Chapter 18. Handling Activity Lifecycle Events
As you know, Android devices, by and large, are phones. As such, some activities are more important than others—taking a call is probably more important to users than playing Sudoku. And, since it is a phone, it probably has less RAM than your current desktop or notebook.
As a result of the phone's limited RAM, your activity may find itself being killed off because other activities are going on and the system needs your activity's memory. Think of it as the Android equivalent of the circle of life—your activity dies so others may live, and so on. You cannot assume that your activity will run until you think it is complete, or even until the user thinks it is complete. This is one example, perhaps the ...
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