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Android NDK Beginner`s Guide - Second Edition

You're reading from   Android NDK Beginner`s Guide - Second Edition Discover the native side of Android and inject the power of C/C++ in your applications

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Product type Paperback
Published in Apr 2015
Publisher Packt
ISBN-13 9781783989645
Length 494 pages
Edition 1st Edition
Languages
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Author (1):
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Sylvain Ratabouil Sylvain Ratabouil
Author Profile Icon Sylvain Ratabouil
Sylvain Ratabouil
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Table of Contents (13) Chapters Close

Preface 1. Setting Up Your Environment FREE CHAPTER 2. Starting a Native Android Project 3. Interfacing Java and C/C++ with JNI 4. Calling Java Back from Native Code 5. Writing a Fully Native Application 6. Rendering Graphics with OpenGL ES 7. Playing Sound with OpenSL ES 8. Handling Input Devices and Sensors 9. Porting Existing Libraries to Android 10. Intensive Computing with RenderScript 11. Afterword Index

Converting Java strings in native code


The first kind of entry we will handle is strings. Strings, which are represented as (almost) classic objects in Java, can be manipulated on the native side and translated to native strings, that is, raw character arrays, thanks to JNI. Strings are a first-class citizen despite their complexity inherent to their heterogeneous representations.

In this part, we will send Java strings to the native side and translate them to their native counterpart. We will also convert them back to a Java string.

Note

The resulting project is provided with this book under the name Store_Part5.

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