CODEWITHSUNDEEP
iosswiftuinavigationcontrolleruinavigationbaruinavigationitem
tara tandel
tara tandel

Reputation: 550

add bar button item programmatically at ViewControllers after rootView Swift 3.0

I have a View hierarchy

there is just one navigation controller and its rootViewController.

I want to add a left bar button item at the view which is circled.

the View I want to add barButton:

enter image description here

I tried 

self.navigationController?.navigationItem.leftBarButtonItem = editButtonItem

in viewDidLoad() and viewWillAppear() but none of them worked out. I also tried adding UINavigationItem in storyBoard and then adding barButtonItem. this didn't work too.

EDIT

I tried the answers below and that's what I get in the output.

my output after trying answers:

enter image description here

any help would be appreciated.

Upvotes: 3

Views: 9625

Answers (2)

Sudipto Roy
Sudipto Roy

Reputation: 6795

a) Make a new BarButtonItem with System Item , Target View Controller Instance and Action Method Name.

b) Assign it to leftBarButtonItem

c) Good to do this in func viewWillAppear()

And thats it !

let editButtonItem = UIBarButtonItem(barButtonSystemItem: .edit, target: self, action: #selector(actionEdit)) // actionEdit is your Action Method for this button
navigationItem.leftBarButtonItem = editButtonItem

Upvotes: 0

Devang Tandel
Devang Tandel

Reputation: 3008

You can add Bar Button like

let btnleft : UIButton = UIButton(frame: CGRect(x:0, y:0, width:35, height:35))
btnleft.setTitleColor(UIColor.white, for: .normal)
btnleft.contentMode = .left

btnleft.setImage(UIImage(named :"yourimage.png"), for: .normal)
            btnleft.addTarget(self, action: #selector(YOUR_ACTION), for: .touchDown)
let backBarButon: UIBarButtonItem = UIBarButtonItem(customView: btnleft)

self.navigationItem.setLeftBarButtonItems([backBarButon], animated: false)

Upvotes: 1

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