How to avoid running the same async task again until it got finished

Question

I have implement the pull to refresh functionality in my android app and i am using async task for fetching the data from server when user do pull to refresh, but sometimes if user do pull to refresh multiple times , it request the server multiple times so duplicate data comes . I want to avoid this situation, is there any way by which i can check if the async task is running than dont run the same task again until it finished.

This is my function in which i am calling async task

 public void refresh()
{

if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB && !mSharedPreferences.getString("SN","").equals("") )            
            new getfeeds(getSherlockActivity()).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (AppConstants.URL_FEED_MAIN+mSharedPreferences.getString("SN",null)+"/newer/0/"));
         else if( !mSharedPreferences.getString("SN","").equals("")  )
             new getfeeds(getSherlockActivity()).execute((AppConstants.URL_FEED_MAIN+mSharedPreferences.getString("SN","")+"/newer/0/"));       
 }

i want to put an condition in that if and elseif statement so it check some condition before starting getfeeds async task until previous getfeeds execution is finished

you can check status of your task, if it is not already running then you can execute it again... — Vikram Singh, Nov 28 '13 at 13:03
@GhostDerfel actually my asynctask resides in different class other than the main activity in which i am starting this task, so how do i access the boolean value to that different async task class. — Smogger, Nov 28 '13 at 13:10

How to avoid running the same async task again until it got finished

0 Answers0