Skip to main content
View screen shares from other participants during a call. The Flutter SDK can receive and display screen shares initiated from web clients.
The Flutter Calls SDK does not support initiating screen sharing. Screen sharing can only be started from web clients. Flutter participants can view shared screens.

​
How It Works

When a web participant starts screen sharing:
  1. The SDK receives the screen share stream
  2. The call layout automatically adjusts to display the shared screen prominently
  3. Flutter participants can view the shared content

​
Listen for Screen Share Events

Monitor when participants start or stop screen sharing: 
CallSession? callSession = CallSession.getInstance();

callSession?.addParticipantEventListener(ParticipantEventListener(
  onParticipantStartedScreenShare: (Participant participant) {
    debugPrint("${participant.name} started screen sharing");
    // Layout automatically adjusts to show shared screen
  },
  onParticipantStoppedScreenShare: (Participant participant) {
    debugPrint("${participant.name} stopped screen sharing");
    // Layout returns to normal view
  },
  // Other callbacks...
  onParticipantJoined: (Participant participant) {},
  onParticipantLeft: (Participant participant) {},
  onParticipantListChanged: (List<Participant> participants) {},
  onParticipantAudioMuted: (Participant participant) {},
  onParticipantAudioUnmuted: (Participant participant) {},
  onParticipantVideoPaused: (Participant participant) {},
  onParticipantVideoResumed: (Participant participant) {},
  onParticipantStartedRecording: (Participant participant) {},
  onParticipantStoppedRecording: (Participant participant) {},
  onParticipantHandRaised: (Participant participant) {},
  onParticipantHandLowered: (Participant participant) {},
  onDominantSpeakerChanged: (Participant participant) {},
));
Flutter listeners are not lifecycle-aware. You must manually remove listeners in your widget’s dispose() method to prevent memory leaks.

​
Check Screen Share Status

Use the isPresenting property on the Participant object to check if someone is sharing their screen: 
CallSession? callSession = CallSession.getInstance();

callSession?.addParticipantEventListener(ParticipantEventListener(
  onParticipantListChanged: (List<Participant> participants) {
    final presenter = participants.where((p) => p.isPresenting).firstOrNull;
    if (presenter != null) {
      debugPrint("${presenter.name} is currently sharing their screen");
    }
  },
));