Call Event Listeners

The RC CallLib library provides the following callback methods for handling call-related business logic reporting.

Incoming Call Listener

• Sample code:

  /// Set incoming call callback
  engine?.onReceiveCall = (RCCallSession session) {
      /// session: call session object
  };

Outgoing Call Listener

• Sample code:

  /// Set outgoing call listener
  engine?.onCallDidMake = () {
  };

Call Established Listener

• Sample code:

  /// Set call established listener
  engine?.onConnect = () {
  };

Call Disconnection Listener

• Sample code:

  /// Set call disconnection listener
  engine?.onDisconnect = (RCCallDisconnectReason reason) {
      /// reason: disconnection reason
  };

Call Exception Listener

• Sample code:

  /// Set call exception listener
  engine?.onCallError = (int errorCode) {
      /// errorCode: error code
  };

Camera Operation Listener

• Sample code:

  /// Set camera operation listener
  engine?.onEnableCamera = (RCCallCamera camera, bool enable) {
      /// camera: current camera
      /// enable: activation status
  };

Camera Switch Listener

• Sample code:

  /// Set camera switch listener
  engine?.onSwitchCamera = (RCCallCamera camera) {
      /// camera: current camera
  };

Callee Ringing Listener

• Sample code:

  /// Set callee ringing listener
  engine?.onRemoteUserDidRing = (String userId) {
      /// userId: ringing user ID
  };

Microphone Operation Listener

• Sample code:

  /// Set microphone operation listener
  engine?.onRemoteUserDidChangeMicrophoneState = (RCCallUserProfile user, bool enable) {
      /// user: user who operated the microphone
      /// enable: microphone activation status
  };

Camera Operation Listener

• Sample code:

  /// Set camera operation listener
  engine?.onRemoteUserDidChangeCameraState = (RCCallUserProfile user, bool enable) {
      /// user: user who operated the camera
      /// enable: camera activation status
  };

Video-to-Audio Call Listener

Note

Switching from video call to audio-only call is also referred to as call downgrade.

• Sample code:

  /// Set call downgrade listener
  engine?.onRemoteUserDidChangeMediaType = (RCCallUserProfile user, RCCallMediaType mediaType) {
      /// user: user who triggered the downgrade
      /// mediaType: downgrade result
  };

Call Network Quality Listener

• Sample code:

  /// Set call network quality listener
  engine?.onNetworkQuality = (RCCallUserProfile user, RCCallNetworkQuality quality) {
      /// user: user information
      /// quality: network quality
  };

Call Volume Listener

• Sample code:

  /// Set call volume listener
  engine?.onAudioVolume = (RCCallUserProfile user, int volume) {
      /// user: user information
      /// volume: current volume level
  };