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,
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Mixing Java and C/C++ Code
Calling a C/C++ function from Java is actually quite easy but requires several steps:
- The native method must be declared in your Java code.
- The Java Native Interface (JNI) glue layer needs to be implemented.
- Android makefiles have to be created.
- The native method must be implemented in C/C++.
- The native library must be compiled.
- The native library must be loaded.
It really is easy in its own twisted way. We will go through each one of these steps, and by the end of this section, you will know the basics of mixing Java and C/C++. We will discuss the more intricate details of the Android makefiles, which allow you to optimize your code even more, in later sections. Since the Android NDK exists for Linux, MacOS X, and ...
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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.