I have listviews that are populated with data from a web service. When the app loads, it calls web services to populate the listviews. This is working fine until I enabled login verification. With login verification, app gets empty data when it loads as the user hasn't logged in yet. The first screen of the app is to prompt for login. Once login is successful, I need to force those listviews that got empty data to be populated with real data. How should one accomplish that?