「Flutter/外部ライブラリ/shared preferences」の版間の差分
提供: 初心者エンジニアの簡易メモ
| 行9: | 行9: | ||
flutter packages get | flutter packages get | ||
| + | |||
| + | ==サンプル== | ||
| + | import 'package:shared_preferences/shared_preferences.dart'; | ||
| + | <pre> | ||
| + | _incrementCounter() async { | ||
| + | SharedPreferences prefs = await SharedPreferences.getInstance(); | ||
| + | int counter = (prefs.getInt('counter') ?? 0) + 1; | ||
| + | print('Pressed $counter times.'); | ||
| + | await prefs.setInt('counter', counter); | ||
| + | } | ||
| + | </pre> | ||
==参考== | ==参考== | ||
2019年4月26日 (金) 10:37時点における版
pubspec.yaml
dependencies:
flutter:
sdk: flutter
shared_preferences: ^0.5.2
flutter packages get
サンプル
import 'package:shared_preferences/shared_preferences.dart';
_incrementCounter() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
int counter = (prefs.getInt('counter') ?? 0) + 1;
print('Pressed $counter times.');
await prefs.setInt('counter', counter);
}
