🐛 [firebase_messaging] onIosSettingsRegistered stream is not updated

[verscph]

Bug report

Describe the bug
onIosSettingsRegistered stream is not updated when notification settings are changed on iOS.

Steps to reproduce

Steps to reproduce the behavior:

1. Initialize push notification support

Future initialize() async {
    if (Platform.isIOS) {
      iosSubscription = _fcm.onIosSettingsRegistered.listen((data) async {
        print('Settings: $data');
      });
      _fcm.requestNotificationPermissions(IosNotificationSettings());
    }

    _fcm.configure(
      onMessage: (Map<String, dynamic> message) async {
        print('onMessage $message');
        await _dialogService.showDialog(
          title: 'Notification',
          description: message.toString(),
        );
      },
      onLaunch: (Map<String, dynamic> message) async {
        print('onLaunch $message');
      },
      onResume: (Map<String, dynamic> message) async {
        print('onResume $message');
      },
    );
  }

2. Launch the app
3. Click "Allow" to allow push notifications
   Console output:
   flutter: Settings: PushNotificationSettings {sound: true, alert: true, badge: true, provisional: false}
4. Go to settings and disable notifications
5. _fcm.onIosSettingsRegistered stream is not updated
   Console output:
   

Expected behavior

Stream should be updated with new notification settings.

Console output:

flutter: Settings: PushNotificationSettings {sound: false, alert: false, badge: false, provisional: false}

---

Additional context

Add any other context about the problem here.

---

Flutter doctor

Run flutter doctor and paste the output below:

Click To Expand

[✓] Flutter (Channel dev, 1.21.0-9.0.pre, on Mac OS X 10.15.6 19G2021, locale en-GB)
    • Flutter version 1.21.0-9.0.pre at /Users/philip.verschueren/Projects/flutter
    • Framework revision 7c6f9dd239 (4 weeks ago), 2020-08-09 10:31:03 -0400
    • Engine revision 6d86e67f04
    • Dart version 2.10.0 (build 2.10.0-4.0.dev 0341576448)

 
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/philip.verschueren/Library/Android/sdk
    • Platform android-29, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.7)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.7, Build version 11E801a
    • CocoaPods version 1.9.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 48.1.2
    • Dart plugin version 193.7361
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] Connected device (4 available)
    • Phil's iPhone (mobile) • 00008030-0006215601D2802E            • ios            • iOS 13.6.1
    • iPhone 11 Pro (mobile) • CB5E178B-C2F6-4E9E-9370-6B5426697F5A • ios            • com.apple.CoreSimulator.SimRuntime.iOS-13-7 (simulator)
    • Web Server (web)       • web-server                           • web-javascript • Flutter Tools
    • Chrome (web)           • chrome                               • web-javascript • Google Chrome 85.0.4183.83

• No issues found!

---

Flutter dependencies

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

Click To Expand

Dart SDK 2.10.0-4.0.dev.flutter-0341576448
Flutter SDK 1.21.0-9.0.pre
futech_app 1.0.0+5

dependencies:
- async 2.5.0-nullsafety [collection]
- charts_flutter 0.9.0 [charts_common collection flutter intl logging meta]
- cloud_firestore 0.14.0+2 [flutter meta quiver firebase_core firebase_core_platform_interface cloud_firestore_platform_interface cloud_firestore_web]
- connectivity 0.4.9+2 [flutter meta connectivity_platform_interface connectivity_macos connectivity_for_web]
- cupertino_icons 0.1.3
- date_util 0.1.4
- email_validator 1.0.5
- firebase_auth 0.18.0+1 [meta firebase_core firebase_core_platform_interface firebase_auth_platform_interface firebase_auth_web flutter]
- firebase_core 0.5.0 [firebase_core_platform_interface flutter quiver meta firebase_core_web]
- firebase_messaging 7.0.0 [meta platform flutter firebase_core]
- flutter 0.0.0 [characters collection meta typed_data vector_math sky_engine]
- flutter_localizations 0.0.0 [flutter intl characters collection meta path typed_data vector_math]
- get_it 4.0.4 [async meta]
- grouped_list 1.3.1 [flutter]
- intl 0.16.1 [path]
- provider 4.3.2 [flutter nested collection]
- stacked 1.7.6 [flutter provider observable_ish]

dev dependencies:
- 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]
- intl_translation 0.17.10+1 [analyzer args dart_style intl path petitparser]

