Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Android NDK Beginner`s Guide - Second Edition
  • Table Of Contents Toc
Android NDK Beginner`s Guide - Second Edition

Android NDK Beginner`s Guide - Second Edition

By : Ratabouil
3.6 (8)
Buy this Book
close
close
Android NDK Beginner`s Guide - Second Edition

Android NDK Beginner`s Guide - Second Edition

3.6 (8)
By: Ratabouil
Buy this Book

Overview of this book

Are you an Android Java programmer who needs more performance? Are you a C/C++ developer who doesn’t want to bother with the complexity of Java and its out-of-control garbage collector? Do you want to create fast intensive multimedia applications or games? If you’ve answered yes to any of these questions then this book is for you. With some general knowledge of C/C++ development, you will be able to dive headfirst into native Android development.
Table of Contents (13 chapters)
close
close
close
Preface
Icon
Preface
Icon
What this book covers
Icon
What you need for this book
Icon
Who this book is for
Icon
Sections
Icon
Time for action – heading
Icon
Conventions
Icon
Reader feedback
Icon
Customer support
Lock Free Chapter
1
1. Setting Up Your Environment
Icon
1. Setting Up Your Environment
Icon
Getting started with Android development
Icon
Time for action – preparing Windows for Android development
Icon
Time for action – installing Android SDK and NDK on Windows
Icon
Time for action – preparing OS X for Android development
Icon
Time for action – installing Android SDK and NDK on OS X
Icon
Time for action – preparing Ubuntu for Android development
Icon
Time for action – installing Android SDK and NDK on Ubuntu
Icon
Time for action – installing Eclipse with ADT on your OS
Icon
Time for action – creating an Android virtual device
Icon
Time for action – setting up an Android device
Icon
Summary
2
2. Starting a Native Android Project
Icon
2. Starting a Native Android Project
Icon
Building NDK sample applications
Icon
Time for action – compiling and deploying San Angeles sample
Icon
Creating your first native Android project
Icon
Time for action – creating a native Android project
Icon
Interfacing Java with C/C++
Icon
Time for action – calling C code from Java
Icon
Debugging native Android applications
Icon
Time for action – debugging a native Android application
Icon
Analyzing native crash dumps
Icon
Time for action – analyzing a native crash dump
Icon
Setting up a Gradle project to compile native code
Icon
Time for action – creating a native Android project
Icon
Time for action – using your own Makefiles with Gradle
Icon
Summary
3
3. Interfacing Java and C/C++ with JNI
chevron up
Icon
3. Interfacing Java and C/C++ with JNI
Icon
Initializing a native JNI library
Icon
Time for action – defining a simple GUI
Icon
Time for action – initializing the native store
Icon
Converting Java strings in native code
Icon
Time for action – handling strings in the native store
Icon
Passing Java primitives to native code
Icon
Time for action – handling primitives in the native store
Icon
Referencing Java objects from native code
Icon
Time for action – saving references to Objects in native Store
Icon
Managing Java arrays
Icon
Time for action – handling Java arrays in native Store
Icon
Raising and checking Java exceptions
Icon
Time for action – raising & catching exceptions in native Store
Icon
Summary
4
4. Calling Java Back from Native Code
Icon
4. Calling Java Back from Native Code
Icon
Calling Java back from native code
Icon
Time for action – determining JNI method signatures
Icon
Time for action – calling back Java from native code
Icon
Time for action – allocating an object with JNI
Icon
Time for action – running and synchronizing a thread
Icon
Processing bitmaps natively
Icon
Time for action – decoding a camera's feed
Icon
Time for action – processing pictures with the Bitmap API
Icon
Summary
5
5. Writing a Fully Native Application
Icon
5. Writing a Fully Native Application
Icon
Creating a native Activity
Icon
Time for action – creating a basic native Activity
Icon
Handling Activity events
Icon
Time for action – stepping the event loop
Icon
Time for action – handling Activity events
Icon
Accessing window surface natively
Icon
Time for action – displaying raw graphics
Icon
Measuring time natively
Icon
Time for action – animating graphics with a timer
Icon
Summary
6
6. Rendering Graphics with OpenGL ES
Icon
6. Rendering Graphics with OpenGL ES
Icon
Initializing OpenGL ES
Icon
Time for action – initializing OpenGL ES
Icon
Time for action – clearing and swapping buffers
Icon
An insight into the OpenGL pipeline
Icon
Loading textures using the Asset manager
Icon
Time for action – reading assets with the Asset manager
Icon
Time for action – compiling and embedding libpng module
Icon
Time for action – loading a PNG image
Icon
Time for action – generating an OpenGL texture
Icon
Drawing 2D sprites
Icon
Time for action – initializing OpenGL ES
Icon
Rendering particle effects
Icon
Time for action – rendering a star field
Icon
Adapting graphics to various resolutions
Icon
Time for action – adapting resolution with off-screen rendering
Icon
Summary
7
7. Playing Sound with OpenSL ES
Icon
7. Playing Sound with OpenSL ES
Icon
Initializing OpenSL ES
Icon
Time for action – creating OpenSL ES engine and output
Icon
Playing music files
Icon
Time for action – playing background music
Icon
Playing sounds
Icon
Time for action – creating and playing a sound buffer queue
Icon
Recording sounds
Icon
Summary
8
8. Handling Input Devices and Sensors
Icon
8. Handling Input Devices and Sensors
Icon
Interacting with touch events
Icon
Time for action – handling touch events
Icon
Detecting keyboard, D-Pad, and Trackball events
Icon
Time for action – handling keyboard, D-Pad, and trackball events natively
Icon
Probing device sensors
Icon
Time for action – handling accelerometer events
Icon
Time for action – turning an Android device into a Joypad
Icon
Summary
9
9. Porting Existing Libraries to Android
Icon
9. Porting Existing Libraries to Android
Icon
Activating the Standard Template Library
Icon
Time for action – activating GNU STL in DroidBlaster
Icon
Time for action – read files with STL stream
Icon
Time for action – using STL containers
Icon
Porting Box2D to Android
Icon
Time for action – compiling Box2D on Android
Icon
Time for action – running Box2D physics engine
Icon
Prebuilding Boost on Android
Icon
Time for action – prebuilding Boost static library
Icon
Time for action – compiling an executable linked to Boost
Icon
Mastering module Makefiles
Icon
Summary
10
10. Intensive Computing with RenderScript
Icon
10. Intensive Computing with RenderScript
Icon
What is RenderScript ?
Icon
Executing a predefined Intrinsic
Icon
Time for action – creating a Java UI
Icon
Time for action – running RenderScript Blur intrinsic
Icon
Writing a custom Kernel
Icon
Time for action – writing a luminance threshold filter
Icon
Combining scripts together
Icon
Time for action – combining Intrinsics and scripts together
Icon
Summary
11
11. Afterword
Icon
11. Afterword
Icon
Where we have been
Icon
Where you can go
Icon
Where to find help
Icon
This is just the beginning
12
Index
Icon
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.

CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Android NDK Beginner`s Guide - Second Edition
End of Section 3
Next Section
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful
Order Page Read Now

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon