how to disable a navigation bar button item in iOS

Question

I have created a navigation controller. In the second view (which is pushed), I have some webservice call and placing a overlay view and setting

self.view.use

Answer 1

You can do the following if you are running on Swift

self.navigationItem.rightBarButtonItem?.enabled = true

This snippet will disable the button.

Answer 2

Swift 5 & iOS 13 :

To remove all left buttons or just a specified one just remove from leftBarButtonItems Array.

        self.navigationItem.leftBarButtonItems = []

Answer 3

- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.leftBarButtonItem=nil;
self.navigationItem.hidesBackButton=YES;
}

Answer 4

I solved this by just adding a property to my viewcontroller:

@property (nonatomic, strong) IBOutlet UIBarButtonItem * RightButton;

I then connected it to the button on the storyboard. You can then at will set its properties like:

self.RightButton.enabled=true;

Answer 5

Try this code:

UIApplication.sharedApplication().beginIgnoringInteractionEvents()

This will stop user to interaction with app and after service call, write this code again:

UIApplication.sharedApplication().endIgnoringInteractionEvents()

Sure this will help.

Answer 6

Latest Swift: To hide the back button, you MUST use:

self.navigationItem.setHidesBackButton(true, animated: false)

Note: This can trigger a bug in the navigation bar that can cause an artifact to appear in place of a hidden back button when transitioning to a view that doesn't have a back button (or has a leftButton in its place). The artifact that appears is either ellipses "..." or the title of the previous viewController on the stack. I believe this bug to be related to the bug documented in apple's own sample code project "CustomizingUINavigationBar", CustomBackButtonViewController.m