By Onur Cinar
Android is likely one of the significant gamers within the cellular phone industry. Android is a cellular platform that's equipped at the most sensible of Linux working approach. The native-code aid on Android deals never-ending possibilities to software builders, no longer constrained the performance that's supplied through Android framework. seasoned Android C++ with the NDK is a sophisticated educational reference for today's extra refined app builders now porting, constructing or utilizing C++ and different local code to combine into the Android platform to run refined local apps and higher acting apps in most cases. utilizing a online game app case examine, this publication explores instruments for troubleshooting, debugging, studying reminiscence matters, unit checking out, unit try code insurance, functionality size, on local functions, in addition to integrating the Android NDK toolchain into present Autoconf, Makefile, CMake, or JAM dependent construct structures. professional Android C++ with the NDK additionally covers the subsequent:
The Android platform, and getting on top of things with the Android NDK, and exploring the APIs which are supplied in local space.
An evaluate of Java local Interface (JNI), and auto-generating JNI code via Simplified Wrapper and Interface Generator (SWIG).
An creation to Bionic API, local networking. local multithreading, and the C++ average Template Library (STL) support.
Native pictures and sound utilizing JNI pix, OpenGL ES, and OpenSL ES.
Debugging and troubleshooting local functions utilizing Logging, GNU Debugger (GDB), Eclipse Debugger, Valgrind, strace, and different tools.
Profiling local code utilizing GProf to spot functionality bottlenecks, and NEON/SIMD optimization from a complicated point of view, with suggestions and recommendations.
What you’ll learn
What is the Android platform, and getting on top of things with the Android NDK.
Using the Eclipse IDE to streamline constructing local applications
How to exploit Java local Interface (JNI) to attach local code to Java world.
Auto-generate JNI code utilizing Simplified Wrapper and Interface Generator (SWIG).
Introduction to Bionic API
Networking via POSIX sockets
Developing multithreaded purposes utilizing POSIX Threads, and Java Threads.
Debug via Logging, GNU Debugger (GDB), and Eclipse Debugger
Analyze reminiscence concerns via Valgrind
C++ aid and conventional Template Library STL
Native images via JNI photos and OpenGL ES
Native Sound via OpenSL ES
Profiling the local code utilizing GProf to spot functionality bottlenecks
Optimize code utilizing SIMD/NEON
Who this e-book is for
This e-book is for software program pros who're attracted to leveraging the Android NDK to port their latest native-code app, resembling C++, to the Android platform, in addition to latest Android builders who're attracted to bettering their apps performance by using native-code.
Table of Contents
Getting begun with C++ on Android
Exploring the Android NDK
Communicating with local Code utilizing JNI
Auto-Generate JNI Code utilizing SWIG
Logging, Debugging, and Troubleshooting
Bionic API Primer
POSIX Socket API: Connection orientated communique
POSIX Socket API: Connetionless communique
POSIX Socket API: neighborhood Communication
Native pix API
Sound local API
Profiling and NEON Optimization
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Additional resources for Pro Android C++ with the NDK
There is no rule for the way in which you connect motors to ports, but I would recommend that you decide on a “standard” method for connecting motors and stick with it for all robots you build. As an example, look at Figure 4-3. When I build a robot I always connect the motor on the left side of the Brick (with the Brick’s sensor ports on the bottom and motor ports on top) to Port B and the motor on the right side of the Brick to Port C. I always use Port A for my third motor. If I build a robot that doesn’t need a third motor, Port A is always left open.
Configure the motor ports to monitor and record. The last item you will need to configure is the amount of time (in seconds) you wish to record your bot’s movements (see Figure 5-6). You can type in the number of seconds you want to record or click the up and down arrows with your mouse to select the number in the Time section. Figure 5-6. Enter the number of seconds to record in the Time section. You can record anywhere from one second up into the hundreds of minutes. Is this realistic? Not really.
By the time you finish this chapter, you should understand the importance of program structure to you and your robots. What Do I Mean by Structure? In Chapter 1, I gave you some examples of real-world programs. Would the following example have made any sense? Teacher: Class, open your books to page 55. ] Teacher: Class, I want you to get out your math books. ] How can you read page 55 if you haven’t yet been told which book to open? You might answer, “Yes, but I’m in math class, and the teacher said turn to page 55.