Question

I want to implement such a task: in the background (when app is in the background) look for new data for the user and give notifications about it. I have to do this periodically (every 2-3 seconds).There is different data so I use different methods for this (FetchImages ,FetchMessages, FetchNewConversations , etc.)As far as I know in Android 4 all network operations must be implemented in the backgroun thread, so I implement all this operations as classes inherited from AsyncTask and then to call them I just write FetchImages.execute () But activities execute only once so I decided to call them via ScheduledExecutorService like this:

.scheduleAtFixedRate(new Runnable() {
  public void run() 
   {
  FetchImages.execute(); //...
    }

So the question is it a good idea or there exeist better and more efficient solution? Thanks in advance!

Answer 1

Since ScheduledExecutorService already uses a background thread, you do not need to add another background thread via AsyncTask. In fact, your code should crash, as you can only create an AsyncTask on the main application thread.