Information: Intermediate
If some task may take long time then if user will not see any message or instruction or loading bar, he/she will close the application. That’s why Loading bar is used that represents to wait for some time until loading bar is filling its portion completely.
Here loading bar is drawn in canvas display and for animation timer is used.
This article explains all the modules with example and also with snapshot.
--Vkmunjpara 17:47, 23 September 2009 (UTC)