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How to add a right bar button to a navigation bar in iphone

Asked 2011-04-29T12:37:18.453
25

I want to add a right bar button item to the navigation bar, so that on click, it performs certain a function.

I have created the following code to add the right bar button item, but after it is done, the bar button item is not getting displayed in navigation bar:

-(void)viewDidload{
    self.navigationItem.rightBarButtonItem = 
    [[[UIBarButtonItem alloc] 
           initWithBarButtonSystemItem:UIBarButtonSystemItemAdd                                                                                                     
                                target:self
                                action:@selector(Add:)] autorelease];    
}

-(IBAction)Add:(id)sender
{
    TAddNewJourney *j=[[TAddNewJourney alloc]init];
    [app.navigationController pushViewController:j animated:YES];
    [j release];
}
ios objective-c iphone navigationbar
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3

Most of the answers here address setting the UINavigationBar's rightBarButtonItem from within the new VC after it is shown. My need, which was actually answered by János, is to set the UINavigationItem items from the CALLING UIViewController. Hence, the following code (Thanks, János).

// from within self (aka the calling controller):

    UIViewController *c = [[[UIViewController alloc] init...] autorelease];
    c.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(dismissModalViewControllerAnimated:)] autorelease];
    c.navigationItem.title = @"Title Goes Here";
    UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:c] autorelease];
    nav.navigationBarHidden = FALSE;
    [self presentModalViewController:nav animated:YES];

Now, granted, this may seem redundant to János' answer, but I need more rep points in order o mark his response up. ;-)

answered 2012-12-13T21:48:19.667

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