android determine if activity context or application context

Question

I have an async task that makes an upload and shows a progress dialog. I would like to be able to not show the dialog if it is being called by a service and thus can't show a dialog. The problem is there a way to determine which type of context i have(an activity or an application) ?

Answer 1

 if( context instanceof Activity ) {
    //...
 } else {
    //...
 }