110 lines
3.5 KiB
Dart
110 lines
3.5 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:audioplayers/audioplayers.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import '../models/prank_sound.dart';
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class SoundManager {
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static final SoundManager _instance = SoundManager._internal();
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factory SoundManager() => _instance;
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SoundManager._internal();
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final AudioPlayer audioPlayer = AudioPlayer();
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// 播放状态 Notifiers
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final ValueNotifier<PrankSound?> currentSoundNotifier = ValueNotifier(null);
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final ValueNotifier<bool> isPlayingNotifier = ValueNotifier(false);
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final ValueNotifier<Duration> positionNotifier = ValueNotifier(Duration.zero);
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final ValueNotifier<Duration> durationNotifier = ValueNotifier(Duration.zero);
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// 设置状态 Notifiers (支持 UI 监听)
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final ValueNotifier<double> volumeNotifier = ValueNotifier(1.0); // 默认 100%
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final ValueNotifier<bool> loopNotifier = ValueNotifier(false); // 默认不循环
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static const String KEY_VOLUME = 'app_volume';
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static const String KEY_LOOP = 'app_loop';
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Future<void> init() async {
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// 监听播放器事件
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audioPlayer.onPlayerStateChanged.listen((state) {
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isPlayingNotifier.value = state == PlayerState.playing;
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});
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audioPlayer.onDurationChanged.listen((d) {
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durationNotifier.value = d;
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});
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audioPlayer.onPositionChanged.listen((p) {
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positionNotifier.value = p;
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});
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audioPlayer.onPlayerComplete.listen((_) {
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// 只有在非循环模式下，播放结束才停止
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if (!loopNotifier.value) {
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isPlayingNotifier.value = false;
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positionNotifier.value = Duration.zero;
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}
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});
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// 加载本地设置
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final prefs = await SharedPreferences.getInstance();
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final double savedVolume = prefs.getDouble(KEY_VOLUME) ?? 1.0;
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final bool savedLoop = prefs.getBool(KEY_LOOP) ?? false;
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// 更新内存状态
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volumeNotifier.value = savedVolume;
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loopNotifier.value = savedLoop;
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// 应用到播放器
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await audioPlayer.setVolume(savedVolume);
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await audioPlayer.setReleaseMode(savedLoop ? ReleaseMode.loop : ReleaseMode.stop);
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}
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// 设置音量并保存
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Future<void> setVolume(double volume) async {
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volumeNotifier.value = volume;
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await audioPlayer.setVolume(volume);
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final prefs = await SharedPreferences.getInstance();
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await prefs.setDouble(KEY_VOLUME, volume);
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}
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// 设置循环并保存
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Future<void> setLooping(bool loop) async {
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loopNotifier.value = loop;
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await audioPlayer.setReleaseMode(loop ? ReleaseMode.loop : ReleaseMode.stop);
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final prefs = await SharedPreferences.getInstance();
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await prefs.setBool(KEY_LOOP, loop);
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}
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Future<void> play(PrankSound sound) async {
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try {
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if (currentSoundNotifier.value == sound) {
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if (isPlayingNotifier.value) {
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await audioPlayer.pause();
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} else {
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await audioPlayer.resume();
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}
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} else {
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await audioPlayer.stop();
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currentSoundNotifier.value = sound;
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// 播放前确保应用了当前的设置
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await audioPlayer.setVolume(volumeNotifier.value);
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await audioPlayer.setReleaseMode(loopNotifier.value ? ReleaseMode.loop : ReleaseMode.stop);
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if (sound.mp3Url.isNotEmpty) {
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await audioPlayer.play(UrlSource(sound.mp3Url));
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}
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}
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} catch (e) {
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debugPrint("Play Error: $e");
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}
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}
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Future<void> stop() async {
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await audioPlayer.stop();
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currentSoundNotifier.value = null;
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isPlayingNotifier.value = false;
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positionNotifier.value = Duration.zero;
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}
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}
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