How to add a button to UINavigationBar?

Question

How to add a button to UINavigationBar programmatically?

Answer 1

Why not use the following: (from Draw custom Back button on iPhone Navigation Bar)

// Add left
UINavigationItem *previousItem = [[UINavigationItem alloc] initWithTitle:@"Back title"];
UINavigationItem *currentItem = [[UINavigationItem alloc] initWithTitle:@"Main Title"];
[self.navigationController.navigationBar setItems:[NSArray arrayWithObjects:previousItem, currentItem, nil] animated:YES];

// set the delegate to self
[self.navigationController.navigationBar setDelegate:self];