Showing progress on activity over large time period

1. Which of the following components are circular indicators of progress and activity?
2. How do I show progress on Android?

Which of the following components are circular indicators of progress and activity?

On Android, the “swipe to refresh” gesture displays a circular progress indicator to indicate that the UI is being refreshed. Swipe to refresh manually refreshes screen content with a user action or gesture.

How do I show progress on Android?

In android there is a class called ProgressDialog that allows you to create progress bar. In order to do this, you need to instantiate an object of this class. Its syntax is. ProgressDialog progress = new ProgressDialog(this);