Question

In Android I am using a service to fetch data from a web service and update the sqlite database with the fetched data.

    class IncomingHandler extends Handler {
    @Override
    public void handleMessage(Message msg) {
        switch (msg.what) {
        case MSG_UPDATE_DATABASE:
            UpdateListThread thread = new UpdateListThread();
            thread.start();
            try {
                msg.replyTo.send(Message.obtain(null, MSG_UPDATE_DATABASE));
            } catch (RemoteException e) {
                // client is destroyed
            }
            break;
        default:
            super.handleMessage(msg);
        }
    }

However, If the web service returns an error, I want to throw an Exception and handle the Exception in the UI thread (which binds to this service), so I can print the Exception message on the screen.

Is this possible to do?

TIA,

Answer 1

The recommended method in this case is to use either Toast or Notification objects to notify user. As I understand your program’s logic correctly, you just need to pass Exception‘s message to one of cited object’s constructor and initiate it.