Service lifecycle

A service can be used in two ways:

Methods that are marked "No" in the Killable column protect the process hosting the activity from being killed from the moment they are called. Thus an activity is in a killable state, for example, from the time onPause() returns to the time onResume() is called. It will not again be killable until onPause() again returns.

As noted in a later section, Processes and lifecycle, an activity that's not technically "killable" by this definition might still be killed by the system — but that would happen only in extreme and dire circumstances when there is no other recourse.

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