transitive dependencies:
- _fe_analyzer_shared 7.0.0 [meta]
- analyzer 0.39.17 [_fe_analyzer_shared args charcode cli_util collection convert crypto glob html meta package_config path pub_semver source_span watcher yaml]
- args 1.6.0
- boolean_selector 2.1.0-nullsafety [source_span string_scanner]
- characters 1.1.0-nullsafety.2
- charcode 1.2.0-nullsafety
- charts_common 0.9.0 [collection intl logging meta vector_math]
- cli_util 0.2.0 [path]
- clock 1.1.0-nullsafety
- cloud_firestore_platform_interface 2.0.1 [flutter meta collection firebase_core plugin_platform_interface]
- cloud_firestore_web 0.2.0+1 [flutter flutter_web_plugins firebase http_parser meta firebase_core cloud_firestore_platform_interface js]
- collection 1.15.0-nullsafety.2
- connectivity_for_web 0.3.1+2 [connectivity_platform_interface flutter_web_plugins flutter]
- connectivity_macos 0.1.0+4 [flutter]
- connectivity_platform_interface 1.0.6 [flutter meta plugin_platform_interface]
- convert 2.1.1 [charcode typed_data]
- crypto 2.1.5 [collection convert typed_data]
- csslib 0.16.2 [source_span]
- dart_style 1.3.6 [analyzer args path source_span]
- fake_async 1.1.0-nullsafety [clock collection]
- firebase 7.3.0 [http http_parser js]
- firebase_auth_platform_interface 2.0.1 [flutter meta firebase_core plugin_platform_interface]
- firebase_auth_web 0.3.0+1 [flutter flutter_web_plugins firebase meta http_parser intl firebase_core firebase_auth_platform_interface js]
- firebase_core_platform_interface 2.0.0 [flutter meta plugin_platform_interface quiver]
- firebase_core_web 0.2.0 [firebase firebase_core_platform_interface flutter flutter_web_plugins meta js]
- flutter_web_plugins 0.0.0 [flutter characters collection meta typed_data vector_math]
- glob 1.2.0 [async collection node_io path pedantic string_scanner]
- html 0.14.0+3 [csslib source_span]
- http 0.12.2 [http_parser path pedantic]
- http_parser 3.1.4 [charcode collection source_span string_scanner typed_data]
- js 0.6.2
- logging 0.11.4
- matcher 0.12.10-nullsafety [stack_trace]
- meta 1.3.0-nullsafety.2
- nested 0.0.4 [flutter]
- node_interop 1.1.1 [js]
- node_io 1.1.1 [node_interop path]
- observable_ish 2.1.4 [collection]
- package_config 1.9.3 [path charcode]
- path 1.8.0-nullsafety
- pedantic 1.9.2 [meta]
- petitparser 3.1.0 [meta]
- platform 2.2.1
- plugin_platform_interface 1.0.2 [meta]
- pub_semver 1.4.4 [collection]
- quiver 2.1.3 [matcher meta]
- sky_engine 0.0.99
- source_span 1.8.0-nullsafety [charcode collection path term_glyph]
- stack_trace 1.10.0-nullsafety [path]
- stream_channel 2.1.0-nullsafety [async]
- string_scanner 1.1.0-nullsafety [charcode source_span]
- term_glyph 1.2.0-nullsafety
- test_api 0.2.19-nullsafety [async boolean_selector collection meta path source_span stack_trace stream_channel string_scanner term_glyph matcher]
- typed_data 1.3.0-nullsafety.2 [collection]
- vector_math 2.1.0-nullsafety.2
- watcher 0.9.7+15 [async path pedantic]
- yaml 2.2.1 [charcode collection string_scanner source_span]

---

[TahaTesser]

I can reproduce the issue on 6.0.16 and 7.0.0 as well

This is only called once and isn't updated when changing settings

flutter: Settings registered: PushNotificationSettings {sound: false, alert: false, badge: false, provisional: false}

flutter doctor -v

[✓] Flutter (Channel dev, 1.22.0-9.0.pre, on Mac OS X 10.15.6 19G2021, locale
    en-GB)
    • Flutter version 1.22.0-9.0.pre at /Users/tahatesser/Code/flutter_dev
    • Framework revision 7a43175198 (10 days ago), 2020-08-28 23:18:04 -0400
    • Engine revision 07e2520d5d
    • Dart version 2.10.0 (build 2.10.0-73.0.dev)

 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at /Users/tahatesser/Code/sdk
    • Platform android-30, build-tools 30.0.2
    • ANDROID_HOME = /Users/tahatesser/Code/sdk
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.7)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.7, Build version 11E801a
    • CocoaPods version 1.9.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 49.0.2
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.48.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.14.1

[✓] Connected device (4 available)
    • Taha’s iPhone (mobile) • 00008020-001059882212002E            • ios
      • iOS 13.7
    • iPhone 11 (mobile)     • 73130414-6DF8-4E37-B9AF-F81FA0F9068B • ios
      • com.apple.CoreSimulator.SimRuntime.iOS-13-7 (simulator)
    • Web Server (web)       • web-server                           •
      web-javascript • Flutter Tools
    • Chrome (web)           • chrome                               •
      web-javascript • Google Chrome 85.0.4183.83

• No issues found!

[verscph]

Any updates on this?