ios appdelegate中擷取當前顯示頁

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ios appdelegate中擷取當前顯示頁

網上有很多種方法，但是都不好使，找到了這個好使的，和大家分享下。

 

 1 -(UIViewController *)currentViewController 2 { 3     UIViewController * currVC = nil; 4     UIViewController * Rootvc = self.window.rootViewController ; 5     do { 6         if ([Rootvc isKindOfClass:[UINavigationController class]]) { 7             UINavigationController * nav = (UINavigationController *)Rootvc; 8             UIViewController * v = [nav.viewControllers lastObject]; 9             currVC = v;10             Rootvc = v.presentedViewController;11             continue;12         }else if([Rootvc isKindOfClass:[UITabBarController class]]){13             UITabBarController * tabVC = (UITabBarController *)Rootvc;14             currVC = tabVC;15             Rootvc = [tabVC.viewControllers objectAtIndex:tabVC.selectedIndex];16             continue;17         }18 //        else if ([Rootvc isKindOfClass:[XXXCustom class]]){19 //            XXXCustom * tabVC = (XXXCustom *)Rootvc;20 //            currVC = tabVC;21 //            Rootvc = tabVC.selectedViewController;22 //            continue;23 //        }24     } while (Rootvc!=nil);25     26     27     return currVC;28 }

 

ios appdelegate中擷取當前顯示頁