After your BlackBerry® device application adds custom messages to the message list, you must manage the messages. For example, a BlackBerry device user might open the application and delete a message there, or the application might synchronize with a server and get more messages to display in the message list.

To keep the message list synchronized with the custom messages in a custom folder, an application needs to be notified when a custom folder changes.

1. Import the required classes and interfaces.

   import net.rim.blackberry.api.messagelist.*;

2. Invoke ApplicationMessageFolder.fireElementAdded() to notify an application when a message is added to a custom folder.

   inboxFolder.fireElementAdded( newMessage );

3. Invoke ApplicationMessageFolder.fireElementRemoved() to notify an application when a message is removed from a custom folder.

   inboxFolder.fireElementRemoved( deletedMessage );

4. Invoke ApplicationMessageFolder.fireElementUpdated() to notify an application when a message in a custom folder is updated.

   inboxFolder.fireElementUpdated( updatedMessage );

5. Invoke ApplicationMessageFolder.fireReset() to notify an application when more than one message in a custom folder changes.

   inboxFolder.fireReset();