
1 //获取当前屏幕显示的viewcontroller 2 - (UIViewController *)getCurrentVC 3 { 4 UIViewController *result = nil; 5 6 UIWindow * window = [[UIApplication sharedApplication] keyWindow]; 7 if (window.windowLevel != UIWindowLevelNormal) 8 { 9 NSArray *windows = [[UIApplication sharedApplication] windows]; 10 for(UIWindow * tmpWin in windows) 11 { 12 if (tmpWin.windowLevel == UIWindowLevelNormal) 13 { 14 window = tmpWin; 15 break; 16 } 17 } 18 } 19 20 UIView *frontView = [[window subviews] objectAtIndex:0]; 21 id nextResponder = [frontView nextResponder]; 22 23 if ([nextResponder isKindOfClass:[UIViewController class]]) 24 result = nextResponder; 25 else 26 result = window.rootViewController; 27 28 return result; 29 }
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