SoundStreamPlugin on iOS 15 crashes

[stijnie2210]

Situation

Recording doesn't start when calling when calling recorderStream.start()
when pausing the recorderstream and resuming it, it crashes the application with the following logs appearing:

sound_stream/SwiftSoundStreamPlugin.swift:199: Fatal error: Unexpectedly found nil while unwrapping an Optional value
* thread #1, queue = 'com.apple.main-thread', stop reason = Fatal error: Unexpectedly found nil while unwrapping an Optional value
    frame #0: 0x0000000186755cf4 libswiftCore.dylib`_swift_runtime_on_report
libswiftCore.dylib`_swift_runtime_on_report:
->  0x186755cf4 <+0>: ret
libswiftCore.dylib`_swift_reportToDebugger:
    0x186755cf8 <+0>: b      0x186755cf4               ; _swift_runtime_on_report
libswiftCore.dylib`_swift_shouldReportFatalErrorsToDebugger:
    0x186755cfc <+0>: adrp   x8, 335268
    0x186755d00 <+4>: ldrb   w0, [x8, #0x874]

[stijnie2210]

I solved it, the package itself asks for microphone permission, but if you use permission_handler by baseflow it still says permanentlyDenied. You need to specifically add this in your Podfile:

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      flutter_additional_ios_build_settings(target)

      # You can enable the permissions needed here. For example to enable camera
      # permission, just remove the `#` character in front so it looks like this:
      #
      # ## dart: PermissionGroup.camera
      # 'PERMISSION_CAMERA=1'
      #
      #  Preprocessor definitions can be found in: https://github.com/Baseflow/flutter-permission-handler/blob/master/permission_handler/ios/Classes/PermissionHandlerEnums.h
      config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
        '$(inherited)',
        ## dart: PermissionGroup.microphone
        'PERMISSION_MICROPHONE=1',
      ]

    end
  end
end

Adding this resolved my issue.

[Zeehshan]

I am facing same issue, i can see permission granted