Dialog Fragment with closure to get the content of EditText

SimpleDialogFragment.kt

class RegisterDialogFragment : DialogFragment() {
    var onPositiveClick: ((userName: String) -> Unit)? = null
    var onNegativeClick: (() -> Unit)? = null

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val editText = EditText(context)
        editText.inputType = InputType.TYPE_CLASS_TEXT

        return with(AlertDialog.Builder(context)) {
            setView(editText)
            setTitle("Create a new Profile")
            setMessage("Enter an astronaut Pseudo")
            setPositiveButton("Register") { _, _ -> onPositiveClick?.invoke(editText.text.toString()) }
            setNegativeButton("Cancel") { dialog, _ ->
                dialog.cancel()
                onNegativeClick?.invoke() }
            create()
        }
    }
}


// Usage 
fun showDialog() {
val dialog = RegisterDialogFragment()

  dialog.onPositiveClick = {
      val myEditTextValue = it
  }
  activity?.supportFragmentManager?.let { dialog.show(it, "RegisterDialog") }
}