SwiftUI - navigationBarBackButtonHidden - swipe back gesture?

Question

if I set a custom Back Button (which everyone wants, hiding the ugly text ;-) ) and using .navigationBarBackButtonHidden, the standard Swipe Back gesture on the navigation controller does not work. Is there a way to get this back and having a custom back button?

For Example:

NavigationView {
    NavigationLink(destination: DummyViewer())
     {
       Text("Go to next view"
    } 
 }

struct DummyViewer: View {
    @Environment(\.presentationMode) var presentationMode: Binding<PresentationMode>
    var body: some View {
        Text("Hello, World!").navigationBarBackButtonHidden(true)
            .navigationBarItems(leading:
                Button(action: { self.presentationMode.wrappedValue.dismiss()}) {
                    Text("Custom go back")
                }
        )
    }
}

If I do so, I cannot swipe back to the previous view, seems the gesture is then disabled... How to get it back?

BR Steffen

Does this answer your question? [Hide navigation bar without losing swipe back gesture in SwiftUI](https://stackoverflow.com/questions/59921239/hide-navigation-bar-without-losing-swipe-back-gesture-in-swiftui) — iSpain17, Feb 17 '20 at 19:52

score 57 · Answer 1 · answered Feb 05 '20 at 01:31

57

Nothing I found about creating a custom NavigationView worked but I found that by extending UINavigationController I was able to have a custom back button and the swipe back gesture.

extension UINavigationController: UIGestureRecognizerDelegate {
    override open func viewDidLoad() {
        super.viewDidLoad()
        interactivePopGestureRecognizer?.delegate = self
    }

    public func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        return viewControllers.count > 1
    }
}

answered Feb 05 '20 at 01:31

Nick Bellucci

1,496
10
8

This still works as of now (Xcode 11.4.1 on iOS 13.2) – pizzae May 15 '20 at 13:35
2

Still works on iOS 14.2. What a powerful spell! – Shengchalover Apr 05 '21 at 16:13
Still works in 14.5, thx! I wonder what the implications of this are because this is being applied to all navigation controls globally – TruMan1 May 02 '21 at 16:07
Works in iOS 15 Developer Beta 1 – liudasbar Jun 11 '21 at 23:41
1

This is amazing – Kyle Beard Oct 07 '21 at 17:06
But how to do some clean up after user swipes back? – Tony Chen Nov 03 '21 at 14:07
This still works in iOS 15.4 and Xcode 13.3.1 – Mr Developer Apr 30 '22 at 17:25

score 0 · Answer 2 · answered Jan 28 '20 at 08:41

0

If it's still actual, here I answered, how to set custom back button and save swipe back gesture.

answered Jan 28 '20 at 08:41

Hrabovskyi Oleksandr

2,526
2
12
32

score 0 · Answer 3 · answered Apr 20 '22 at 07:36

I would like to integrate the answer given by Nick Bellucci to make the code also works in other circumstances, e.g. when the child view of the NavigationView is a ScrollView, or a View that is listening for Drag gestures.

extension UINavigationController: UIGestureRecognizerDelegate {
    override open func viewDidLoad() {
        super.viewDidLoad()
        interactivePopGestureRecognizer?.delegate = self
    }

    public func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        return viewControllers.count > 1
    } 

    // To make it works also with ScrollView
    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        true
    }
}

score -1 · Answer 4 · answered Dec 08 '19 at 11:47

-1

You can set the title to an empty string. So back bar button title will be empty:

struct ContentView: View {

    var body: some View {

        NavigationView {

            NavigationLink(destination: Text("Here you are")) {

                Text("Next").navigationBarTitle("")
            }
        }
    }
}

_{You can set the title onAppear or onDisappear if you need to.}

answered Dec 08 '19 at 11:47

Mojtaba Hosseini

71,072
19
226
225

Hi, I added some more information. It is about the Back Button and the Swipe gesture which it causes - or not. – sTOOs Dec 08 '19 at 13:51

SwiftUI - navigationBarBackButtonHidden - swipe back gesture?

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