Navigation Bar Back Button not working

Question

I am trying add a custom back button so that I can perform some tasks before popping the controller. But no matter how hard I tried this function bind with back button doesn't work. I am adding some code to understand

-(void)customizeNavigationBar
{
    self.navigationController.navigationBarHidden = NO;
    self.navigationItem.title = @"Video Call";

   UIBarButtonItem *backButton = [[UIBarButtonItem alloc] 
              initWithTitle:@" " style:UIBarButtonItemStylePlain 
              target:self action:@selector(didBackBtnTap)];
   [self.navigationItem setBackBarButtonItem:backButton];
}

and this is the function, which is not calling at all,

-(void)didBackBtnTap
{
    [self popToProfileScreen];
}

Please suggest any solution, Thanks in advance.

Let use `setLeftBarButtonItem` instead of `setBackBarButtonItem`. — trungduc, Jul 07 '18 at 13:13
I want it to look like back button but override it with my custom function .. I don't want to add any icon with it — Najam, Jul 07 '18 at 13:15
It is working in my other controllers very well but not here — Najam, Jul 07 '18 at 13:16
In case you want to keep default back button, it's another question https://stackoverflow.com/questions/18824186/trying-to-handle-back-navigation-button-action-in-ios — trungduc, Jul 07 '18 at 13:17

score 1 · Answer 1 · answered Jul 07 '18 at 13:16

1

Use leftbarbutton item instead of setBackBarButtonItem

self.navigationItem.leftBarButtonItem = backButton;

answered Jul 07 '18 at 13:16

Hitesh Agarwal

1,943
17
21

I want it to look like back button but override it with my custom function .. I don't want to add any icon with it – Najam Jul 07 '18 at 13:17

score 1 · Answer 2 · answered Jul 07 '18 at 16:59

1

When you use the setLeftBarButtonItem or setBackBarButtonItem, it will take effect on the viewController you’re pushing to but not the current one. That’s why you need to directly set the current leftBarButtonItem

answered Jul 07 '18 at 16:59

congsun

144
5

score 0 · Answer 3 · answered Jul 07 '18 at 13:22

0

Another option is to write your custom code in viewWillDisappear.

answered Jul 07 '18 at 13:22

Aamir

83
1
3

No I cannot use in this method. – Najam Jul 07 '18 at 13:27
This should be a comment, not an answer. – rmaddy Jul 07 '18 at 15:18

score 0 · Answer 4 · answered Jul 09 '18 at 08:47

Use this code

UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
backButton.frame = CGRectMake(0, 0, 15, 15);
[backButton setImage:[UIImage imageNamed:@"backButtonImage"] forState:UIControlStateNormal];
[backButton setTitle:@"Back" forState:UIControlStateNormal];
backButton.imageEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 0);
[backButton addTarget:self action:@selector(backButtonPressed) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];

Add an image(15*15, @1x @2x @3x) like back button of NavigationBar in xcasstes backButtonImage

- (void)backButtonPressed {}

Navigation Bar Back Button not working

4 Answers4