How do I pass the value of index from the constructor of Test to the build method?

class Test extends StatefulWidget {
  final int index;  //How do I pass the value of this index....
  const Test(this.index);

  @override
  State<Test> createState() => _TestState();
}

class _TestState extends State<Test> {
  @override
  Widget build(BuildContext context) {
    getFollowers(index).then((response) {   //..to here?
      setState(() {
        Iterable followerPlaceHolder = json.decode(response.body);
        followerList =
            followerPlaceHolder.map((model) => Data.fromJson(model)).toList();
      });
    });

    return SafeArea(
      child: Scaffold(
        body: ExpansionTile(
          title: const Text("Followers"),
          children: [
            ListView.builder(
              itemCount: followerList.length,
              scrollDirection: Axis.vertical,
              itemBuilder: (context, value) {
                return ListTile(
                  leading: CircleAvatar(
                    backgroundImage:
                        NetworkImage(followerList[value].avatarUrl),
                  ),
                );
              },
            ),
          ],
        ),
      ),
    );
  }
}

CodePudding user response：

You can access widget.index in the build method.

CodePudding user response：

just call any value in statefulWidget class with widget.varName(your variable name)

CodePudding user response：

Just use widget.index

class Test extends StatefulWidget {
  final int index;  //How do I pass the value of this index....
  const Test(this.index);
  @override
  State<Test> createState() => _TestState();
}

class _TestState extends State<Test> {
  @override
  Widget build(BuildContext context) {
   
    return SafeArea(
      child: Scaffold(
        body: Text(widget.index.toString()),  // just use widget.index
      ),
    );
  }
}