How to customize UINavigationBar for the entire app? - ios

Question

This is a bit different question than the previously asked. So be nice.
The entire app has a navigation bar with different colors.
The entire app has few options in its navigation bar. They all are same.
What am I expecting?
I have created this extension for UINavigationController and able to change the navigation bar's background color as per the view controller I will be.
extension UINavigationController {
func updateNavigationBar(withViewControllerID identifier: String?) {
setupNavigationBarButtons()
if identifier == kFirstVCIdentifier {
self.navigationBar.tintColor = .white
self.navigationBar.barTintColor = .red
} else if identifier == kSecondVCIdentifier {
self.navigationBar.tintColor = .white
self.navigationBar.barTintColor = .green
} else if identifier == kThirdVCIdentifier {
self.navigationBar.tintColor = .white
self.navigationBar.barTintColor = .blue
}
self.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white]
self.navigationBar.isTranslucent = false
self.navigationBar.clipsToBounds = false
self.navigationBar.shadowImage = UIImage.init()
self.view.backgroundColor = .clear
}
internal func setupNavigationBarButtons() {
let barButtonItemSettings = UIBarButtonItem.init(title: "Settings", style: .plain, target: self, action: #selector(actionSettings))
let barButtonItemSpace = UIBarButtonItem.init(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
let barButtonItemLogOut = UIBarButtonItem.init(title: "LogOut", style: .plain, target: self, action: #selector(actionLogOut))
let buttons = [barButtonItemSettings, barButtonItemSpace, barButtonItemLogOut]
self.navigationItem.rightBarButtonItems = buttons
}
#objc internal func actionSettings() {
print("Settings")
}
#objc internal func actionLogOut() {
print("LogOut")
}
}
then, I am trying to add UIBarButton within that extension but they are not showing up. So I need to fix it. And if it will be visible, how do I get its actions call so that I can handle UIBarButton's touch event in the entire app. Properly? No patch, please.
I am using it like this:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.updateNavigationBar(withViewControllerID: self.restorationIdentifier?)
}

Answer 1

Try this and Make extension for UINavigationItem.
extension UINaviationItem {
func setupNavigationBarButtons()
{
let barButtonItemSettings = UIBarButtonItem.init(title: "Settings", style: .plain, target: self, action: #selector(actionSettings))
let barButtonItemSpace = UIBarButtonItem.init(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
let barButtonItemLogOut = UIBarButtonItem.init(title: "LogOut", style: .plain, target: self, action: #selector(actionLogOut))
let buttons = [barButtonItemSettings, barButtonItemSpace, barButtonItemLogOut]
self.rightBarButtonItems = buttons
}
#objc func actionSettings() {
print("Settings")
if let current = UIApplication.shared.delegate?.window
{
var viewcontroller = current!.rootViewController
if(viewcontroller is UINavigationController){
viewcontroller = (viewcontroller as! UINavigationController).visibleViewController
print( "currentviewcontroller is %#/",viewcontroller )
}
}
}
#objc func actionLogOut() {
print("LogOut")
}
}
self.navigationController?.updateNavigationBar(withViewControllerID: "second")
self.navigationItem.setupNavigationBarButtons()