我正在使用audioplayers包向我的应用添加声音，但在最初的构建中没有声音播放。在加载文件时重新启动面团后，出现此异常：
E/flutter (32175): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: Unable to load asset: assets/assets/click.mp3
E/flutter (32175): #0 PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:221:7)
E/flutter (32175): <asynchronous suspension>
E/flutter (32175): #1 AudioCache._fetchAsset (package:audioplayers/audio_cache.dart:60:29)
E/flutter (32175): #2 AudioCache.fetchToMemory (package:audioplayers/audio_cache.dart:67:30)
E/flutter (32175): <asynchronous suspension>
E/flutter (32175): #3 AudioCache.load (package:audioplayers/audio_cache.dart:82:37)
E/flutter (32175): #4 AudioCache.getAbsoluteUrl (package:audioplayers/audio_cache.dart:140:23)
E/flutter (32175): #5 AudioCache.play (package:audioplayers/audio_cache.dart:103:24)
E/flutter (32175): #6 _MapScreenState.build.<anonymous closure> (package:fixit_cloud_biking/Screens/map_screen.dart:1239:46)
E/flutter (32175): #7 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:706:14)
E/flutter (32175): #8 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:789:36)
E/flutter (32175): #9 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
E/flutter (32175): #10 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:486:11)
E/flutter (32175): #11 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:264:5)
E/flutter (32175): #12 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:199:7)
E/flutter (32175): #13 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:467:9)
E/flutter (32175): #14 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:76:12)
E/flutter (32175): #15 PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:117:9)
E/flutter (32175): #16 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:379:8)
E/flutter (32175): #17 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:115:18)
E/flutter (32175): #18 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:101:7)
E/flutter (32175): #19 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:218:19)
E/flutter (32175): #20 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
E/flutter (32175): #21 GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
E/flutter (32175): #22 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
E/flutter (32175): #23 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
E/flutter (32175): #24 _rootRunUnary (dart:async/zone.dart:1138:13)
E/flutter (32175): #25 _CustomZone.runUnary (dart:async/zone.dart:1031:19)
E/flutter (32175): #26 _CustomZone.runUnaryGuarded (dart:async/zone.dart:933:7)
E/flutter (32175): #27 _invoke1 (dart:ui/hooks.dart:273:10)
E/flutter (32175): #28 _dispatchPointerDataPacket (dart:ui/hooks.dart:182:5)
E/flutter (32175):
我确实将文件放在了包含我用于图标的所有图像的相同资源文件夹中，因此pubspec.yaml文件中的缩进是正确的。问题不应该是文件命名，无论是我使用驼峰大小写还是单个单词命名（从使用空空格命名的图像中汲取的教训..）。值得一提的是，如果我将文件拖放到assets文件夹中，则会出现错误。我尝试删除该文件夹，然后重新创建它，然后进行拖放操作，但是第二次添加仅一次..文件会引发错误。这是应该播放声音的按钮：
IconButton(
icon: Image.asset('assets/centerMapButton.png'),
iconSize: 60,
onPressed: () async {
await widget.cache.play('assets/click.mp3',
volume: 50, mode: PlayerMode.MEDIA_PLAYER);
print('Center map button pressed');
_mapController.move(userLocation, 16);
}),
[AudioCache()被声明为AudioCache cache = new AudioCache();。
请尝试更改此资产/click.mp3至click.mp3
我在忽略路径中的“ assets /”时也遇到了同样的错误，这使得它可以无缝地播放本地声音。音频播放器假定其默认路径为asset /