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import 'package:flutter/material.dart';
import 'package:location/location.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart';
///////////////////////////////
void main() => runApp(MyApp());
///////////////////////////////
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
///////////////////////////////
void main() => runApp(MyApp());
///////////////////////////////
class MyApp extends StatelessWidget {
@override
import 'dart:convert';
void main() {
var mapObj = {"title":"TODO-1", "status":true};
print(mapObj);
var jsonStr = jsonEncode(mapObj);
print(jsonStr);
var mapObj2 = jsonDecode(jsonStr);
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'dart:convert' as convert;
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
// ① APIの利用に必要なライブラリをインポートする
import 'package:http/http.dart' as http;
import 'dart:convert' as convert;
void main() async {
// ② APIにアクセスする
var url = Uri.parse(
'https://mocha-api.t.u-tokyo.ac.jp/resource/channel/utokyo_all/congestion');
var response = await http.get(url);
import 'package:flutter/material.dart';
import 'package:sensors/sensors.dart';
///////////////////////////////
void main() => runApp(MyApp());
///////////////////////////////
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
import 'package:flutter/material.dart';
///////////////////////////////
void main() => runApp(MyApp());
///////////////////////////////
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(theme: ThemeData(), home: MyHomePage());
final _textFieldController = TextEditingController();
Future<String?> _showTextInputDialog(BuildContext context) async {
return showDialog(
context: context,
builder: (context) {
return AlertDialog(
title: const Text('タイトル'),
content: TextField(
controller: _textFieldController,
import 'package:flutter/material.dart';
// ① 必要なライブラリをインポート
import 'package:shared_preferences/shared_preferences.dart';
///////////////////////////////
void main() => runApp(MyApp());
///////////////////////////////
class MyApp extends StatelessWidget {
import 'package:flutter/material.dart';
///////////////////////////////
// ① Main:Flutterアプリもmain()からコードが実行されます。
// `void main() => runApp(MyApp());` でも意味は同じです。
void main() {
return runApp(MyApp());
}
///////////////////////////////