parallel execution of AsyncTask

Question

An AsyncTask is executed on click:

List list = new Vector();
private OnClickListener click = new OnClickL         


        

Answer 1

You can store reference to AsyncTask in member variable. So your code would look like this:

List list = new Vector();
DownloadFilesTask downloadTask = null;

private OnClickListener click = new OnClickListener() {
    public void onClick(View view) {
        list.clear();
        if((dft.getStatus().toString()).equals("RUNNING")) dft.cancel(true);
        currentCategory = catigoriesHolder.indexOfChild(view);

        if(downloadTask == null){
           downloadTask = new DownloadFilesTask();
           downloadTask.execute(rssFeedURL[currentCategory]);
        } else { 
           //show warning here
        }
    }
}

Of course, you'll need to set downloadTask to null in onPostExecute() for this to work.

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As an added benefit you now can cancel outstanding task if Activity is being destroyed:

 @Override
 onDestroy() {
     if(downloadTask != null) {
         downloadTask.cancel();
     }
 }

Which you should do anyway.