Swift Custom Back Button and Destination - ios

Question

I am currently using SWRevealViewController for a sidebar menu in my app. When I click one of the options, the destination view controller doesn't have a 'back' button because it hasn't come from a proper view controller (i.e. page to go back to).
Therefore I am wanting to manually create a back button on the destination view controller which will go back to the home view controller.
I have looked at the code here: How do I manually set the "Back" destination in iOS apps
But I am struggling to implement this in Swift (one error after another!). Any help? Thanks!
EDIT
I have tried the suggestion below, but the back button just doesn't appear. This may have something to with the fact I have the navbar hidden in other views and do the following on the destination view:
override func viewDidLoad() {
super.viewDidLoad()
navigationController.setNavigationBarHidden(false, animated:true)
var myBackButton:UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
myBackButton.addTarget(self, action: "popToRoot:", forControlEvents: UIControlEvents.TouchUpInside)
var myCustomBackButtonItem:UIBarButtonItem = UIBarButtonItem(customView: myBackButton)
self.navigationItem.leftBarButtonItem = myCustomBackButtonItem
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func popToRoot(sender:UIBarButtonItem){
self.navigationController.popToRootViewControllerAnimated(true)
}
Not sure why the back button won't show up?
Edit
This is the prepareForSegue from my sidebar view controller. If there is a way to check for the segue identifier 'test' then I can set the back button from here?
- (void) prepareForSegue: (UIStoryboardSegue *) segue sender: (id) sender
{
// Set the title of navigation bar by using the menu items
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
UINavigationController *destViewController = (UINavigationController*)segue.destinationViewController;
destViewController.title = [[_menuItems objectAtIndex:indexPath.row] capitalizedString];
if ( [segue isKindOfClass: [SWRevealViewControllerSegue class]] ) {
SWRevealViewControllerSegue *swSegue = (SWRevealViewControllerSegue*) segue;
swSegue.performBlock = ^(SWRevealViewControllerSegue* rvc_segue, UIViewController* svc, UIViewController* dvc) {
UINavigationController* navController = (UINavigationController*)self.revealViewController.frontViewController;
[navController setViewControllers: #[dvc] animated: NO ];
[self.revealViewController setFrontViewPosition: FrontViewPositionLeft animated: YES];
};
}
}

Answer 1

You can write that in swift like this
Write this to add button on navigationController
navigationController.setNavigationBarHidden(false, animated:true)
var myBackButton:UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
myBackButton.addTarget(self, action: "popToRoot:", forControlEvents: UIControlEvents.TouchUpInside)
myBackButton.setTitle("YOUR TITLE", forState: UIControlState.Normal)
myBackButton.setTitleColor(UIColor.blueColor(), forState: UIControlState.Normal)
myBackButton.sizeToFit()
var myCustomBackButtonItem:UIBarButtonItem = UIBarButtonItem(customView: myBackButton)
self.navigationItem.leftBarButtonItem = myCustomBackButtonItem
this will pops to rootViewController
func popToRoot(sender:UIBarButtonItem){
self.navigationController.popToRootViewControllerAnimated(true)
}

Answer 2

Swift 3.0 Solution:
self.navigationController?.setNavigationBarHidden(false, animated:false)
//Create back button of type custom
let myBackButton:UIButton = UIButton.init(type: .custom)
myBackButton.addTarget(self, action: #selector(ViewController.popToRoot(sender:)), for: .touchUpInside)
myBackButton.setTitle("Back".localized(), for: .normal)
myBackButton.setTitleColor(.blue, for: .normal)
myBackButton.sizeToFit()
//Add back button to navigationBar as left Button
let myCustomBackButtonItem:UIBarButtonItem = UIBarButtonItem(customView: myBackButton)
self.navigationItem.leftBarButtonItem = myCustomBackButtonItem
func popToRoot(sender:UIBarButtonItem){
_ = self.navigationController?.popToRootViewController(animated: true)
}

Answer 3

In Swift 2.1
I am customizing Navigation Bar Items this way
I can change Navigation bar background image, title text, text color
I can show/hide back button
I can Change Title/ Icon or custom action method
In AppDelegate I have
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool
{
//Cutomize navigation bar
let navBgImage:UIImage = UIImage(named: "dummy_navigation_bg_image")!
UINavigationBar.appearance().setBackgroundImage(navBgImage, forBarMetrics: .Default)
UINavigationBar.appearance().tintColor = UIColor.whiteColor()
UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName : UIColor.whiteColor()];
return true
}
In ViewController I update Navigation Items in viewWillAppear method this way
override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated)
setupNavigationBar()
}
// MARK: - NavigationBar methods
func setupNavigationBar ()
{
//current tab screen title
tabBarController?.title = "Manage"
//Hide back button or left bar button
tabBarController?.navigationItem.leftBarButtonItem = UIBarButtonItem(title: " ", style: .Plain, target: nil, action: nil)
//custom right bar button
var image = UIImage(named: "dummy_settings_icon")
image = image?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
tabBarController?.navigationItem.rightBarButtonItem = UIBarButtonItem(image: image, style: UIBarButtonItemStyle.Plain, target: self, action: "settingButtonAction")
}
func settingButtonAction()
{
print("Setting Button tapped")
performSegueWithIdentifier("loadAccountSettingsSegue", sender: nil)
}

Answer 4

Here's an updated version for Swift 2/2.1:
self.navigationController? .setNavigationBarHidden(false, animated:true)
let backButton = UIButton(type: UIButtonType.Custom)
backButton.addTarget(self, action: "methodCall:", forControlEvents: UIControlEvents.TouchUpInside)
backButton.setTitle("TITLE", forState: UIControlState.Normal)
backButton.sizeToFit()
let backButtonItem = UIBarButtonItem(customView: backButton)
self.navigationItem.leftBarButtonItem = backButtonItem

Answer 5

Swfit 5 / XCode 11.4
override func viewDidLoad() {
super.viewDidLoad()
navigationController!.setNavigationBarHidden(false, animated: true)
let myBackButton:UIButton = UIButton(type: UIButton.ButtonType.custom) as UIButton
myBackButton.addTarget(self, action: #selector(popToRoot), for: UIControl.Event.touchUpInside)
myBackButton.setTitle("YOUR TITLE", for: UIControl.State.normal)
myBackButton.setTitleColor(UIColor.white, for: UIControl.State.normal)
myBackButton.sizeToFit()
let myCustomBackButtonItem:UIBarButtonItem = UIBarButtonItem(customView: myBackButton)
self.navigationItem.leftBarButtonItem = myCustomBackButtonItem
}
Also, popToRoot you should mark as #objc
#objc func popToRoot() {
//enter action here
}