UINavigationController工具栏按钮

Question

I have a UINavigationController that I've set as the rootViewController of my window. In the NIB file I've set it up so that it has a "Bottom Bar" of "Toolbar". In Interface Builder I've added a UIBarButtonItem. This all works great and I can handle the button click fine. When I hit one of the buttons, I push a new view onto the ViewController and that works fine too. One problem, my button disappears when the view is loaded. Now in the subsequent view I can set the bottom bar to be a Toolbar and I see it in Interface Builder, but I cannot add any buttons to it.

I know I'm either missing something obvious or thinking about this incorrectly but how do I add UIBarButtonItems to subsequent views pushed to my nav controller? I'm talking the bar at the bottom, not the nav bar at the top.

Any ideas?

Answer 1

The toolbarItems property on the UIViewController is what you are interested in. You can create UIBarButtonItems programmatically and add them to a new toolBarItems array in viewDidLoad.

- (void)viewDidLoad {
    [super viewDidLoad];
    UIBarButtonItem* editButton = [[[UIBarButtonItem alloc] initWithTitle:@"Edit" style:UIBarButtonItemStyleBordered target:self action:@selector(editAction)] autorelease];
    [self setToolbarItems:[NSArray arrayWithObject:editButton]];
}

Answer 2

This worked better for me:

[[self navigationItem] setLeftBarButtonItem:homeButton];

You can do the same for the right side.