How do I manually set the "Back" destination in iOS apps

Question

I have a UIViewController called 'detailViewController'.

This view controller is accessed through multiple different segues using the push segue.

The problem I am facing is that the back button on the detailViewController takes the user back to the previous view controller (as it should), however I would like the back button to take the user to the masterViewController (the default UIViewController in the app).

How do I do this?

I have tried changing the segue types however that didn't really do anything at all.

Peter

Answer 1

The method you're looking for is UINavigationController's popToRootViewControllerAnimated:

From the documentation: "Pops all the view controllers on the stack except the root view controller and updates the display."

You'll need to create a custom back button. You can't afaik override the back button's functionality.

So something like:

UIButton *myBackButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myBackButton addTarget:self action:@selector(popToRoot:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *myCustomBackButtonItem = [[UIBarButtonItem alloc] initWithCustomView:myBackButton];
[self.navigationItem setLeftBarButtonItem:myCustomBackButtonItem];

and then the implementation of popToRoot: would look like:

- (void)popToRoot:(id)sender
{
    [self.navigationController popToRootViewControllerAnimated:YES];
}