Possible NullPointerException

[spike-commander]

Possible NullPointerException (Most serious bug) in the file Chat activity.Java

In:

void sendMessageToUser(String message){
    chatroomModel.setLastMessageTimestamp(Timestamp.now());

chatroomModel might be null because:

getOrCreateChatroomModel() runs asynchronously

User may click send before Firebase finishes loading

Fix

Add a null check:

if(chatroomModel == null){
    Log.e("ChatActivity","Chatroom not initialized yet");
    return;
}

OR disable send button until chatroom loads.

Hope this small contribution may help in creating an amazing application 🤩
Thanku