running parallel AsyncTask

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There has been a change in AsyncTask from Honeycomb release. Older versions had a Thread pool of 10 threads, so you could run 10 tasks in parallel. But for Honeycomb and up, default is a serial executor, which executes tasks one by one. But you can pass a ThreadPoolExecutor for execution:

   if (Build.VERSION.SDK_INT >= 11) {
     //--post GB use serial executor by default --
     task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
   } else {
     //--GB uses ThreadPoolExecutor by default--
     task.execute();
   }

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