How do I hide/show the right button in the Navigation Bar

Question

I need to hide the right button in the Navigation Bar, then unhide it after the user selects some options.

Unfortunately, the following doesn\'t work:

Answer 1

Show:

[self.navigationItem.rightBarButtonItem.customView setHidden:NO];

Hide:

[self.navigationItem.rightBarButtonItem.customView setHidden:YES];

Answer 2

Show:

[self.navigationItem.rightBarButtonItem.customView setAlpha:1.0];

Hide:

[self.navigationItem.rightBarButtonItem.customView setAlpha:0.0];

You can even animate its showing/hiding

[UIView animateWithDuration:0.2 animations:^{
        [self.navigationItem.rightBarButtonItem.customView setAlpha:1.0];

    }];

Answer 3

Swift 2:

Trick!

Hide:

if let btn = self.tabBarController!.navigationItem.rightBarButtonItem {
        btn.enabled = false
        btn.title = ""
}

Show:

if let btn = self.tabBarController!.navigationItem.rightBarButtonItem {
        btn.enabled = true
        btn.title = "ButtonName"
}

Answer 4

For swift 5 to hide rightBarButtonItem

self.navigationItem.rightBarButtonItem?.customView?.isHidden = true

Answer 5

Show:

//set navigationItem tint color white
self.navigationItem.rightBarButtonItem.tintColor = [UIColor whiteColor];

Hide:

//set navigationItem tint clear white
self.navigationItem.rightBarButtonItem.tintColor = [UIColor clearColor];

Answer 6

1. Assume you can reference the specific bar button as variable xxxButton

(please open Assistant Editor, Control+Drag xxx button to YourViewController class as outlet "xxxButton").

or you can use something like let xxxButton = navigationBar.buttons[1]

2. Hide xxxButton.customView = UIView() or navigationItem.rightBarButtonItems?.remove(at: (navigationItem.rightBarButtonItems?.index(of:xxxButton)!)!)

3. Show xxxButton.customView = nil or navigationItem.rightBarButtonItems?.insert(newElement: xxxButton, at:SOME_INDEX)

Hope helpful.