How to detect when user used Password AutoFill on a UITextField

Question

I\'ve implemented all the app and server changes necessary to support Password Autofill on iOS 11, and it works well. I\'d like it to work a little better.

My usern

Answer 1

This detects when user has autofilled via passwords. It may also trigger when user pastes text from their clipboard. (If textfield is empty)

You can probably handle the logic to remove user pasted cases with this link.. how to know when text is pasted into UITextView

  private var didAutofillTextfield: Bool = false {
    didSet {
      if didAutofillTextfield {
        // Fire analytics for user autofilling
      }
    }
  }


 func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
    // If the range is {0,0} and the string count > 1, then user copy paste text or used password autofill.
    didAutofillTextfield = range == NSRange(location: 0, length: 0) && string.count > 1
    return true
  }