Question 244886 in Flutter Question posted in
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Flutter – The argument type 'List<dynamic>' can't be assigned to the parameter type 'List<Widget>'.dartargument_type_not_assignable

I am working on a question application. I am trying to create a list in order to put icons in it so that if the person answers the question, the result of the answer will appear, but I saw this error inside the row!!!
**The argument type ‘List’ can’t be assigned to the parameter type ‘List’.dartargument_type_not_assignable **

-> this is the code

class exampage extends StatefulWidget {
  const exampage({Key? key}) : super(key: key);

  @override
  State<exampage> createState() => _exampageState();
}

class _exampageState extends State<exampage> {
  List answerResult = [
    Padding(
      padding: const EdgeInsets.all(3.0),
      child: Icon(
        Icons.check,
        color: Color.fromARGB(255, 27, 135, 76),
      ),
    ),
    Padding(
      padding: const EdgeInsets.all(3.0),
      child: Icon(
        Icons.close,
        color: Color.fromARGB(255, 223, 84, 75),
      ),
    ),
  ];
  @override
  Widget build(BuildContext context) {
    return Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: [
      Row(
        children: answerResult,
      ),

Isn’t everything correct, what’s the problem with the error?

what should I try ?

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    I find the solution if you have the same error just add <Widget> after list

    like this :

    List<Widget> answerResult = [
Padding(
  padding: const EdgeInsets.all(3.0),
  child: Icon(
    Icons.check,
    color: Color.fromARGB(255, 27, 135, 76),
  ),
),
Padding(
  padding: const EdgeInsets.all(3.0),
  child: Icon(
    Icons.close,
    color: Color.fromARGB(255, 223, 84, 75),
  ),
),
];

  2. 0

    Just Explaining @Balkis’s Answer:
    To resolve this issue, specify the type of the List when you declare answerResult. If you do not specify the type of a List in dart it is considered as dynamic type. So change:

    List answerResult = [

    to:

    List<Widget> answerResult = [

    With this change, you’re explicitly telling Dart that answerResult is a List of Widgets, and you shouldn’t encounter the error when you use it in the Row’s children.

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