How do I update textfield2 based on editing textfield1?

Question

I like to update textfield2 as soon as totalAmount has been edited, I am trying the following:

    totalAmount.addTarget(self, action: "changeTextField2:", forControlEvents: UIControlEvents.EditingDidEndOnExit)

 func changeTextField2(textField: UITextField) {
        print("Total amount: \(totalAmount.text)")
        //amount vat - calculate vat based on textField
        amountVAT.text = "88"
    }

And i am saving the text field values with

func newItem(){

    let context = self.context
    let ent = NSEntityDescription.entityForName("List", inManagedObjectContext: context)


    let nItem = List(entity: ent!, insertIntoManagedObjectContext: context)
    let numberFormatter = NSNumberFormatter()

    nItem.amountVAT = numberFormatter.numberFromString(amountVAT.text!)
    .....more values
    nItem.invoiceImage = UIImagePNGRepresentation(imageHolder.image!)

    do {
     try context.save()
    } catch {
        print(error)
    }
}
func saveValues(sender: AnyObject) {

        if nItem != nil {
            editItem()
        } else {
            newItem()
        }

        dismissVC()
    }

score 2 · Accepted Answer · edited Sep 04 '15 at 10:15

2

This can be done using UITextFieldDelegate Method use this function 1.)

textField1.delegate = self

2.)

func textFieldDidEndEditing(textField: UITextField)
{
   if textField == textField1
   {
      textField2.text = textField1.text
   }
}

now its upto you how you change the totalAmount.

edited Sep 04 '15 at 10:15

Shamas S

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answered Sep 04 '15 at 10:10

baydi

1,003
6
11

textfield is updated but when i save the new textfield value it stores an empty value? – alex Sep 04 '15 at 10:45
do you have any ideas? – alex Sep 04 '15 at 14:08

score 1 · Answer 2 · answered Sep 04 '15 at 10:00

1

Use the delegate function of UITextField - textFieldDidEndEditing: for your textField1. Once in this function, you can get value of textField1 and you can edit textField2.

Apple Documentation for UITextFieldDelegate

answered Sep 04 '15 at 10:00

Shamas S

7,507
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46
58

score 0 · Answer 3 · answered Sep 04 '15 at 10:22

0

Change the code to this totalAmount.addTarget(self, action: "changeTextField2:", forControlEvents: UIControlEvents.EditingChanged)

i.e change the UIControlEvents to "EditingChanged"

answered Sep 04 '15 at 10:22

Nilesh Kumar

2,141
3
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How do I update textfield2 based on editing textfield1?

3 Answers3