/* Copyright 2018 The Chromium Authors. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Google Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ import 'dart:async'; import 'dart:convert'; import 'package:flutter/material.dart'; import 'package:http/http.dart' as http; const url = ''; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Book Finder', theme: ThemeData( primarySwatch:, ), home: BookFinderPage(), ); } } class BookFinderPage extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('Book Finder'), leading: Icon(, ), body: FutureBuilder( future: _fetchPotterBooks(), builder: (context, AsyncSnapshot<List<Book>> snapshot) { if (snapshot.connectionState == ConnectionState.done) { if (snapshot.hasError) { return Center(child: Text('Error: ${snapshot.error}')); } else { return ListView( children: => BookTile(b)).toList()); } } else { return Center(child: CircularProgressIndicator()); } }), ); } } class BookTile extends StatelessWidget { final Book book; BookTile(; @override Widget build(BuildContext context) { return ListTile( leading: CircleAvatar( backgroundImage: NetworkImage(book.thumbnailUrl), ), title: Text(book.title), subtitle: Text(, onTap: () => _navigateToDetailsPage(book, context), ); } } List<Book> _fetchBooks() { return List.generate(100, (i) => Book(title: 'Book $i', author: 'Author $i')); } Future<List<Book>> _fetchPotterBooks() async { final res = await http.get(url); if (res.statusCode == 200) { return _parseBookJson(res.body); } else { throw Exception('Error: ${res.statusCode}'); } } List<Book> _parseBookJson(String jsonStr) { final jsonMap = json.decode(jsonStr); final jsonList = (jsonMap['items'] as List); return jsonList .map((jsonBook) => Book( title: jsonBook['volumeInfo']['title'], author: (jsonBook['volumeInfo']['authors'] as List).join(', '), thumbnailUrl: jsonBook['volumeInfo']['imageLinks'] ['smallThumbnail'], )) .toList(); } class Book { final String title; final String author; final String thumbnailUrl; Book({@required this.title, @required, this.thumbnailUrl}) : assert(title != null), assert(author != null); } void _navigateToDetailsPage(Book book, BuildContext context) { Navigator.of(context).push(MaterialPageRoute( builder: (context) => BookDetailsPage(book), )); } class BookDetailsPage extends StatelessWidget { final Book book; BookDetailsPage(; @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar(title: Text(book.title)), body: Padding( padding: const EdgeInsets.all(15.0), child: BookDetails(book), ), ); } } class BookDetails extends StatelessWidget { final Book book; BookDetails(; @override Widget build(BuildContext context) { return Center( child: Column( mainAxisAlignment: MainAxisAlignment.start, children: [, SizedBox(height: 10.0), Text(book.title), Padding( padding: const EdgeInsets.only(top: 10.0), child: Text(, style: TextStyle(fontWeight: FontWeight.w700)), ), ], ), ); } }
A simple book list Flutter example using the Google Books API

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