Error: Either zero or 2 or more [DropdownMenuItem]s were detected with the same value I/flutter (18363): 'package:flutter/src/material/dropdown.dart':

Question

Error code Hi I\'m new to flutter and have a question about dropdownbutton regarding using the same values for multiple dropdownbutton.

From my understanding from th

Answer 1

I have the same problem, and I solved it. The dropdown button needs items list and value. We define items and selected items, but the item chosen instance does not inside the items list.

You should try this and fix your logic. (value ıs selected item value for user)

 var _value = itemList.isEmpty
    ? value
    : itemList.firstWhere((item) => item.value == value.value);

More : https://gist.github.com/VB10/fd560694fec0a38751e798a213408001