Flutter音频播放插件audioplayersmodify的使用

在Flutter开发中，audioplayersmodify 是一个功能强大的音频播放插件，可以用于播放远程URL、本地文件和本地资源中的音频。本文将通过完整的示例代码展示如何使用该插件。

环境配置

首先，确保在 pubspec.yaml 文件中添加依赖项：

dependencies:
  audioplayersmodify: ^最新版本号

然后运行以下命令以安装依赖项：

flutter pub get

示例代码

以下是完整的示例代码，展示了如何使用 audioplayersmodify 插件来播放不同类型的音频。

完整示例代码

import 'dart:async';
import 'dart:io';

import 'package:audioplayersmodify/audioplayers.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:http/http.dart';
import 'package:path_provider/path_provider.dart';
import 'package:provider/provider.dart';

void main() {
  runApp(MaterialApp(home: ExampleApp()));
}

class ExampleApp extends StatefulWidget {
  [@override](/user/override)
  _ExampleAppState createState() => _ExampleAppState();
}

class _ExampleAppState extends State<ExampleApp> {
  AudioCache audioCache = AudioCache();
  AudioPlayer advancedPlayer = AudioPlayer();
  String? localFilePath;

  [@override](/user/override)
  void initState() {
    super.initState();
    if (kIsWeb) {
      return;
    }
    if (Platform.isIOS) {
      audioCache.fixedPlayer?.notificationService.startHeadlessService();
    }
  }

  Future<void> _loadFile() async {
    final bytes = await readBytes(Uri.parse('https://luan.xyz/files/audio/ambient_c_motion.mp3'));
    final dir = await getApplicationDocumentsDirectory();
    final file = File('${dir.path}/audio.mp3');
    await file.writeAsBytes(bytes);
    if (file.existsSync()) {
      setState(() => localFilePath = file.path);
    }
  }

  Widget remoteUrl() {
    return const SingleChildScrollView(
      child: TabWrapper(
        children: [
          Text('Sample 1 (Remote URL)', style: TextStyle(fontWeight: FontWeight.bold)),
          PlayerWidget(url: 'https://luan.xyz/files/audio/ambient_c_motion.mp3'),
          Text('Sample 2 (Remote URL)', style: TextStyle(fontWeight: FontWeight.bold)),
          PlayerWidget(url: 'https://luan.xyz/files/audio/nasa_on_a_mission.mp3'),
        ],
      ),
    );
  }

  Widget localFile() {
    return TabWrapper(
      children: [
        const Text('-- Manually Load Bytes (No Web!) --'),
        const Text('File: https://luan.xyz/files/audio/ambient_c_motion.mp3'),
        Btn(txt: 'Download File to Your Device', onPressed: _loadFile),
        Text('Current Local File Path: $localFilePath'),
        if (localFilePath != null) PlayerWidget(url: localFilePath!),
      ],
    );
  }

  Widget localAsset() {
    return SingleChildScrollView(
      child: TabWrapper(
        children: [
          const Text("Play Local Asset 'audio.mp3':"),
          Btn(txt: 'Play', onPressed: () => audioCache.play('audio.mp3')),
          const Text("Play Local Asset In Low Latency 'audio.mp3':"),
          Btn(
            txt: 'Play',
            onPressed: () {
              audioCache.play('audio.mp3', mode: PlayerMode.LOW_LATENCY);
            },
          ),
        ],
      ),
    );
  }

  Widget notification() {
    return TabWrapper(
      children: [
        const Text("Play Notification Sound 'messenger.mp3':"),
        Btn(
          txt: 'Play',
          onPressed: () => audioCache.play('messenger.mp3', isNotification: true),
        ),
        const Text('Notification Service'),
        Btn(
          txt: 'Start Notification',
          onPressed: () async {
            await advancedPlayer.notificationService.startHeadlessService();
            await advancedPlayer.notificationService.setNotification(
              title: 'My Song',
              albumTitle: 'My Album',
              artist: 'My Artist',
              imageUrl: 'Image URL or blank',
              forwardSkipInterval: const Duration(seconds: 30),
              backwardSkipInterval: const Duration(seconds: 30),
              duration: const Duration(minutes: 3),
              elapsedTime: const Duration(seconds: 15),
              enableNextTrackButton: true,
              enablePreviousTrackButton: true,
            );
            await advancedPlayer.play('https://luan.xyz/files/audio/nasa_on_a_mission.mp3', isLocal: false);
          },
        ),
        Btn(
          txt: 'Clear Notification',
          onPressed: () async {
            await advancedPlayer.stop();
            await advancedPlayer.notificationService.clearNotification();
          },
        ),
      ],
    );
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        StreamProvider<Duration>.value(
          initialData: const Duration(),
          value: advancedPlayer.onAudioPositionChanged,
        ),
      ],
      child: DefaultTabController(
        length: 4,
        child: Scaffold(
          appBar: AppBar(
            bottom: const TabBar(
              tabs: [
                Tab(text: 'Remote URL'),
                Tab(text: 'Local File'),
                Tab(text: 'Local Asset'),
                Tab(text: 'Notification'),
              ],
            ),
            title: const Text('audioplayers Example'),
          ),
          body: TabBarView(
            children: [
              remoteUrl(),
              localFile(),
              localAsset(),
              notification(),
            ],
          ),
        ),
      ),
    );
  }
}