setDefaultValue method

void setDefaultValue()

Implementation

void setDefaultValue() {
//  Log.i("setDefaultValue()");
  /**
      "There should be exactly one item with [DropdownButton]'s value: One. \nEither zero or 2 or more [DropdownMenuItem]s were detected with the same value"
   */
  dropdownValue = key_position_hint;// listChildWidget[0];
}