🐛 [firebase_messaging] custom sound not working for android or ios (old threads no help)

[emptyopen]

Bug report

I don't see any recent issues with sound, but mine is not working at all.

Steps to reproduce

new project, add firebase_messaging: ^11.2.4

construct request like:

 var request = {
      'notification': {
        'title': title,
        'color': '#E91E63',
        // 'sound': 'default',
        'sound': 'arpeggio.mp3',
      },
      'data': {'click_action': 'FLUTTER_NOTIFICATION_CLICK'},
      'registration_ids': to,
      'priority': 'high',
    };

send request to fcm. I get notifications successfully (well, only for debug on iOS - production isn't working but I'm going to open a separate ticket for that), but it is always the default sound for both Android and iOS.

I have arpeggio.mp3 in both the android/app/src/main/res/raw/arpeggio.mp3, and I also dragged the converted arpeggio.caf under "Runner" in XCode:

Expected behavior

Sound works for both Android and iOS.

Sample project

no public repo available

---

Additional context

iOS notifications are not working in production (downloaded from app store), doubt it would be related to the iOS sounds not working though.

---

Flutter doctor

Run flutter doctor and paste the output below:

Click To Expand

takaomatt@Matthews-MBP-2 signal % flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.5.3, on macOS 12.0.1 21A559 darwin-x64, locale en-US)
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    ✗ cmdline-tools component is missing
      Run `path/to/sdkmanager --install "cmdline-tools;latest"`
      See https://developer.android.com/studio/command-line for more details.
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/macos#android-setup for more details.
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 3.2)
[✓] VS Code (version 1.62.3)
[✓] Connected device (3 available)

! Doctor found issues in 1 category.

---

Flutter dependencies

Run flutter pub deps -- --style=compact and paste the output below:

Click To Expand

takaomatt@Matthews-MBP-2 signal % flutter pub deps -- --style=compact
Dart SDK 2.14.4
Flutter SDK 2.5.3
signal 1.0.4+5

dependencies:
- audioplayers 0.20.1 [uuid path_provider http flutter flutter_web_plugins]
- auto_size_text 2.1.0 [flutter]
- cupertino_icons 1.0.4
- firebase_core 1.10.2 [firebase_core_platform_interface firebase_core_web flutter meta]
- firebase_database 8.2.0 [firebase_core firebase_database_platform_interface firebase_database_web flutter]
- firebase_messaging 11.2.4 [firebase_core firebase_core_platform_interface firebase_messaging_platform_interface firebase_messaging_web flutter meta]
- flutter 0.0.0 [characters collection meta typed_data vector_math sky_engine]
- http 0.13.4 [async http_parser meta path]
- in_app_review 2.0.3 [flutter in_app_review_platform_interface]
- material_design_icons_flutter 4.0.5955 [flutter]
- shared_preferences 2.0.9 [flutter meta shared_preferences_android shared_preferences_ios shared_preferences_linux shared_preferences_macos shared_preferences_platform_interface shared_preferences_web shared_preferences_windows]

dev dependencies:
- flutter_launcher_icons 0.9.2 [args image path yaml]
- flutter_lints 1.0.4 [lints]
- flutter_test 0.0.0 [flutter test_api path fake_async clock stack_trace vector_math async boolean_selector characters charcode collection matcher meta source_span stream_channel string_scanner term_glyph typed_data]

