January 2017
Beginner to intermediate
624 pages
22h 42m
English
book
Android Programming: The Big Nerd Ranch Guide, Third Edition
by Bill Phillips, Chris Stewart, Kristin Marsicano
Content preview from Android Programming: The Big Nerd Ranch Guide, Third Edition
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The Activity Lifecycle, Revisited
Overriding onSaveInstanceState(Bundle) is not just for handling rotation or other runtime configuration changes. An activity can also be destroyed by the OS if the user navigates away for a while and Android needs to reclaim memory (e.g., if the user presses Home and then goes and watches a video or plays a game).
Practically speaking, the OS will not reclaim a visible (paused or resumed) activity. Activities are not marked as “killable” until onStop() is called and finishes executing.
Stopped activities are fair game to be killed, though. Still, not to worry. If an activity is stopped, that means onSaveInstanceState(Bundle) was called. So resolving the data-loss-across-rotation bug also addresses ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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