Xylophone

75. Packages
76. Eseguire un file audio
77. Suoni multipli
79 + 82. Expanded, CrossAxisAlignment, funzioni per contenere gruppi di Widget

name: angela5
description: "A new Flutter project."
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev

version: 1.0.0+1

environment:
  sdk: ^3.7.2

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.8
  audioplayers: ^6.4.0

dev_dependencies:
  flutter_test:
    sdk: flutter

  flutter_lints: ^5.0.0

# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec

# The following section is specific to Flutter packages.
flutter:

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

  assets:
    - assets/audio/

import 'package:flutter/material.dart';
import 'package:audioplayers/audioplayers.dart';

void main() => runApp(XylophoneApp());

class XylophoneApp extends StatefulWidget {
  const XylophoneApp({super.key});

  @override
  State<XylophoneApp> createState() => _XylophoneAppState();
}

class _XylophoneAppState extends State<XylophoneApp> {
  final AudioPlayer _audioPlayer = AudioPlayer();

  Expanded buildKey({Color color = Colors.red, int soundNumber = 1}) {
    return Expanded(
      child: TextButton(
        onPressed: () {
          playSound(soundNumber);
        },
        child: Container(
          padding: EdgeInsets.symmetric(horizontal: 20, vertical: 12),
          decoration: BoxDecoration(
            color: color,
            borderRadius: BorderRadius.circular(
              8.0,
            ), // Opzionale: per angoli arrotondati
          ),
          child: Center(
            child: Text(
              '',
              style: TextStyle(
                color: Colors.white,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
        ),
      ),
    );
  }

  @override
  void dispose() {
    _audioPlayer.dispose(); // Importante rilasciare le risorse
    super.dispose();
  }

  Future<void> playSound(int soundNumber) async {
    await _audioPlayer.play(AssetSource('audio/note$soundNumber.wav'));
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.black,
        body: SafeArea(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: <Widget>[
              buildKey(color: Colors.red, soundNumber: 1),
              buildKey(color: Colors.orange, soundNumber: 2),
              buildKey(color: Colors.yellow, soundNumber: 3),
              buildKey(color: Colors.green, soundNumber: 4),
              buildKey(color: Colors.teal, soundNumber: 5),
              buildKey(color: Colors.blue, soundNumber: 6),
              buildKey(color: Colors.purple, soundNumber: 7),
            ],
          ),
        ),
      ),
    );
  }
}