【Flutter】テキストのシェア機能を実装する

Sample

ライブラリは share_plus を使用します。

（share を使用していましたが、サポートされなくなったため、share_plusに切り替えています）

Environment

Flutter 3.7.6 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 12cb4eb7a0 (5 days ago) • 2023-03-01 10:29:26 -0800
Engine • revision ada363ee93
Tools • Dart 2.19.3 • DevTools 2.20.1

Introduce

$ flutter pub add share_plus

environment:
  sdk: '>=2.19.3 <3.0.0'

dependencies:
  flutter:
    sdk: flutter

  // This
  share_plus: ^6.3.1

Implementation

import 'package:share_plus/share_plus.dart';

class MyApp extends StatelessWidget {
    const MyApp({super.key});

    final _title = 'Share App';

    @override
    Widget build(BuildContext context) {
      return MaterialApp(
        title: _title,
        theme: ThemeData(
          primarySwatch: Colors.blue,
        ),
        home: MyHomePage(title: _title),
      );
    }
  }

class MyHomePage extends StatefulWidget {
    const MyHomePage({super.key, required this.title});

    final String title;

    @override
    State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
    @override
    Widget build(BuildContext context) {
      return Scaffold(
        appBar: AppBar(
          title: const Text('Share Sample'),
          actions: [
            IconButton(
              icon: const Icon(Icons.share),
              onPressed: () => _share('Sample Text'),
            ),
          ],
        ),
      );
    }

    void _share(String text) => Share.share(text);
}