connectOtherRoom() API in TRTCCloud will set up a video call between two anchors from different rooms. The caller will receive the onConnectOtherRoom() callback, which can be used to determine whether the cross-room call is successful. If it is successful, all users in both rooms will receive the onUserVideoAvailable() callback.userId of the anchor to compete withERR_NULL indicates a successful switch. For more information, please see Error Codes.
Listener type enumeration