Monitor open channel events

Monitor mute, block, and multi-device join/leave events in open channels by registering an OpenChannelHandler.

Dart

NCEngine.addOpenChannelHandler('events-handler', OpenChannelHandler(
  onNotifyMultiLoginSync: (event) {
    // Multi-device join/leave sync
    print('Multi-device open channel sync: $event');
  },
  onMemberBanned: (event) {
    // Participant block/unblock events
    print('Member blocked: $event');
  },
  onMemberMuted: (event) {
    // Participant mute/unmute events
    print('Member muted: $event');
  },
));

Remove the handler when it is no longer needed:

Dart

NCEngine.removeOpenChannelHandler('events-handler');

Event callbacks

Callback	Trigger
onNotifyMultiLoginSync	User joins or leaves an open channel on another device
onMemberBanned	A participant is blocked or unblocked via the Server API
onMemberMuted	A participant is muted/unmuted, or the channel is frozen/unfrozen

ParticipantBlockEvent properties

Property	Type	Description
chatroomId	String?	Open channel ID
operateType	ParticipantOperateType?	Block/unblock operation type
durationTime	int?	Block duration (ms)
operateTime	int?	Operation timestamp (ms)
userIdList	List<String>?	Affected user IDs
extra	String?	Additional info

ParticipantBanEvent properties

Property	Type	Description
chatroomId	String?	Open channel ID
banType	ParticipantBanType?	Mute/unmute operation type
durationTime	int?	Mute duration (ms), max 43200 minutes
operateTime	int?	Operation timestamp (ms)
userIdList	List<String>?	Affected user IDs
extra	String?	Additional info