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iOS

Posted by kirkbyo
kirkbyo
15,791 Points

Accessing Variables Outside a IBAction | Swift

I am working on a little side project for fun and I am trying to access "inputAC" and "inputB" outside the IBAction to gain access to the numbers from the text fields.

@IBOutlet weak var display: UILabel!
@IBOutlet weak var textFieldAC: UITextField!
@IBOutlet weak var textFieldB: UITextField!


    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }


    @IBAction func checkNum() {
        var inputAC: Int
        var inputB: Int
        inputAC = textFieldAC.text.toInt()!
        inputB = textFieldB.text.toInt()!
    }
   // Trying to access right here
    var ac: Int = inputAC
    var b: Int = inputB

    func isCommon (#numOne: Int, numTwo: Int) -> Int? {
        if numOne * numTwo == ac && numOne + numTwo == b {
            return true
        } else {
            return nil
        }
    }

    func checkNumbers() {
        let range = 0...b
        var numTwo = 0
        for numOne in range {
            numTwo = b-numOne
            if let result = isCommon(numOne: numOne, numTwo: numTwo) {
                println("Success | \(numOne) and \(numTwo) Work")
                display.text = "Success | \(numOne) and \(numTwo) Work"
                break
            } else {
                println("Failure - \(numOne) and \(numTwo) Does NOT Work")
            }
        }
    }

How would I go about doing this?

Ozzie

kirkbyo
kirkbyo
15,791 Points

Ideas Pasan Premaratne?

1 Answer

Andres Oliva
Andres Oliva
7,810 Points

You cannot access variables outside methods.

First, if you need to use those variables somewhere else besides your IBAction, it would make sense then to declare those variables as properties.

Just declare them below the IBOutlets (but don't assign them a value!)

Just do it like this:

var ac: Int
var b: Int

You can then remove the declaration from the IBAction method.