Question

In my viewDidLoad method I have the following:

navigBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonSystemItemAction target:self action:@selector(btnClicked:)];
[self.view addSubview:navigBar];

The button does not show up at all! What am I missing?

Answer 1

// create the navigation bar and add it to the view
UINavigationBar *navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
[self.view addSubview:navigationBar];

// create a button
UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonSystemItemAction target:self action:@selector(btnClicked:)];

// create a UINavigationItem and add the button in the right hand side
UINavigationItem *navItem = [[UINavigationItem alloc] initWithTitle:nil];
navItem.rightBarButtonItem = button;

// add the UINavigationItem to the navigation bar
[navigationBar pushNavigationItem:navItem animated:NO];