flutter loop inside a widget - dart

Question

I'm new to flutter and was wondering if anyone would be able to guide me.
I would like to irritate through a string that I retrieved from a json file. I would like to display each letter separately. Example below.
Output
Complete Word: Hi
Letter pos 0: H
Letter pos 1: I
What I tried so far is adding a for loop below the itemBuilder but can't retrieve the variable inside the card. I tried adding a for loop inside the Widget and it doesn't allow me.
Any input would be greatly appreciated!
import 'dart:convert';
import 'package:flutter/material.dart';
void main() {
runApp(new MaterialApp(
home: new MyApp(),
));
}
class MyApp extends StatefulWidget {
#override
MyAppState createState() => new MyAppState();
}
class MyAppState extends State<MyApp> {
List data;
#override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text("Load local JSON file"),
),
body: new Container(
child: new Center(
// Use future builder and DefaultAssetBundle to load the local JSON file
child: new FutureBuilder(
future: DefaultAssetBundle
.of(context)
.loadString('data_repo/starwars_data.json'),
builder: (context, snapshot) {
// Decode the JSON
var new_data = JSON.decode(snapshot.data.toString());
return new ListView.builder(
// Build the ListView
itemBuilder: (BuildContext context, int index) {
return new Card(
child: new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
new Text("Complete Word: " + new_data[index]['complete_word'])
],
),
);
},
itemCount: new_data == null ? 0 : new_data.length,
);
}),
),
));
}
}

Answer 1

Create a method and within it create a list of widgets. Include the widgets and then return the list.
Example
child: new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: ListMyWidgets()),
List<Widget> ListMyWidgets() {
List<Widget> list = new List();
list.add(new Text("hi"));
list.add(new Text("hi2"));
list.add(new Text("hi3"));
return list;
}