Calling a phone number with Swift

Question

How can I assign a variable that stores a phone number to a button to call that number?

I am using Swift. Here is my code:

func base() {

    var myBase = sharedDefaults!.objectForKey("base") as? String

    if myBase != nil {
        if myBase == "FRA" {
            titleLabel.text = "FRANKFURT"
            adressLabel.text = "some adress"
            var phone = "+49123456 69 69804616"
            coorPhone.setTitle("Duty Desk : \(phone)", forState: .Normal)
            logoImage.image = UIImage(named: "flaggermany")

        } else if myBase == "LHR" {
            titleLabel.text = "LONDON"
            adressLabel.text = "some adress"
            var phone = "+44123456"

            coorPhone.setTitle("Duty Desk : \(phone)", forState: .Normal)

            logoImage.image = UIImage(named: "flaguk")

        }
    }

    @IBAction func phoneButtonPressed(sender: AnyObject) {
        // let telUrlString = "tel://" + phone
        // UIApplication.sharedApplication().openURL(NSURL(string: "\      (telUrlString)")!)
    }

Answer 1

You can declare your phone variable as a global for your class by declaring it at the below of your class declaration as shown below:

class ViewController: UIViewController {

     let sharedDefaults = NSUserDefaults.standardUserDefaults()
     var phone = ""

}

By declaring this way you can access it anywhere in your class and now you can assign value to it this way in your function:

func base() {

    var myBase = sharedDefaults.objectForKey("base") as? String

    if myBase != nil {
        if myBase == "FRA" {

            titleLabel.text = "FRANKFURT"
            adressLabel.text = "some adress"
            phone = "+49123456 69 69804616"
            coorPhone.setTitle("Duty Desk : \(phone)", forState: .Normal)
            logoImage.image = UIImage(named: "flaggermany")


        }
        else if myBase == "LHR" {
            titleLabel.text = "LONDON"
            adressLabel.text = "some adress"
            phone = "+44123456"
            coorPhone.setTitle("Duty Desk : \(phone)", forState: .Normal)
            logoImage.image = UIImage(named: "flaguk")

        }
    }
}

After that you can use it this way into another function:

@IBAction func phoneButtonPressed(sender: AnyObject) {

    if let url = NSURL(string: "tel://\(phone)") {
        UIApplication.sharedApplication().openURL(url)
    }
}

Hope this will help you.