onInit method
Called immediately after the widget is allocated in memory. You might use this to initialize something for the controller.
Implementation
@override
void onInit() {
super.onInit();
counter++;
_dateString = DateTime.now().millisecondsSinceEpoch.toString();
_uiMessageListener = "${_dateString}UI_message_listener";
_uiGroupListener = "${_dateString}UI_group_listener";
CometChatMessageEvents.addMessagesListener(_uiMessageListener, this);
CometChatGroupEvents.addGroupsListener(_uiGroupListener, this);
}