Just_audio: Can't load audio file from assets folder

[Alphabets007]

Which API doesn't behave as documented, and how does it misbehave?

Can't load audio file from assets folder.

Version : just_audio: ^0.3.1

AudioPlayer audioPlayer = AudioPlayer();
await audioPlayer.setAsset("assets/sounds/forest_birds.ogg");
await audioPlayer.play();

Minimal reproduction project
you can reproduce it with the simple project with below code snippet.

AudioPlayer audioPlayer = AudioPlayer();
await audioPlayer.setAsset("assets/sounds/forest_birds.ogg");
await audioPlayer.play();

To Reproduce
Steps to reproduce the behaviour:
-> Run above code snippet with example project

Error messages

2020-08-11 19:49:11.972 13781-13864/com.example.flutter_app E/flutter: [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: Unable to load asset: /sounds/forest_birds.ogg
    #0      PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:221:7)
    <asynchronous suspension>
    #1      UriAudioSource._loadAsset (package:just_audio/just_audio.dart:1050:29)
    <asynchronous suspension>
    #2      UriAudioSource._setup (package:just_audio/just_audio.dart:1030:38)
    <asynchronous suspension>
    #3      AudioPlayer._load (package:just_audio/just_audio.dart:405:20)
    #4      AudioPlayer.load (package:just_audio/just_audio.dart:381:30)
    #5      AudioPlayer.setAsset (package:just_audio/just_audio.dart:368:7)
    #6      SoundRepo.addSoundToQueue (package:flutter_app/repository/soundrepo.dart:39:23)
    #7      CubitSound.addSoundToQueue (package:flutter_app/bloc/cubit_sound.dart:16:17)
    #8      _HomeState.onSoundSelected (package:flutter_app/ui/home.dart:42:33)
    #9      _HomeState.build.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter_app/ui/home.dart:115:33)
    #10     GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
    #11     TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:504:11)
    #12     BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:282:5)
    #13     BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:254:7)
    #14     GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
    #15     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:222:20)
    #16     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
    #17     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
    #18     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
    #19     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
    #20     _rootRunUnary (dart:async/zone.dart:1196:13)
    #21     _CustomZone.runUnary (dart:async/zone.dart:1085:19)
    #22     _CustomZone.runUnaryGuarded (dart:async/zone.dart:987:7)
    #23     _invoke1 (dart:ui/hooks.dart:275:10)
    #24     _dispatchPointerDataPacket (dart:ui/hooks.dart:184:5)

Expected behavior
Should load audio file from assets

Smartphone (please complete the following information):

• Device: POCO F1
• OS: Android 10

Flutter SDK version

[√] Flutter (Channel stable, v1.17.5, on Microsoft Windows [Version 10.0.18362.959], locale en-US)
    • Flutter version 1.17.5 at F:\temp\flutter
    • Framework revision 8af6b2f038 (6 weeks ago), 2020-06-30 12:53:55 -0700
    • Engine revision ee76268252
    • Dart version 2.8.4

[ryanheise]

It appears that you deleted some important sections from your bug report (as per the instructions, please don't delete these, they are required.)

[derToralf]

I have the same problem. In _loadAsset the parameter assetPath always starts with a leading slash and rootbundle.load does not like a leading slash (maybe a absolute/relative path problem).

Furthermore, there is a problem in AudioPlayer.setAsset

1. player.setAsset("sounds/background.mp3"); tries to load "background.mp3", not "sounds/background.mp3".

2. player.setAsset("/sounds/background.mp3"); tries to load "/sounds/background.mp3", which is not accessible by rootbundle.load.

If i modify your source and strip the leading slash before rootbundle.load, at least "/sounds/background.mp3" works, but this is not the regular flutter asset style.

Sorry if i missed the guideline, but this is my first contribution.

[ryanheise]

Hi @derToralf if you can post your own "complete" bug report and I will act on it quickly.

[Alphabets007]

Hi @derToralf if you can post your own "complete" bug report and I will act on it quickly.

I have updated complete information and bug report i had.

[ryanheise]

@Alphabets007 can you please fill in the deleted section "Minimal Reproduction Project"? This is the main thing that I need before I can take time off the other bugs I'm fixing and turn my attention to this one. Thanks.

[ryanheise]

@Alphabets007 a code snippet is not a minimal reproduction project.

[ryanheise]

I'll close this (regretfully) as an invalid bug report. Hopefully someone will post a valid bug report, and once that happens, I will be happy to act on it promptly (provided I am not sleeping at that time). But right now, I am going to work on fixing other bugs. As they say, please help me help you.

[suragch]

This can happen if you spell the path wrong or if you don't declare your assets in pubspec.yaml.

https://stackoverflow.com/a/67209597/3681880