Question

I am learning Android via a book and would just like to confirm something.

When using AsyncTask according to the book it goes something like this:

main class
{
 new AddStringTask().execute(); 
  } 

  class AddStringTask extends AsyncTask<Void, String, Void> { 
@Override 
protected Void doInBackground(Void... unused) { 
  // Do something
    SystemClock.sleep(333);
      return(something); 
    } 
 @Override 
    protected void onProgressUpdate(String... item) { 
        // update something

} 
      } 

which creates one background thread to do some stuff.
So if I want more threads, for example firing at different times (300, 500, 1000 milliseconds) then I need
to make even more sub classes… true?

Or is there some way to do multiple threads firing at different times using just this one subclass?

Thanks!

Answer 1

then I need to make even more sub classes… true?

Not true.

You can just execute the same AsyncTask again by creating a new AddStringTask() instance. This works since it’ll be a new instance which differs from the other ones and each instance has its own thread. They are not interdependent.

However, the timer mechanism is something you have to implement yourself.