UX68thf6

1import 'dart:async';
2import 'dart:convert';
3import 'package:flutter/material.dart';
4import 'package:http/http.dart' as http;
5
6class Dog {
7  final String id;
8  final String name;
9  final int age;
10
11  Dog({this.id, this.name, this.age});
12
13  factory Dog.fromJson(Map<String, dynamic> json) {
14    return Dog(
15      id: json['id'],
16      name: json['name'],
17      age: json['age'],
18    );
19  }
20}
21
22Future<Dog> fetchDog() async {
23  final response =
24      await http.get('https://5fb5817d36e2fa00166a462d.mockapi.io/dogs/1');
25
26  if (response.statusCode == 200) {
27    return Dog.fromJson(jsonDecode(response.body));
28  }
29  else {
30    throw Exception('Falha ao carregar dados da API!');
31  }
32}
33
34Future<void> deleteDog(String id) async {
35  final http.Response response = await http.delete(
36    'https://5fb5817d36e2fa00166a462d.mockapi.io/dogs/$id',
37    headers: <String, String>{
38      'Content-Type': 'application/json; charset=UTF-8',
39    },
40  );
41
42  if (response.statusCode != 200) {
43    throw Exception('Failed ao deletar dado!');
44  }
45}
46
47void main() => runApp(MyApp());
48
49class MyApp extends StatefulWidget {
50  MyApp({Key key}) : super(key: key);
51
52  @override
53  _MyAppState createState() => _MyAppState();
54}
55
56class _MyAppState extends State<MyApp> {
57  Future<Dog> futureDog;
58
59  @override
60  void initState() {
61    super.initState();
62    futureDog = fetchDog();
63  }
64
65  @override
66  Widget build(BuildContext context) {
67    return MaterialApp(
68      title: 'Exemplo - Read API',
69      theme: ThemeData(
70        primarySwatch: Colors.blue,
71      ),
72      home: Scaffold(
73        appBar: AppBar(
74          title: Text('Exemplo - Read API'),
75        ),
76        body: Center(
77          child: FutureBuilder<Dog>(
78            future: futureDog,
79            builder: (context, snapshot) {
80              if (snapshot.hasData) {
81                return Column(children: <Widget>[
82                  Padding(
83                      padding: EdgeInsets.all(20),
84                      child: Text(snapshot.data.id)),
85                  Padding(
86                      padding: EdgeInsets.all(20),
87                      child: Text(snapshot.data.name)),
88                  Padding(
89                      padding: EdgeInsets.all(20),
90                      child: Text(snapshot.data.age.toString())),
91                  Padding(
92                      padding: EdgeInsets.all(20),
93                      child: RaisedButton(
94                          child: Text('Delete Data'),
95                          onPressed: () {
96                            print(deleteDog("1"));
97                          }))
98                ]);
99              }
100              else if (snapshot.hasError) {
101                return Text("${snapshot.error}");
102              }
103              return CircularProgressIndicator();
104            },
105          ),
106        ),
107      ),
108    );
109  }
110}
111