How to display animation image like the Quick Search Box

I have implemented an activity that retrieves data from a web service and display it in the AutoCompleteTextView. This has been working quite well.

I'm interested in displaying a spinning animation while the data is being retrieved (The same effect like the Quick Search Box)

I try to figure out how the QSB is doing it (10x Open Sourc开发者_高级运维e!) but couldn't find any place where the spinner image is being put/set/drawn onto the EditText control.

alt text http://img704.imageshack.us/img704/8210/spinnera.png

There is no public interface to set the 'working spinner'.

If you implemented the suggestion provider, the spinner shows when the query starts.

Reference