January 2012
Intermediate to advanced
282 pages
7h 4m
English
Content preview from Pro Android Apps Performance OptimizationBecome 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,
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.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.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.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.
Responsiveness
Performance is not only about raw speed. Your application will be perceived as being fast as long as it appears fast to the user, and to appear fast your application must be responsive. As an example, to appear faster, your application can defer allocations until objects are needed, a technique known as lazy initialization, and during the development process you most likely want to detect when slow code is executed in performance-sensitive calls.
The following classes are the cornerstones of most Android Java applications:
ApplicationActivityServiceContentProviderBroadcastReceiverFragment(Android 3.0 and above)View
Of particular interest in these classes are all the onSomething() methods that are called from the main thread, ...
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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.