How to restore back button function in UINavigationController?

Question

I created my own leftBarButtonItem:

UIBarButtonItem* homeButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks 
                                                                                    target:self 
                                                                                    action:@selector(homeButtonClicked:)];

self.navigationItem.leftBarButtonItem = homeButton;

How can I programmatically restore the back button to its original functionality?

Answer 1

The back button invokes UINavigationController popViewController, so you can replicate it to the selector homeButtonClicked:.

Answer 2

self.navigationItem.leftBarButtonItem = self.navigationItem.backBarButtonItem;

Answer 3

self.navigationItem.leftBarButtonItem = nil;

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