Windows MissingPluginException on speak, setSpeechRate, awaitSpeakCompletion

[shirsho-12]

🐛 Bug Report

I had to recently switch from a web app to a Windows app. FlutterTts no longer works as all actions are throwing MissingPluginExceptions.

This is the widget that I am using.

class AudioCue extends StatefulWidget {
  const AudioCue({required this.text, Key? key}) : super(key: key);
  final String text;

  @override
  State<AudioCue> createState() => _AudioCueState();
}

class _AudioCueState extends State<AudioCue> {
  FlutterTts flutterTts = FlutterTts();

  @override
  void initState() {
    super.initState();
    _setAwaitOptions();
  }

  Future _setAwaitOptions() async {
    await flutterTts.awaitSpeakCompletion(true);
  }

  void _speak(String text) async {
    try {
      devtools.log(text);
      await flutterTts.speak(text);
    } catch (e) {
      devtools.log(e.toString());
    }
  }

  void _slowSpeak(String text) async {
    flutterTts.setSpeechRate(0.1);
    try {
      await flutterTts.speak(text);
    } catch (e) {
      // print(e);
    }
    flutterTts.setSpeechRate(0.5);
    // if (result == 1) setState(() => ttsState = TtsState.playing);
  }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.only(left: 8.0),
      child: InkWell(
        onTap: () => _speak(widget.text),
        onDoubleTap: () => _slowSpeak(widget.text),
        child: const Icon(
          Icons.volume_up,
          size: 40.0,
        ),
      ),
    );
  }
}

Expected behavior

It should speak on tap and speak at a slower speed on double-tap. It worked properly for Flutter Web but has broken down for Flutter Windows.

Configuration

Flutter 3.0.3 • channel stable • https://github.com/flutter/flutter.git Framework • revision 676cefaaff (9 days ago) • 2022-06-22 11:34:49 -0700 Engine • revision ffe7b86a1e Tools • Dart 2.17.5 • DevTools 2.12.2 Version: flutter_tts: ^3.3.3 As for the reference to issue #321, I have both C++ ATL for latest v142 build tools and v143 installed.
Doctor summary (to see all details, run flutter doctor -v): [√] Flutter (Channel stable, 3.0.3, on Microsoft Windows [Version 10.0.19044.1766], locale en-US) [√] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1) [√] Chrome - develop for the web [√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.2.5) [√] Android Studio (version 2021.1) [√] IntelliJ IDEA Ultimate Edition (version 2021.3) [√] VS Code (version 1.68.1) [√] Connected device (3 available) [√] HTTP Host Availability

Platform:

• [ ] 🪟 Windows Desktop

[vagoston]

@shirsho-12 Which plugins are missing? Could you copy the error messages?