UINavigationBar not loading correctly - swift

Question

I know there are a lot of questions out there on this topic; however, none of those answers have helped me and I have tried so many ways of going about solving this. My problem is that my bar button will not show up, originaly, but when the viewcontroller is presented later on in the app it will show up then but the navigation title won't show up. I'm not sure why that is, but I believe it has something to do with the SwipeNavigationController framework that I'm using. My goal is to have the button show up as it's supposed to when the user swipes left to get to that view, and also when the view is later called and presented to look the same. The code for adding the navItem is below:
let cameraBarButton = UIBarButtonItem(image: #imageLiteral(resourceName: "cameraIcon"), style: .plain, target: self, action: #selector(goToCamera))
navigationItem.rightBarButtonItem = cameraBarButton
Please look at this other post to get a little better understanding of the framework. As well as here is the code on how I set up the navigation bar:
override func viewDidLoad() {
super.viewDidLoad()
setupView()
let barHeight: CGFloat = UIApplication.shared.statusBarFrame.size.height
let displayWidth: CGFloat = self.view.frame.width
let displayHeight: CGFloat = self.view.frame.height
messagesTableView = UITableView(frame: CGRect(x: 0, y: barHeight, width: displayWidth, height: displayHeight - barHeight))
messagesTableView.register(BlankCell.self, forCellReuseIdentifier: blankCellID)
messagesTableView.dataSource = self
messagesTableView.delegate = self
self.view.addSubview(messagesTableView)
view.backgroundColor = UIColor.white
setupNavButtons()
setupNavBar()
showNoMessagesLabel()
navigationController?.isNavigationBarHidden = false
if #available(iOS 11.0, *) {
navigationController?.navigationBar.prefersLargeTitles = true
self.navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white]
} else {
// Fallback on earlier versions
}
}
override func viewWillAppear(_ animated: Bool) {
if #available(iOS 11.0, *) {
navigationController?.navigationBar.prefersLargeTitles = true
self.navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white]
setupNavBar()
} else {
setupNavBar()
}
}
func setupNavBar() {
UIApplication.shared.statusBarStyle = .lightContent
self.navigationController?.isNavigationBarHidden = false
self.navigationController?.navigationBar.topItem?.title = "Messages"
self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white]
self.navigationController?.navigationBar.barTintColor = UIColor.pinkNeonColor
self.navigationController?.navigationBar.tintColor = UIColor.white
}
func setupNavButtons() {
let cameraButton = UIButton(type: .system)
cameraButton.setImage(#imageLiteral(resourceName: "cameraIcon").withRenderingMode(.alwaysOriginal), for: .normal)
cameraButton.frame = CGRect(x: 0, y: 0, width: 34, height: 34)
navigationItem.leftBarButtonItem = UIBarButtonItem(customView: cameraButton)
}