ListViewJSONLocal.dart

ListViewJSONLocal.dart

import 'package:flutter/material.dart';

// Needed for JSON from URL
import 'dart:async';
import 'package:http/http.dart' as http;

// Needed to Conver JSON Network and Local file
import 'dart:convert';

// Needed for JSON from local
// UPDATE: No, Not Needed 
import 'package:flutter/services.dart' show rootBundle;
import 'package:json_annotation/json_annotation.dart';



void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {


// Call JSON from Local File

  Future<List<Movies>> _getMovies() async {
  
    var data = await DefaultAssetBundle.of(context).loadString("lib/assets/movies.json");
    var jsonResult = json.decode(data);

    List<Movies> users = [];

    for (var u in jsonResult) {
      Movies user =

      // This order must match the order in the JSON definition at the bottom
          Movies(u["index"], u["picture"], u["name"]);
      users.add(user);
    }

    print(users.length);
    return users;   
  }

  @override
  Widget build(BuildContext context) {

    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Container(
        child: FutureBuilder(
          future: _getMovies(),
          builder: (BuildContext context, AsyncSnapshot snapshot) {
            if (snapshot.data == null) {
              return Container(
                child: Center(
                  child: Text('loading...'),
                ),
              );
            } else {
              return ListView.builder(
                itemCount: snapshot.data.length,
                itemBuilder: (BuildContext context, int index) {
                  return ListTile(
                    leading: CircleAvatar(
                      backgroundImage:
                          NetworkImage(snapshot.data[index].picture),
                    ),
                    title: Text(snapshot.data[index].name),
                    //subtitle: Text(snapshot.data[index].email),
                    onTap: (){
                    
                      // Navigator.push(context,
                      // new MaterialPageRoute(builder: (context) => ListDetailView(snapshot.data[index]))
                      // );
                    },
                  );
                },
              );
            }
          },
        ),
      ),
    );
  }
}

class Movies {
  final int index;
  final String name;
  final String picture;

  Movies(this.index, this.picture, this.name);
}

class Student{
  String studentId;
  String studentName;
  int studentScores;

  Student({
    this.studentId,
    this.studentName,
    this.studentScores
 });

}