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iOS

Posted by jordanviehmeyer
jordanviehmeyer
422 Points

How do I convert a string to an integer in Swift 2.0?

My code is as follows, Im trying to build a calculator application

@IBAction func addBtn(sender: AnyObject) {
        var num1 = textBox.text
        print("The First Number Is\(num1)")
        textBox.text = ""
        var num2 = textBox.text
        print("The Second Number Is\(num2)")
        textBox.text = ""
        var ans = num1 + num2 //These need to be integers so I can add them.
        println("The Answer Is\(ans)")

    }

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hello :

What you want to do is cast these into the type Int.

Int(textBox.text)

Now they will return as an optional, so make sure you do the right procedure to unwrap them.

@IBAction func addBtn(sender: AnyObject) {
        var num1 = Int(textBox.text)
        print("The First Number Is\(num1)")
        textBox.text = ""
        var num2 = Int(textBox.text)
        print("The Second Number Is\(num2)")
        textBox.text = ""
        var ans = num1 + num2 //These need to be integers so I can add them.
        println("The Answer Is\(ans)")

    }