Question

Using the below code I am implementing my own Navigation Bar. For some reason when I run my app nothing is showing up for a back (left-arrow) button on the navigation bar. However if I change the code to leftBarButtonItem, the button does appear.

// Draw Navigation Bar
UINavigationBar *navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
[navigationBar setDelegate:self];

UINavigationItem *navigationItem = [[UINavigationItem alloc] init];

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Back"
                                                                style:UIBarButtonItemStylePlain
                                                               target:nil 
                                                               action:nil];
navigationItem.backBarButtonItem = backButton;
[navigationBar pushNavigationItem:navigationItem animated:NO];
[self.view addSubview:navigationBar];
[navigationBar release];
[backButton release];

Answer 1

Figured it out:

// Draw Navigation Bar
UINavigationBar *navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
[navigationBar setDelegate:self];

UINavigationItem *navigationItem = [[UINavigationItem alloc] init];

UIButton *button = [UIButton buttonWithType:101];
// add selector
[button setTitle:@"Back" forState:UIControlStateNormal];

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:button];

navigationItem.leftBarButtonItem = backButton;
[navigationBar pushNavigationItem:navigationItem animated:NO];
[self.view addSubview:navigationBar];
[navigationBar release];
[backButton release];