you first create a PickerTextFieldModel like
let model = PickerTextFieldModel(titles: ["Red","Blue","Green"])
then you initialize it like
textField.initializePicker(model: dataSource)
textField.pickerDelegate = self.view as? PickerTextFieldDelegate
and conform to the delegate thats it !!
You can set your arrow image in the @IBInspector as shown below:-
you can set the left offset , placeholder color as well as the placeholder font size
NOTE :- THIS IS A SUBCLASS OF FORM TEXT FIELD PLS ADD THAT TOO IT IS IN THIS REPO
Have a look at the other screenshots:-
