Android ListView updating of Image Thumbnails using AsyncTask Causes View recycling

Question

I have been trying to get thumbnails to work with an AsyncTask for image files in a ListView. I have been having the common problem of Row Recycling, and thus on scrolling t

Answer 1

Using the AsyncTask.THREAD_POOL_EXECUTOR wil end up running multiple threads to fetch the thumnails. There is no order in the way they run or finisch and set the image for the view. When scrolling back and forth you may end up with the wrong images in your views.

I tested the AsyncTask.THREAD_POOL_EXECUTOR and it does lead to the wrong image for some views.