load data into an array using for loop android

Question

I am trying to populate an array of image urls from Post class but the activity returns a blanked page. am i doing it right. sorry am learning android don't know much.

ArrayList PostDetails = new ArrayList();

    for (int index=0;index<imageUrls.length;index++){
        imageUrls[index]=PostDetails.get(index).getImag();
    }

Answer 1

You should wait till the task is completed, you can put the last part in onPostExecute method..

protected void onPostExecute( ) {
    String[]imageUrls= new String[PostDetails.size()];

   for (int index=0;index<imageUrls.length;index++){
       imageUrls[index]=PostDetails.get(index).getImag();
   }
}