transitive dependencies:
- archive 3.1.6 [crypto path]
- args 2.3.0
- async 2.8.1 [collection meta]
- boolean_selector 2.1.0 [source_span string_scanner]
- characters 1.1.0
- charcode 1.3.1
- clock 1.1.0
- collection 1.15.0
- crypto 3.0.1 [collection typed_data]
- fake_async 1.2.0 [clock collection]
- ffi 1.1.2
- file 6.1.2 [meta path]
- firebase_core_platform_interface 4.2.3 [collection flutter meta plugin_platform_interface]
- firebase_core_web 1.5.3 [firebase_core_platform_interface flutter flutter_web_plugins js meta]
- firebase_database_platform_interface 0.1.0+4 [collection firebase_core flutter meta plugin_platform_interface]
- firebase_database_web 0.1.2+1 [firebase_core firebase_core_web firebase_database_platform_interface flutter flutter_web_plugins js]
- firebase_messaging_platform_interface 3.1.4 [firebase_core flutter meta plugin_platform_interface]
- firebase_messaging_web 2.2.5 [firebase_core firebase_core_web firebase_messaging_platform_interface flutter flutter_web_plugins js meta]
- flutter_web_plugins 0.0.0 [flutter js characters collection meta typed_data vector_math]
- http_parser 4.0.0 [charcode collection source_span string_scanner typed_data]
- image 3.1.0 [archive meta xml]
- in_app_review_platform_interface 2.0.2 [flutter url_launcher plugin_platform_interface platform]
- js 0.6.3
- lints 1.0.1
- matcher 0.12.10 [stack_trace]
- meta 1.7.0
- path 1.8.0
- path_provider 2.0.8 [flutter path_provider_android path_provider_ios path_provider_linux path_provider_macos path_provider_platform_interface path_provider_windows]
- path_provider_android 2.0.9 [flutter path_provider_platform_interface]
- path_provider_ios 2.0.7 [flutter path_provider_platform_interface]
- path_provider_linux 2.1.2 [flutter path path_provider_platform_interface xdg_directories]
- path_provider_macos 2.0.3 [flutter]
- path_provider_platform_interface 2.0.0 [flutter meta platform plugin_platform_interface]
- path_provider_windows 2.0.4 [ffi flutter meta path path_provider_platform_interface win32]
- petitparser 4.4.0 [meta]
- platform 3.1.0
- plugin_platform_interface 2.0.2 [meta]
- process 4.2.4 [file path platform]
- shared_preferences_android 2.0.9 [flutter meta shared_preferences_platform_interface]
- shared_preferences_ios 2.0.8 [flutter meta shared_preferences_platform_interface]
- shared_preferences_linux 2.0.3 [file flutter meta path path_provider_linux shared_preferences_platform_interface]
- shared_preferences_macos 2.0.2 [flutter shared_preferences_platform_interface]
- shared_preferences_platform_interface 2.0.0 [flutter]
- shared_preferences_web 2.0.2 [flutter flutter_web_plugins meta shared_preferences_platform_interface]
- shared_preferences_windows 2.0.3 [file flutter meta path path_provider_platform_interface path_provider_windows shared_preferences_platform_interface]
- sky_engine 0.0.99
- source_span 1.8.1 [collection path term_glyph]
- stack_trace 1.10.0 [path]
- stream_channel 2.1.0 [async]
- string_scanner 1.1.0 [charcode source_span]
- term_glyph 1.2.0
- test_api 0.4.2 [async boolean_selector collection meta source_span stack_trace stream_channel string_scanner term_glyph matcher]
- typed_data 1.3.0 [collection]
- url_launcher 6.0.17 [flutter meta url_launcher_android url_launcher_ios url_launcher_linux url_launcher_macos url_launcher_platform_interface url_launcher_web url_launcher_windows]
- url_launcher_android 6.0.13 [flutter meta url_launcher_platform_interface]
- url_launcher_ios 6.0.13 [flutter meta url_launcher_platform_interface]
- url_launcher_linux 2.0.2 [flutter]
- url_launcher_macos 2.0.2 [flutter]
- url_launcher_platform_interface 2.0.4 [flutter plugin_platform_interface]
- url_launcher_web 2.0.5 [flutter flutter_web_plugins meta url_launcher_platform_interface]
- url_launcher_windows 2.0.2 [flutter]
- uuid 3.0.5 [crypto]
- vector_math 2.1.0
- win32 2.3.1 [ffi]
- xdg_directories 0.2.0 [meta path process]
- xml 5.3.1 [collection meta petitparser]
- yaml 3.1.0 [collection source_span string_scanner]

---

[darshankawar]

@emptyopen
I see there's a similar open issue describing your case, #4521
Please follow-up in it for further updates.
Closing this as a duplicate.