Question

I have an UITableViewController which I would like to add UIToolbar to with one button. In the

- (void)viewDidLoad;

method of UITableViewController I have:

- (void)viewDidLoad {
[super viewDidLoad];

UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
                                                                             target:self
                                                                             action:@selector(pressButton1:)];

self.navigationItem.title = @"Some title";
self.navigationItem.leftBarButtonItem = button;
 }

Unfortunately I don’t see the toolbar when I run my app.
Any hints? Should I do something more?

Answer 1

The navigationItem property of a view controller is useless if that controller is not displayed inside a UINavigationController.
If your view controller is inside a navigation controller I don’t know what the problem is.
Otherwise you can use an UINavigationItem but you need to create a UINavigationBar yourself.
Either in the Interface Builder (add a UINavigationBar and add a UINavigationItem, then connect the UINavigationItem to a property outlet declared your view controller (you don’t need to connect the Bar).
Or in your code :

UIBarButtonItem *item = [[UIBarButtonItem alloc] 
                             initWithBarButtonSystemItem:UIBarButtonSystemItemAdd 
                             target:self action:@selector(pressButton1:)];

UINavigationItem* navItem = [[UINavigationItem alloc] init];
navItem.rightBarButtonItem = item;
navItem.title = @"Your title";

naviBar = [[UINavigationBar alloc] init];
naviBar.items = [NSArray arrayWithObject:navItem];
naviBar.frame = CGRectMake(0.0, 0.0, self.view.frame.size.width, 44.0);
[self.view addSubview:naviBar];
[navItem release];