Transparent Navbar

gistfile1.txt

 call in viewDidLoad
 setUpNavBar(bottomBorderColor: .white, opacity: 0.4, height: 1)
 
 
 func setUpNavBar(bottomBorderColor:UIColor,opacity:Float,height:CGFloat){
        self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
        let navLabel = UILabel(frame: CGRect.zero)
        navLabel.backgroundColor = UIColor.clear
        navLabel.font = UIFont.systemFont(ofSize: 18)
        navLabel.textAlignment = NSTextAlignment.center
        navLabel.textColor = UIColor.white
        navLabel.text = "Tranparent Navbar"
        navLabel.sizeToFit()
        self.navigationItem.titleView = navLabel
        let navBottomBorder = UIView(frame: CGRect(x: 0, y: self.navigationController!.navigationBar.frame.size.height - 1, width: self.view.frame.size.width, height: height))
        navBottomBorder.backgroundColor = bottomBorderColor
        navBottomBorder.layer.opacity = opacity
        navBottomBorder.isOpaque = true
        navigationController?.navigationBar.addSubview(navBottomBorder)
    }