First leftBarButtonItem is hiding - ios

Question

I used 2 bar button items. One is for back button and second is for the title. It is working fine. But when the title string is large, the title shifts to left and back button does not appear, but it is working.
I am also using a rightBarButtonItem, that is attached with a badge button. But that is not affecting this as I have tried the same code after removing that button. This is my code -
let backBtnImg: UIImage = UIImage(named: "Back Image")!
let Back: UIBarButtonItem = UIBarButtonItem(image: backBtnImg, style: .plain, target: self, action: #selector(backButtonAction))
let titleStr = ("titleString")
let titleItem: UIBarButtonItem = UIBarButtonItem(title: titleStr, style: .plain, target: nil, action: nil)
self.navigationItem.leftBarButtonItems = [Back, titleItem]
I have attached both the images.

Answer 1

Please try this code if you want to set the title in left side. It may helps to you.
In viewDidLoad method
let navView = UIView(frame: CGRect(x: 0, y: 0, width: (self.navigationController?.navigationBar.frame.size.width)! - 50, height: 40))
lblTitle = UILabel(frame: CGRect(x: 0, y: 0, width: navView.frame.size.width - 40, height: 40))
lblTitle?.text = strTitle
lblTitle?.backgroundColor = UIColor.clear
lblTitle?.textColor = UIColor.white
lblTitle?.textAlignment = .left
navView.addSubview(lblTitle!)
self.navigationItem.titleView = navView

Answer 2

Use this One It help you
-> take only one left button
-> For Title use: self.navigationItem.title = "Navigation Title"
let backBtnImg: UIImage = UIImage(named: "back")!
let Back: UIBarButtonItem = UIBarButtonItem(image: backBtnImg, style: .plain, target: self, action: #selector(backButtonAction))
self.navigationItem.title = "Navigation Title"
self.navigationItem.leftBarButtonItems = [Back]

Answer 3

func setupNevigationBar(){
let btnBack = UIButton(type: .custom)
btnBack.setImage(#imageLiteral(resourceName: "back"), for: .normal)
btnBack.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
btnBack.addTarget(self, action: #selector(btnBackPressed), for: .touchUpInside)
let itemBack = UIBarButtonItem(customView: btnBack)
let titleStr = ("Regular Title")
let titleItem: UIBarButtonItem = UIBarButtonItem(title: titleStr, style: .plain, target: nil, action: nil)
self.navigationItem.leftBarButtonItems = [itemBack, titleItem]
self.navigationItem.setLeftBarButton(itemBack, animated: true)
}