pushViewController后，后退按钮不起作用

Question

This is how I am pushing a UIViewController :

[tabController setSelectedIndex:0];
UINavigationController *navController = [tabController selectedViewController];
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle: nil];
NotificationViewController *notificationController = (NotificationViewController*)[mainStoryboard
 instantiateViewControllerWithIdentifier: @"NotificationViewController"];
[navController pushViewController:notificationController animated:YES];
navController.navigationBarHidden = NO;  

When NotificationViewController is visible and I tap Back button, nothing happens. The previous UIViewController had a gesture in UINavigationBar but I have removed it in the UIViewController 's viewWillDisappear . But still the NotificationViewController 's Back button doesn't work.

Answer 1

You probably call the pushViewController before the view is visible.

Make sure you don't call your pushViewController in the viewDidLoad .

Your pushViewController should be used only after viewDidAppear is called if you want your navigation controller to work properly with the back button. Otherwise, the navigation controller will add the title to the previous view controller without the redirection link.