iOS 獲取當前螢幕顯示的viewcontroller
阿新 • • 發佈:2019-02-02
if (![[[self getCurrentVC] class] isEqual:[MineMessageViewController class]]) //獲取當前螢幕顯示的viewcontroller - (UIViewController *)getCurrentVC { UIViewController *rootViewController = [UIApplication sharedApplication].keyWindow.rootViewController; UIViewController *currentVC = [self getCurrentVCFrom:rootViewController]; return currentVC; } - (UIViewController *)getCurrentVCFrom:(UIViewController *)rootVC { UIViewController *currentVC; if ([rootVC presentedViewController]) { // 檢視是被presented出來的 rootVC = [rootVC presentedViewController]; } if ([rootVC isKindOfClass:[UITabBarController class]]) { // 根檢視為UITabBarController currentVC = [self getCurrentVCFrom:[(UITabBarController *)rootVC selectedViewController]]; } else if ([rootVC isKindOfClass:[UINavigationController class]]){ // 根檢視為UINavigationController currentVC = [self getCurrentVCFrom:[(UINavigationController *)rootVC visibleViewController]]; } else { // 根檢視為非導航類 currentVC = rootVC; } return currentVC; }