Custom back button in one to one or group chat

gistfile1.txt

 
 1. Find the method launchChatWith(contactId in ALChatmanager.swift file and replace it with below code for adding custom back button
 
 
 
 func launchChatWith(contactId: String, from viewController: UIViewController, configuration: ALKConfiguration, prefilledMessage: String? = nil) {
        let alContactDbService = ALContactDBService()
        var title = ""
        if let alContact = alContactDbService.loadContact(byKey: "userId", value: contactId), let name = alContact.getDisplayName() {
            title = name
        }
        title = title.isEmpty ? "No name" : title
        let convViewModel = ALKConversationViewModel(contactId: contactId, channelKey: nil, localizedStringFileName: configuration.localizedStringFileName, prefilledMessage: prefilledMessage)
        let conversationViewController = ALKConversationViewController(configuration: configuration)
        conversationViewController.viewModel = convViewModel

        var backImage = UIImage(named: "icon_back", in: Bundle(for: ALKConversationListViewController.self), compatibleWith: nil)
        backImage = backImage?.imageFlippedForRightToLeftLayoutDirection()
        let backButton = UIBarButtonItem(
            image: backImage,
            style: .plain,
            target: self,
            action: #selector(self.customBackAction)
        )

        conversationViewController.navigationItem.leftBarButtonItems = [backButton]
        launch(viewController: conversationViewController, from: viewController)
    }


    @objc func customBackAction() {
        let pushassets = ALPushAssist()
        let topVC = pushassets.topViewController

        guard let nav = topVC?.navigationController else { return }
        let poppedVC = nav.popViewController(animated: true)
        if poppedVC == nil {
            topVC?.dismiss(animated: true, completion: nil)
        }
    }