Flutter - 音频播放器错误：未处理的异常：无法加载资产：然后是“<异步暂停>”

Question

我正在尝试制作一些在单击时会发出声音的按钮，我确实删除了软件包并安装了另一个，尝试了flutter clean，重新启动了工作室很多次，但似乎什么也没发生，它一直给我错误：[错误：flutter/lib/ui/ui_dart_state.cc(186)] 未处理的异常：无法加载资产：资产/音频文件夹/assets_note4.wav E/flutter (8639):#0 PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:227:7) E/颤动​​（8639）： E/flutter（8639）：#1 AudioCache._fetchAsset（包：audioplayers/audio_cache.dart:75:12） E/颤动​​（8639）： E/flutter (8639):#2 AudioCache.fetchToMemory (package:audioplayers/audio_cache.dart:82:24) E/颤动​​（8639）： E/flutter（8639）：#3 AudioCache.load（包：audioplayers/audio_cache.dart:97:31） E/颤动​​（8639）： E/flutter (8639):#4 AudioCache.getAbsoluteUrl (package:audioplayers/audio_cache.dart:192:17) E/颤动​​（8639）： E/flutter (8639):#5 AudioCache.play (package:audioplayers/audio_cache.dart:122:18) E/颤动​​（8639）： E/flutter (8639)：每当我点击一个按钮时

import 'package:audioplayers/audio_cache.dart';

void main() => runApp(MaterialApp(
      home: Home(),
    ));

class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  void playLocalAsset(int x) {
    final player = AudioCache();
    player.play('audiofolder/assets_note$x.wav'); // error that i can't solve
  }

  Expanded buttonKey({Color color, int number}) {
    return Expanded(
      child: FlatButton(
        color: color,
        onPressed: () {
          playLocalAsset(number);
        },
      ),
    );
  }

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

这是pubspec.yaml 文件：

description: A new Flutter application.

publish_to: 'none' 
version: 1.0.0+1

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^1.0.2
  audioplayers: ^0.18.3


dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:

  uses-material-design: true
  assets:
    - audiofolder/
 

Answer 1

如果audiofolder 不在assets or another folder 中，则只需输入filename。

例如这是我的代码

 return AudioCache().play('audios/zapsplat_multimedia_game_sound_basic_digital_retro_incorrect_error_negative_005_40466.mp3');

这是pubspec.yaml

assets:
- assets/

在我的情况下，assets/audios 中的音​​频文件因此您必须在没有 assets/ 的情况下输入，因为资产已在 pubspec.yaml 中初始化

希望能帮到你