SendMessageSafeAsyncTask.java

public class SendMessageTask extends SafeAsyncTask<Boolean> {
    private final HttpClient httpClient;
    private final sendMessageCallbacks sendMessageCallbacks;

    @Inject
    public SendMessageTask(org.apache.http.client.HttpClient httpClient,
                          @Assisted SendMessageCallbacks sendMessageCallbacks {
        this.httpClient = httpClient;
        this.sendMessageCallbacks = sendMessageCallbacks;
    }

    @Override
    public Boolean call() throws Exception {
        // make network call
        // return true or false based on whether it was successful
        // You could also make an object that wraps the response code or something
        return true;
    }

    @Override
    protected void onException(Exception e) {
        LOG.error("Error when ending session", e);
        sendMessageCallbacks.onMessageSendingFailed("Exception occured: " + e.toString());
    }

    @Override
    protected void onSuccess(Boolean wasSuccessful) {
        if(wasSuccessful){
            sendMessageCallbacks.onMessageSendingSuccess("Message sending successful") :
        }else{
            sendMessageCallbacks.onMessageSendingFailed("Message sending failed");
        }
    }
}