CODEWITHSUNDEEP
iosswift
MortalMan
MortalMan

Reputation: 2612

Add "Edit" button to UIViewController

I am familiar with this code: self.navigationItem.leftBarButtonItem = self.editButtonItem.

See this code: 

class ThirdViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

@IBOutlet var tblTasks: UITableView! // declaring this allows you to reload the tableView to update your items

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    self.navigationItem.rightBarButtonItem = self.editButtonItem()
}

I have the code that allows for the edit button to be present, yet no edit button is to be seen in my app nor the storyboard.

I am a Swift beginner, if someone could point me in the right direction that would be awesome.

Upvotes: 3

Views: 2205

Answers (3)

Alexey Saechnikov
Alexey Saechnikov

Reputation: 481

If you add it into navigationItem you should embed that view controller into UINavigationController to see that button.
You will not see that button in Storyboard because you set it in code. In Storyboard you setup only initial state of the controller.

How to setup editing mode in UIViewController subclass:

There is editButtonItem variable in UIViewController. If you add it on screen, setEditing(_:,animated:) will be triggered when user tap that button.
Also it will change button text between Edit and Done according to ViewController's isEditing state.
You can get current state from self.isEditing
Do not forget to call super.setEditing(_:animated:), or it will not change state of the button and view controller.

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationItem.rightBarButtonItem = self.editButtonItem
}

override func setEditing(_ editing: Bool, animated: Bool) {
   super.setEditing(editing, animated: animated)
   // custom code to handle edit mode
}

editButtonItem (iOS 10.0+)
isEditing (iOS 2.0+)
setEditing(_:animated:) (iOS 2.0+)

Upvotes: 2

Dejan Skledar
Dejan Skledar

Reputation: 11435

You can create your own edit button, like:

self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Edit", style: .Plain, target: self, action: Selector("editTableView"))

And then:

func editTableView()
{
    if self.navigationItem.rightBarButtonItem.title == "Edit"
    {
        self.navigationItem.rightBarButtonItem.title = "Done"
        //edit your tableView Here!
    }
    else
    {
        self.navigationItem.rightBarButtonItem.title = "Edit"
        //when youre finishing editing
    }


}

Upvotes: 0

bgilham
bgilham

Reputation: 5939

The stock "Edit" button is only available on UITableViewController. For other view controller types you'll have to create a button yourself.

Upvotes: 5

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