Too busy in background thread of AsyncTask

I make the background process of the AsyncTask too busy. In such case, the system is too busy to update UI, even cannot update the ProgressBar animation! http://android-er.blogspot.com/2016/03/too-busy-in-background-thread-of.html

Видео Too busy in background thread of AsyncTask автора Java: легко и понятно для начинающих