[iOS] Set right navigation bar item button

iOSNavBarButtonItem

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStylePlain target:self action:@selector(done)];
    [self.navigationItem setRightBarButtonItem:doneButton];
}

- (void)done
{
    [self dismissViewControllerAnimated:YES completion:nil];
}