CODEWITHSUNDEEP
iosswift
Denkir
Denkir

Reputation: 1

Swift, Calculating and inserting data into a text field

I'm trying to make an app that prorates rent for class, but whenever I plugin all of the data and press the calculate button, it just show the word "inf" in the text box.

the code is as follows:

   class ViewController: UIViewController {




@IBAction func tapIt(sender: UITapGestureRecognizer) {
    monthlyRent.resignFirstResponder()
    moveInMonth.resignFirstResponder()
    moveInDay.resignFirstResponder()
    moveInYear.resignFirstResponder()
    billOn.resignFirstResponder()
}

override func viewDidLoad() {
    super.viewDidLoad()

}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()


}

var daysInMonth : Int = Int()
var temp : Int = Int()
var daysLivingThere : Int = Int()
var rentPerDay : Double = Double()
var billingDays2 : Int = Int()
var proratedRent : Double = Double()
var addIn = 1
var passingData : String = String()
var dollar = "$"

@IBOutlet var monthlyRent: UITextField!

@IBOutlet var moveInMonth: UITextField!

@IBOutlet var moveInDay: UITextField!

@IBOutlet var moveInYear: UITextField!

@IBOutlet var billOn: UITextField!

@IBOutlet var fieldA: UITextField!


@IBAction func calculate(sender: UIButton) {


    let rentMonthly : Double? = Double(monthlyRent.text!)
    let dayMoveIn : Int? = Int(moveInDay.text!)
    let billingDays : Int? = Int(billOn.text!)
    let monthDays : Double? = Double(daysInMonth)


    switch moveInMonth
    {
    case 1, 3, 5, 7, 8, 10, 12:
        daysInMonth = 31
    case 4, 6, 9, 11:
        daysInMonth = 30
    case 2:
        daysInMonth = 28
    default:
        break
    }


    billingDays2 = billingDays! - addIn
    temp = daysInMonth - dayMoveIn!
    daysLivingThere = temp + billingDays2

    rentPerDay = rentMonthly! / monthDays!
    let a : Double? = Double(daysLivingThere)
    proratedRent = rentPerDay + a!

    let b : String? = String(proratedRent)
    fieldA.text = dollar + b!


}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
    if (segue.identifier == "btnSubmitSegue") {
        let svc = segue.destinationViewController as! SecondViewController;
        svc.dataPassed = fieldA.text!
    }
}

}

All of the code is located inside of a button. I want to transfer the data from the text box to a secondary view controller and desperately need the text box to work.

Upvotes: 0

Views: 172

Answers (3)

Steve
Steve

Reputation: 1431

David is right:

change this:

let rentMonthly : Double? = Double(monthlyRent.text!)
let dayMoveIn : Int? = Int(moveInDay.text!)
let billingDays : Int? = Int(billOn.text!)
let monthDays : Double? = Double(daysInMonth)


switch moveInMonth
{
case 1, 3, 5, 7, 8, 10, 12:
    daysInMonth = 31
case 4, 6, 9, 11:
    daysInMonth = 30
case 2:
    daysInMonth = 28
default:
    break
}

to this:

let rentMonthly : Double? = Double(monthlyRent.text!)
let dayMoveIn : Int? = Int(moveInDay.text!)
let billingDays : Int? = Int(billOn.text!)


switch moveInMonth
{
case 1, 3, 5, 7, 8, 10, 12:
    daysInMonth = 31
case 4, 6, 9, 11:
    daysInMonth = 30
case 2:
    daysInMonth = 28
default:
    break
}

let monthDays : Double? = Double(daysInMonth)

Upvotes: 0

jbcd13
jbcd13

Reputation: 143

To add on to what David Berry said, I ran this in a playground and it failed to compile because "error: constant 'daysInMonth' used before being initialized". Make sure to initialize these values and you should be good.

Upvotes: 0

David Berry
David Berry

Reputation: 41246

Probably because monthDays is set before daysInMonth, which it depends on, move the let monthDays :... line to after the moveInMonth switch.

Upvotes: 1

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