UIBarButtonItem not showing up in UINavigationController

Question

I'm trying to add 2 buttons to a UINavigationController's navigation-bar:

1) the standard "back" button on the left side - which works, and

2) a "search" button on the right side - which does not show up.

Here's the code:

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

// 1st button - this shows up correctly:
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] init];
backButton.title = @"MAIN";
self.navigationItem.backBarButtonItem = backButton;    

// 2nd. button - this one does not show up:
UIBarButtonItem *searchButton = [[UIBarButtonItem alloc]
                                           initWithBarButtonSystemItem:UIBarButtonSystemItemSearch
                                           target:self
                                           action:@selector(goSearching:)];
self.navigationItem.rightBarButtonItem = searchButton;


itemsByTitleVC *itemsView = [[itemsByTitleVC alloc] initWithNibName:@"itemsByTitleVC" bundle:nil];


[self.navigationController pushViewController:itemsView animated:YES];

}

anyone see why this isn't working? (For what its worth, I'm using Xcode 4.2, with Storyboard...)

set the 2nd Button after you push the ViewController or set the 2nd Button in your specific itemsByTitleVC Controller — CarlJ
– CarlJ, Commented Apr 18, 2012 at 12:00
neither worked. I tried before to add the rightBarButtonItem in the viewDidLoad of the viewController that is being pushed-on -- didn't work... — sirab333
– sirab333, Commented Apr 18, 2012 at 12:13

Prine · Accepted Answer · 2012-04-18 12:02:49Z

5

Your setting the rightBarButtonItem to filterButton, but shouldn't it be searchButton?

// 2nd. button - this one does not show up:
UIBarButtonItem *searchButton = [[UIBarButtonItem alloc]
                                           initWithBarButtonSystemItem:UIBarButtonSystemItemSearch
                                           target:self
                                           action:@selector(goSearching:)];
// Here I think you wanna add the searchButton and not the filterButton..
self.navigationItem.rightBarButtonItem = searchButton;

answered Apr 18, 2012 at 12:02

Prine

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10 Comments

sirab333 Over a year ago

sorry :-) that was indeed a typo on my part - but only in this post - I have it typed right in the code - and it doesn't work...

Prine Over a year ago

But have you tried to create the right bar button in the itemsByTitleVC Controller in the viewDidLoad method? Looks like your setting the rightBarButton but it does get overridden in the new view. The left button is maybe working because its the standard back button which is always displayed..

sirab333 Over a year ago

I did try setting the search button in the viewDidLoad method of "itemsByTitleVC" viewController - it still didn't work. Here's the code I used - its the exact same code - but maybe it needs tweaking since its in the viewDidLoad now?:

UIBarButtonItem *searchButton = [[UIBarButtonItem alloc]                                            initWithBarButtonSystemItem:UIBarButtonSystemItemSearch                                            target:self                                            action:@selector(goSearching:)]; self.navigationItem.rightBarButtonItem = searchButton;

Prine Over a year ago

I just had a look in my own project, where I'm doing the exact same thing. Here is the code I'm using. // Create left Scan button UIBarButtonItem *scanButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(scanButtonClicked:)]; [self.navigationItem setLeftBarButtonItem:scanButton]; and I do it also in the viewDidLoad method from the new pushed ViewController.

sirab333 Over a year ago

I see you are using [self.navigationItem setLeftBarButtonItem:scanButton]; - in other words, you're using a method, while I've been using dot-syntax self.navigationItem.rightBarButtonItem = searchButton; I wonder if that's the issue...lets see...

|

ЯegDwight · Accepted Answer · 2012-09-03 08:45:22Z

0

I ran into this problem today, and eventually I found out that my (and your)

self.navigationItem.rightBarButtonItem

is a readonly property of the UIView class.

Declare your own property that points to the barbuttonItem and you can modify the button.

edited Sep 3, 2012 at 8:45

ЯegDwight

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answered Sep 3, 2012 at 7:58

Gon

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Comments

yingxl1992 · Accepted Answer · 2016-07-20 07:51:17Z

-1

I have happened with this problem, and finally I solved it by using setter method to set rightBarButtonItem. Like [self.navigationItem setRightBarButtonItem:saveButton animated:YES];.

answered Jul 20, 2016 at 7:51

yingxl1992

12 bronze badges

1 Comment

Wayne Over a year ago

using the setter makes not difference here.

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