UIControlState in Swift

Question

Here is my code:

let font = UIFont(name: "AvenirNext-Regular", size: 16.0)
let attributes: NSDictionary? = [ NSFontAttributeName : font! ]
self.segmentedControl.setTitleTextAttributes(attributes, forState:.Normal)

I have an error "Could not find member 'Normal' in the last line. What's wrong?

Answer 1

You need to cast your attributes to [NSObject : AnyObject] and your code will be :

segmentedControl.setTitleTextAttributes(attributes as [NSObject : AnyObject]?, forState: .Normal)

This is default syntax from Apple Docs:

func setTitleTextAttributes(_ attributes: [NSObject : AnyObject]?, forState state: UIControlState)

Or you can cast attributes to [NSObject : AnyObject]? when you create it and code code will be:

let font = UIFont(name: "AvenirNext-Regular", size: 16.0)
let attributes: [NSObject : AnyObject]? = [ NSFontAttributeName : font! ]
self.segmentedControl.setTitleTextAttributes(attributes, forState: UIControlState.Normal)

Answer 2

It's should work your code. You just restart your xcode.

Try blow Code:

import UIKit

class ViewController: UIViewController {

    @IBOutlet var segment: UISegmentedControl!

    override func viewDidLoad() {
        super.viewDidLoad()


        let font = UIFont(name: "AvenirNext-Regular", size: 26.0)
        let attributes: NSDictionary? = [ NSFontAttributeName : font! ]
       segment.setTitleTextAttributes(attributes! as [NSObject : AnyObject], forState:.Normal)

        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

Answer 3

Change the following line of your code:

self.segmentedControl.setTitleTextAttributes(attributes, forState:.Normal)

to this:

self.segmentedControl.setTitleTextAttributes(attributes, forState: UIControlState.normal)

or you can also use the following:

self.segmentedControl.setTitleTextAttributes(attributes as? [AnyHashable : Any], forState: UIControlState.normal)