Enable Swipe To Back in SwiftUI by using an extension of the UINavigationController

UINavigationController+SwiftUI.swift

//
//  UINavigationController+TLDL.swift
//  TLDL
//
//  Created by Cristian Holdunu on 14.10.2024.
//
import UIKit

extension UINavigationController: @retroactive UIGestureRecognizerDelegate {
    override open func viewDidLoad() {
        super.viewDidLoad()
        interactivePopGestureRecognizer?.delegate = self
        interactivePopGestureRecognizer?.requiresExclusiveTouchType = true
        interactivePopGestureRecognizer?.cancelsTouchesInView = true
    }

    public func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        return viewControllers.count > 1
    }
    
    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        // Check if the other gesture recognizer is from a UIScrollView (like a horizontal pager)
        if let scrollView = otherGestureRecognizer.view as? UIScrollView {
            let touchLocation = gestureRecognizer.location(in: view)
            
            // Check if the touch started within the first 50 points from the left edge
            if touchLocation.x <= 50 {
                // If the swipe started near the left edge, disable the scroll view’s pan gesture
                scrollView.panGestureRecognizer.isEnabled = false
                return true
            } else {
                // If the swipe didn't start near the edge, re-enable the scroll view’s pan gesture
                scrollView.panGestureRecognizer.isEnabled = true
                return false
            }
        }
        
        return false
    }

    public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
        // Ensure the swipe-back gesture only triggers if the user starts the swipe within 50 points from the edge of the screen
        let touchLocation = touch.location(in: view)
        return touchLocation.x <= 50 // Allow the gesture only if the touch started within 50 points of the left edge
    }
}