Protocol Not Preparing Data

Question

ZoneX OP

Created Dec ’20

Replies 3

Boosts 0

Participants 3

I have an issue trying to transfer a number (numText) in a textField. When I type a number it prints 0.

Code Block func sendTypedNumToParent() {
    if anotherNum != nil {
      let data = numText
      anotherNum?.sendTyped(data: data)
      print("this is the typed number being transferred \(data)")
    }
  }

I know I have the number when I enter it because I can print it in my return function. What is the issue here?

Code Block func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    textField.resignFirstResponder()
    let text = textField.text
    let numText = originalNum
     
    if revNumber.text == text {
      revSlider.value = Float(numText) / 6.75675675676
      revHeight.constant = CGFloat(revSlider.value)
      if numText < 316 {
        revLabel.text = ""
      } else {
        revLabel.text = "Revenue"
      }
    }
    print("I typed this \(numText)")
    sendTypedNumToParent()
    let name = Notification.Name(rawValue: typedCal)
    NotificationCenter.default.post(name: name, object: nil)
    return true
  }

Answered by ZoneX in 650495022

I found my mistake I was trying to transfer numText instead of originalNum.

Code Block func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {
      // Make sure the user entered a number
    let num = Double(textField.text!)
    originalNum = Int(textField.text!)!
    if num! < 0 {
        textField.text = "0"
    } else if num! > 1000 {
        textField.text = "1000"
    } else if num! >= 0 || num! <= 1000 {
        textField.text = String(Int(num!))
    }
    return true
  }

Code Block let numText = originalNum

Boost

Answer 1

Claude31 OP

Dec ’20

You post a notification.

Who subscribes to this notification ?
What do you do on receiving notification ?

Why do you call sendTypedNumToParent() and sendNotification ? What is the purpose of each of them ?

Please show code.

0

Answer 2

OOPer OP

Dec ’20

I know I have the number when I enter it because I can print it in my return function.

You mean textFieldShouldReturn(_:) by my return function?
You print the value of the local variable numText, but the numText in sendTypedNumToParent() is not the same thing.
So, " I can print it in my return function" does not guarantee you have the number.

How have you defined numText used in sendTypedNumToParent()?

Better use parameters to pass some values that you know you have.

Code Block     func sendTypedNumToParent(data: Int) {
        if let anotherNum = anotherNum {
            anotherNum.sendTyped(data: data)
            print("this is the typed number being transferred \(data)")
        }
    }
    
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        let text = textField.text
        let numText = originalNum
         
        if revNumber.text == text {
          revSlider.value = Float(numText) / 6.75675675676
          revHeight.constant = CGFloat(revSlider.value)
          if numText < 316 {
            revLabel.text = ""
          } else {
            revLabel.text = "Revenue"
          }
        }
        print("I typed this \(numText)")
        sendTypedNumToParent(data: numText)
        let name = Notification.Name(rawValue: typedCal)
        NotificationCenter.default.post(name: name, object: nil)
        return true
      }

I guess the type of numText is Int. (You like forcing readers guess many things.)
If it is not, the code above needs to be modified.

0

Answer 3

ZoneX OP

Dec ’20

Accepted Answer

I found my mistake I was trying to transfer numText instead of originalNum.

Code Block func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {
      // Make sure the user entered a number
    let num = Double(textField.text!)
    originalNum = Int(textField.text!)!
    if num! < 0 {
        textField.text = "0"
    } else if num! > 1000 {
        textField.text = "1000"
    } else if num! >= 0 || num! <= 1000 {
        textField.text = String(Int(num!))
    }
    return true
  }

Code Block let numText = originalNum

0