8000 windows-desktop_multi_window No implementation found for method initialize on channel FlutterWebRTC.Method · Issue #1811 · flutter-webrtc/flutter-webrtc · GitHub
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windows-desktop_multi_window No implementation found for method initialize on channel FlutterWebRTC.Method #1811

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yangkun19921001 opened this issue Apr 6, 2025 · 1 comment
Open

windows-desktop_multi_window No implementation found for method initialize on channel FlutterWebRTC.Method #1811

yangkun19921001 opened this issue Apr 6, 2025 · 1 comment

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@yangkun19921001
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yangkun19921001 commented Apr 6, 2025 •
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Describe the bug
When using desktop_multi_window to create child windows on Windows 11, invoking any flutter-webrtc methods (e.g., getUserMedia, RTCPeerConnection) in child windows consistently triggers the error:
MissingPluginException(No implementation found for method initialize on channel FlutterWebRTC.Method)
This occurs exclusively in child windows; the main window works normally despite identical plugin registration logic .

To Reproduce

  1. Initialize desktop_multi_window with explicit plugin registration for child windows:
// Windows platform code (C++)
DesktopMultiWindowSetWindowCreatedCallback([](void* controller) {
  auto* flutter_view_controller = 
      reinterpret_cast<flutter::FlutterViewController*>(controller);
  auto* registry = flutter_view_controller->engine();

  // Register WebRTC plugin for child window
  auto fp = registry->GetRegistrarForPlugin("FlutterWebRTCPlugin");
  FlutterWebRTCPluginRegisterWithRegistrar(fp); // From flutter_webrtc.h
});
  1. In the child window's Flutter UI, call a WebRTC method:
// Dart code in child window
    final rtcConfig = {
      'iceServers': [
        {'urls': 'stun:stun.l.google.com:19302'},
      ],
    };

    // create PeerConnection
    final peerConnection = await rtc.createPeerConnection(rtcConfig);
  1. Observe the MissingPluginException immediately upon method invocation.

Expected behavior
The WebRTC plugin should function in child windows after explicit registration via FlutterWebRTCPluginRegisterWithRegistrar, as it does in the main window .

Platform information

  • Flutter version:

       Flutter 3.29.0 • channel stable •
   https://github.com/flutter/flutter.git
   Framework • revision 35c388afb5 (8 weeks ago) • 2025-02-10 12:48:41
   -0800
   Engine • revision f73bfc4522
  Tools • Dart 3.7.0 • DevTools 2.42.2

  • Plugin version:

    • desktop_multi_window: ^0.2.1
    • flutter_webrtc: ^0.13.1

  • OS: Windows 11 21H2 22000.2538

  • Additional context:

    • Plugin registration succeeds in the main window.
    • No issues with other plugins (e.g., path_provider) in child windows.
    • Multi-window plugin registration works correctly on macOS but fails on Windows.
@lsq286224380
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遇到了相同的问题，希望有解决方法

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