iPhone – dismiss multiple ViewControllers

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Yes. there are already a bunch of answers, but I’m just going to add one to the end of the list anyway. The problem is that we need to get a reference to the view controller at the base of the hierarchy. As in @Juan Munhoes Junior’s answer, you can walk the hierarchy, but there may be different routes the user could take, so that’s a pretty fragile answer. It is not hard to extend this simple solution, though to simply walk the hierarchy looking for the bottom of the stack. Calling dismiss on the bottom one will get all the others, too. 

-(void)dismissModalStack {
    UIViewController *vc = self.presentingViewController;
    while (vc.presentingViewController) {
        vc = vc.presentingViewController;
    }
    [vc dismissViewControllerAnimated:YES completion:NULL];
}

This is simple and flexible: if you want to look for a particular kind of view controller in the stack, you could add logic based on [vc isKindOfClass:[DesiredViewControllerClass class]].

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