AsyncTask block UI thread and show progressbar with delay

Question

My AsyncTask is blocking block button element while downloading image and progress dialog is shown with delay - its shows for a while before image is shown, but downloading

Answer 1

It is because you are calling AsyncTask#get:

Waits if necessary for the computation to complete, and then retrieves its result.

You should perform whatever operation you need to use the image for within onPostExecute()