March 2013
Beginner to intermediate
580 pages
16h 11m
English
Content preview from Android Programming: The Big Nerd Ranch GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Rotation Handling and onSaveInstanceState(Bundle)
The onSaveInstanceState(Bundle) is another tool you have used to handle rotation. In fact, if your app does not have any problems with rotation, it is because the default behavior of onSaveInstanceState(…) is working.
Your CriminalIntent app is a good example. CrimeFragment is not retained, but if you make changes to the crime’s title or toggle the check box, the new states of these View objects are automatically saved out and restored after rotation. This is what onSaveInstanceState(…) was designed to do – save out and restore the UI state of your app.
The major difference between overriding Fragment.onSaveInstanceState(…) and retaining the fragment is how long the preserved data lasts. If ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.