how to update UI by using progressdialog from several instances of asynctask

Question

I have an activity with an inner (asynctask) class. I'm trying to create a progress dialog ,and in a "for" loop create several instances of my inner (asynctask) class. those instances supposed to update the message + progress of the progress dialog. I created the progress dialog inside the activity and showed it inside the asynctask->onProgressUpdate function.

however the progress dialog is not showing up.

Can anyone tell me if there's another way to update the UI ??

Answer 1

Run AsyncTask successively, one by one, and update your dialog on preExecute or postExecute . And write your for loop in doInBackground , where i is a indicator what task executed.