post json in flutter
import 'dart:async';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
Future<Album> createAlbum(String title) async {
final http.Response response = await http.post(
'https://jsonplaceholder.typicode.com/albums',
headers: <String, String>{
'Content-Type': 'application/json; charset=UTF-8',
},
body: jsonEncode(<String, String>{
'title': title,
}),
);
if (response.statusCode == 201) {
return Album.fromJson(jsonDecode(response.body));
} else {
throw Exception('Failed to create album.');
}
}
class Album {
final int id;
final String title;
Album({this.id, this.title});
factory Album.fromJson(Map<String, dynamic> json) {
return Album(
id: json['id'],
title: json['title'],
);
}
}
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
MyApp({Key key}) : super(key: key);
@override
_MyAppState createState() {
return _MyAppState();
}
}
class _MyAppState extends State<MyApp> {
final TextEditingController _controller = TextEditingController();
Future<Album> _futureAlbum;
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Create Data Example',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
appBar: AppBar(
title: Text('Create Data Example'),
),
body: Container(
alignment: Alignment.center,
padding: const EdgeInsets.all(8.0),
child: (_futureAlbum == null)
? Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
TextField(
controller: _controller,
decoration: InputDecoration(hintText: 'Enter Title'),
),
ElevatedButton(
child: Text('Create Data'),
onPressed: () {
setState(() {
_futureAlbum = createAlbum(_controller.text);
});
},
),
],
)
: FutureBuilder<Album>(
future: _futureAlbum,
builder: (context, snapshot) {
if (snapshot.hasData) {
return Text(snapshot.data.title);
} else if (snapshot.hasError) {
return Text("${snapshot.error}");
}
return CircularProgressIndicator();
},
),
),
),
);
}
}