AgoraVideoViewController.swift

@IBAction func didTapX(_ sender: Any) {
    if inCall {
        if (isLocalCall) {
            //Toggle lock on the room
            callLocked = !callLocked
            if (callLocked) {
                userRef.child("\(currentUser!.uid)/locked").setValue("true")
            } else {
                userRef.child("\(currentUser!.uid)/locked").setValue("false")
            }
        } else {
            leaveChannel()
            if let user = currentUser {
                joinChannel(channelName: user.uid)
            }
        }
    }
}