FlutterApp 3

import 'dart:async';
import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

void main() {
  runApp(new MaterialApp(
    home: new RepoListPage(),
    routes: <String, WidgetBuilder> {
      '/detail' : (BuildContext context) => new PullRequestsPage(),
    },
  ));
}

class PullRequestsPage extends StatefulWidget {

  @override
  PullRequestsPageState createState() => new PullRequestsPageState();
}

class PullRequestsPageState extends State<PullRequestsPage> {

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text("Feijoada"),
      ),
      body: new Text("acontece"),
    );
  }
}

class RepoListPage extends StatefulWidget {
  @override
  RepoListPageState createState() => new RepoListPageState();
}

class RepoListPageState extends State<RepoListPage> {
  List data;

  Future<String> getData() async {
    var response = await http.get(
        Uri.encodeFull(
            "https://api.github.com/search/repositories?q=language:Java&sort=stars"),
        headers: {"Accept": "application/json"});

    this.setState(() {
      data = JSON.decode(response.body)["items"];
    });
    print(data[1]["name"]);

    return "Success!";
  }

  @override
  void initState() {
    this.getData();
  }

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text("Listviews"),
      ),
      body: new ListView.builder(
        itemCount: data == null ? 0 : data.length,
        itemBuilder: (BuildContext context, int index) {
          return createListItem(context, data[index]);
        },
      ),
    );
  }

  Widget createListItem(context, data) => new FlatButton(
      onPressed: () {
        Scaffold.of(context).showSnackBar(new SnackBar(
          content: new Text(data["name"]),

        ));
        Navigator.of(context).pushNamed('/detail');
      },
      child: new Container(
        padding: const EdgeInsets.all(16.0),
        child: new Row(
          children: [
            new Expanded(
              child: new Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  new Container(
                    padding: const EdgeInsets.only(bottom: 8.0),
                    child: new Text(
                      data["name"],
                      style: new TextStyle(
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ),
                  new Text(
                    data["description"],
                    maxLines: 3,
                    style: new TextStyle(
                      color: Colors.grey[500],
                    ),
                  ),
                  new Row(
                    children: <Widget>[
                      new Icon(
                        Icons.content_copy,
                        color: Colors.yellow[700],
                      ),
                      new Text('${data["forks_count"]}',
                          style: new TextStyle(color: Colors.yellow[700])),
                      new Icon(
                        Icons.star,
                        color: Colors.yellow[700],
                      ),
                      new Text('${data["stargazers_count"]}',
                          style: new TextStyle(color: Colors.yellow[700])),
                    ],
                  ),
                ],
              ),
            ),
            new Column(
              children: <Widget>[
                new Image.network(data["owner"]["avatar_url"],
                    fit: BoxFit.cover, width: 64.0, height: 64.0),
                new Text(data["owner"]["login"])
              ],
            )
          ],
        ),
      ));
}