How to hide the “back” button in UINavigationController?

Question

Do you know how to hide the \'back\' button in a UINavigationController? Also, how to show it back, but I guess that\'s very similar to hiding it...

Just like the ma

Answer 1

This hides the back button and replaces it with an add button in Swift:

override func setEditing(_ editing: Bool, animated: Bool) {
    super.setEditing(editing, animated: animated)

    // This hides the back button while in editing mode, which makes room for an add item button
    self.navigationItem.setHidesBackButton(editing, animated: animated)

    if editing {
        // This adds the add item button
        let addButton = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(addTapped))
        // Use the animated setter for the left button so that add button fades in while the back button fades out
        self.navigationItem.setLeftBarButton(addButton, animated: animated)
        self.enableBackGesture(enabled: false)
    } else {
        // This removes the add item button
        self.navigationItem.setLeftBarButton(nil, animated: animated)
        self.enableBackGesture(enabled: true)
    }
}

func enableBackGesture(enabled: Bool) {
    // In addition to removing the back button and adding the add item button while in edit mode, the user can still exit to the previous screen with a left-to-right swipe gesture in iOS 7 and later. This code disables this action while in edit mode.
    if let navigationController = self.navigationController {
        if let interactivePopGestureRecognizer = navigationController.interactivePopGestureRecognizer {
            interactivePopGestureRecognizer.isEnabled = enabled
        }
    }
}