Android : Progress Bar hangs during google maps loading

problem is next. I'm using google maps V2 in my app. On pre execute I'm doing next: setProgressBarIndeterminateVisibility(true); setProgressBarVisibility(true);

All the operation of calculation rout and etc. is in doInBackground.

On post execute just putting markers from local resources.

And the problem, that progress bar does not spinning. It hangs.

Can somebody help with it?