Ios – Dismiss pushed view from within Navigation Controller

iosiphoneuiviewcontrollerxcode

I have a Navigation Controller with a View Controller displaying a button. The button is linked to another View Controller using a push segue which automatically adds a top navigation bar with a back button. This all works fine. Pressing the back button slides off the 2nd view and returns to the 1st.

I have a button on the 2nd View Controller, that when pressed runs some code and a delegate call back to the 1st View Controller. Again this works fine.

Now I just need to dismiss the 2nd pushed View from code as if the back button was pressed.
I have tried using dismissModalViewCcontrollerAnimated and dismissViewControllerAnimated, however they both dismiss the whole Navigation Controller which removes view 2 and 1 (returning bak to my main menu).

Whats the correct way to slide off the view.

Best Answer

Obtain a reference to your UINavigationController and call

- (UIViewController *)popViewControllerAnimated:(BOOL)animated

on it.

Related Solutions

Ios – iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationFormSheet

This has been classified as "works as intended" by Apple engineers. I filed a bug for this a while back. Their reasoning is that the user is often going to be entering data in a modal form so they are trying to be "helpful" and keep the keyboard visible where ordinarily various transitions within the modal view can cause the keyboard to show/hide repeatedly.

edit: here is the response of an Apple engineer on the developer forums:

Was your view by any chance presented with the UIModalPresentationFormSheet style? To avoid frequent in-and-out animations, the keyboard will sometimes remain on-screen even when there is no first responder. This is not a bug.

This is giving a lot of people problems (myself included) but at the moment there doesn't seem to be a way to work around it.

UPDATE:

In iOS 4.3 and later, you can now implement `-disablesAutomaticKeyboardDismissal' on your view controller to return NO:

- (BOOL)disablesAutomaticKeyboardDismissal {
    return NO;
}

This fixes the issue.

Ios – back button callback in navigationController in iOS

William Jockusch's answer solve this problem with easy trick.

-(void) viewWillDisappear:(BOOL)animated {
    if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) {
       // back button was pressed.  We know this is true because self is no longer
       // in the navigation stack.  
    }
    [super viewWillDisappear:animated];
}

Best Answer

Related Solutions

Ios – iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationFormSheet

Ios – back button callback in navigationController in iOS

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