In Qtopia PDA Edition, the user can freely switch between applications by tapping on the application icons shown in the task bar.
Phone-Style UI
The user is able to:
Launch another application by pressing the Home key to return to home screen without terminating current application.
Switch between previously launched applications by multi-pressing the Home key to cycle between all applications and the home screen.
Terminate current application by the normal use of the Back button.
When applications are switched from, whether by the user directly switching to another application, or by a window spontaneously obscuring them (for example, incoming call), they receive a windowing event. Applications are written to respond accordingly. Most applications do nothing, as they are just sitting there doing nothing, waiting for user input anyway. Some applications will pause their activity - for example an action game will pause and the user will need to manually unpause when they return and are ready to resume the action; a video playback might pause but resume automatically when returned to; an audio playback might not pause at all, except when a call comes in.
