Feipeng Liu's Android Native Development Kit Cookbook PDF

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By Feipeng Liu

ISBN-10: 1849691509

ISBN-13: 9781849691505

A step by step instructional with greater than 60 concise recipes on Android NDK improvement skills.

Overview

• construct, debug, and profile Android NDK apps.
• enforce a part of Android apps in local C/C++ code.
• Optimize code functionality in meeting with Android NDK.

In Detail

Building Android functions may frequently suggest that you just spend your entire time operating in Java. There are in spite of the fact that occasions while this isn't the best or top technique for the appliance being outfitted. this is often the place Android NDK comes in.

Android NDK permits the developer to write down in local C/C++, supplying you with the facility to reuse code and libraries and likewise, quite often, elevate the rate and potency of your application.

The Android local improvement equipment Cookbook can assist you recognize the advance, development, and debugging of your local Android functions. we'll notice and research JNI programming and crucial NDK APIs comparable to OpenGL ES, and the local software API. we'll then discover the method of porting latest libraries and software program to NDK. through the top of this ebook it is possible for you to to construct your personal apps in NDK apps.

Android local improvement equipment Cookbook starts off with uncomplicated recipes to help you within the construction and debugging of local apps, and JNI programming. The recipes conceal quite a few themes of program improvement with Android NDK similar to OpenGL programming and Multimedia programming. we'll start with an easy recipe, hi NDK, prior to relocating directly to disguise complicated issues with recipes on OpenGL ES that concentrate on 2nd and 3D images, in addition to recipes that debate operating with NDK and exterior APIs. while you're searching for how you can make your software on hand in Android and take measures to spice up your application’s functionality, then this Cookbook is for you.

What you'll research from this book

• increase Android apps in C/C++ and not using a unmarried line of Java.
• software 2D/3D photos with either OpenGL ES 1x and 2.0 in Android NDK.
• Write multi-threaded Android apps in Android NDK.
• Port present C/C++ libraries and purposes to Android with NDK.
• improve multimedia Android apps with Android NDK.

Approach

This publication is written in a Cookbook sort, starting with recipes which concentrate on aiding builders make their software/application on hand in Android.

Who this e-book is written for

Android builders who are looking to research Android NDK programming, or strengthen multimedia and video games in Android NDK will take advantage of this booklet.

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Extra resources for Android Native Development Kit Cookbook

Example text

We will see an example of this in the Manipulating classes in JNI recipe in this chapter. ff Registering Native Methods: JNI can automatically discover the native method implementation if its function name follows a specific naming convention as mentioned in Chapter 1, Hello NDK. This is not the only way. In our sample project, we explicitly called the RegisterNatives JNI function to register the native methods. The RegisterNatives function has the following prototype: jint RegisterNatives(JNIEnv *env, jclass clazz, const JNINativeMethod *methods, jint nMethods); The clazz argument is a reference to the class in which the native method is to be registered.

The execution result shown earlier proves that the Java code can invoke the two registered native methods successfully. Note that this example uses some JNI features that we're going to cover in later recipes, including the FindClass function and field descriptors. It is alright if don't fully understand the code at this stage. You can always go back to it after learning more about those topics. Passing parameters and receiving returns in primitive types Java code can pass parameters to native methods and receive the processing results returned.

After the download is complete, run the installation package and make sure that the UNIX Development option is selected for installation. As usual, Java JDK 6 or above is required. Mac OS X usually ships with a full JDK. We can verify that your machine has the required version by using the following command: $javac -version How to do it… Setting up an Android NDK development environment on Mac OS X is similar to setting it up on Ubuntu Linux. The following steps explain how we can do this: 1. Follow steps 1 to 6 of the Setting up an Android NDK development environment in Windows recipe to install the ADT plugin for Eclipse.

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Android Native Development Kit Cookbook by Feipeng Liu


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