Request: Birthday Input

[bgoncharuck]

It would be nice to have another mode, with this dialog first

And then open Date Picker only if you need it, by the calendar icon.

You already have this mode, but you need to click on "edit" icon inside date picker first.
I suggest swapping them and add a separate DateTimePickerType called "birthDate".
It will benefit Flutter community a lot.

Because, for birthdates we have two best quick options: InputDatePickerFormField which lack decoration or cupertino date picker which is non-material style widget.