'How to import specific Widget to another file

I have created this date picker

Widget completedDatePicker() => Column(
children: [
  buildDatePicker(),
  confirmButton(),
  ]);

and I want to import just this widget to another file like this enter image description here

how do I import it and should I use Stack class to make it like the picture above



Solution 1:[1]

Well you can move it to its own class with its own context(basically as a stateful or stateless widget) And then you can use it anywhere you need it.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 griffins