iOS Objective-C UIBarButtonItem Action Not Called - ios

Question

I have a property:
#property (strong, nonatomic) IBOutlet UIBarButtonItem *backButton;
It gets set like this:
UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemPlay target:self action:#selector(goBack:)];
backItem.imageInsets = UIEdgeInsetsZero;
UIToolbar *backToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 44, 44)];
backToolbar.userInteractionEnabled = YES;
[backToolbar setTransform:CGAffineTransformMakeScale(-1, 1)];
backToolbar.items = [NSArray arrayWithObjects:backItem, nil];
backToolbar.backgroundColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:1.0];
backToolbar.clipsToBounds = YES;
self.backButton = [[UIBarButtonItem alloc] initWithCustomView:backToolbar];
self.backButton.enabled = YES;
self.backButton.imageInsets = UIEdgeInsetsZero;
Which I would have thought would set the selector to this:
- (IBAction)goBack:(id)sender {
NSLog(#"goBack pushed");
[self.iframeView goBack];
}
But goBack pushed is never logged out when I click the button, though the iframeView (just a UIWebView) does go to the previous page.
I've also tried setting the action like this (set right below the above code):
[self.backButton setTarget:self];
[self.backButton setAction:#selector(goBack:)];
Any ideas how I can adjust the code such that the selector is called when I push the back button?

Answer 1

Did you create your backButton from storyboard (because you declare it as an IBOutlet)?
If you already create it from storyboard then you can simply Ctrl-Left Click to drag the button into your implementation file .m where the - (IBAction)goBack:(id)sender is to create the selector.
UPDATE:
I just noticed you said this
But goBack pushed is never logged out when I click the button, though
the iframeView (just a UIWebView) does go to the previous page.
UIWebView has the goBack function already. So by setting
[self.backButton setAction:#selector(goBack:)];
When the button is pressed it will called the goBack function of the UIWebView.
All you have to is give it a different name:
[self.backButton setAction:#selector(backButtonPressed:)];
- (IBAction)backButtonPressed:(id)sender{
NSLog(#"goBack pushed");
[self.iframeView goBack];
}

Answer 2

I tried your code and I found a line of code is missing which is why the selector goBack: is not triggered. If I am not wrong the button "Play" is not visible when you compile
self.navigationItem.rightBarButtonItem = self.backButton;
As I observed you have created the bar button, toolbar programmatically, also you don't need the #property (strong, nonatomic) IBOutlet UIBarButtonItem *backButton; if your not using it else where in the code or you have to omit the IBOutlet.
Hope these helps.