Question 67446 in IOS Swift Question posted in
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how to remove first character from textfield value in swift – Ios swift

If my textfield takes 11 characters and I need to remove first character and then pass it as a parameter. I tried this code:

var dropFirst: String?
if emailPhoneTextField.text?.count == 11{
    dropFirst = emailPhoneTextField.text?.dropFirst()
        emailPhoneTextField.text = dropFirst 
    }

I receive this error:

Cannot assign value of type ‘String.SubSequence?’ (aka ‘Optional’) to type ‘String?’

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2

Answers


  1. 0

    dropFirst returns SubSequence so you can’t assign it directly to textfield’s text property that accepts an optional string (String?) , So replace

    dropFirst = emailPhoneTextField.text?.dropFirst()

    With

    dropFirst = String(emailPhoneTextField.text!.dropFirst())
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  2. 0

    Create String extension to assign SubSequence to String property.

    extension String {
    mutating func removeFirstChar() {
      self = String(self.dropFirst())
    } 
}
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