An activity can be in one of a number of different states during the course of its execution within an application:
·Active / Running – The activity is at the top of the Activity Stack, is the foreground task visible on the device screen, has focus and is currently interacting with the user. This is the least likely activity to be terminated in the event of a resource shortage.
·Paused – The activity is visible to the user but does not currently have focus (typically because this activity is partially obscured by the current active activity). Paused activities are held in memory, remain attached to the window manager, retain all state information and can quickly be restored to active status when moved to the top of the Activity Stack.
·Stopped – The activity is currently not visible to the user (in other words it is totally obscured on the device display by other activities). As with paused activities, it retains all...
