Question

Ok I was looking at the iPhone iCal app, and was curious whether that top bar is a navigation bar or a toolbar? ive tried using both, but also i cannot figure out how to change the size of the buttons to be as small as the + button in the top right… very confused.. I’m assuming its a navigation bar, but when i read the description of the navigation bar, it said that whenever you are to add a button or item onto the bar, you cannot connect it directly… no idea how else to do it… but anyone wanna help with this issue?

Answer 1

If you are mentioning about this one
It is not UITabBar , it is UINavigationBar, the button on extreme left is inbuilt backbutton of UINavigationBar and the that at right is an extra button that you can add , its clearly shown in this question , and to change the type (ie, + button) you can simply change the button style using

 UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Done" 
                                                                    style:UIBarButtonSystemItemAdd target:nil action:nil];

adding button to UINavigationBar

UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Done" 
    style:UIBarButtonSystemItemAdd target:nil action:nil];
rightButton.width=10;
rightButton.height=10;
    UINavigationItem *item = [[UINavigationItem alloc] initWithTitle:@"Title"];
    item.rightBarButtonItem = rightButton;
    item.hidesBackButton = YES;
    [bar pushNavigationItem:item animated:NO];
    [rightButton release];
    [item release];

But normally you would have a navigation controller, enabling you to write:

UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
    style:UIBarButtonSystemItemAdd target:nil action:nil];
self.navigationItem.rightBarButtonItem = rightButton;
[rightButton release];

Hope this helps,
regards