Android Service and UI Thread

Question

I have a Service running in my app..

This Service has an object for sending message to the server and a function to get that object and use it.

The object is

Answer 1

Use IntentService instead of Service. If you do network calls in a Service, the UI will stuck. Therefore, use an IntentService since it uses a separate Thread.

And you do not know when a server message will retrieve the data. A NullPointerException could be thrown if objects are accessed as long as network calls are still in progress. Use BroadcastReceivers to fire an Intent whenever a server responds.