8.6. Advanced Topics
The following sections present more advanced topics related to the MIDP user interface libraries.
8.6.1. System Screens
Typically, the current screen of the foreground MIDlet is visible on the display. However, under certain circumstances, the system may create a screen that temporarily obscures the current screen of the application. These screens are referred to as system screens. This may occur if the system needs to show a menu or if the system requires the user to edit text on a separate screen instead of a TextField inside a Form. Even though the system screen obscures the application's screen, from the viewpoint of the application the notion of the current screen does not change. In particular, while a system screen ...
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