Book Image

Android System Programming

By : Roger Ye, Shen Liu
Book Image

Android System Programming

By: Roger Ye, Shen Liu

Overview of this book

Android system programming involves both hardware and software knowledge to work on system level programming. The developers need to use various techniques to debug the different components in the target devices. With all the challenges, you usually have a deep learning curve to master relevant knowledge in this area. This book will not only give you the key knowledge you need to understand Android system programming, but will also prepare you as you get hands-on with projects and gain debugging skills that you can use in your future projects. You will start by exploring the basic setup of AOSP, and building and testing an emulator image. In the first project, you will learn how to customize and extend the Android emulator. Then you’ll move on to the real challenge—building your own Android system on VirtualBox. You’ll see how to debug the init process, resolve the bootloader issue, and enable various hardware interfaces. When you have a complete system, you will learn how to patch and upgrade it through recovery. Throughout the book, you will get to know useful tips on how to integrate and reuse existing open source projects such as LineageOS (CyanogenMod), Android-x86, Xposed, and GApps in your own system.
Table of Contents (15 chapters)

Why customize the Android emulator

You may be wondering why we want to customize Android emulator. Google already provides it in the Android SDK and we can just use it without any additional effort. However, as a developer, you may find that it may not be good enough to meet your expectations. For example, in the most recent Android Studio or SDK releases, the Intel x86 emulator is recommended for developers, since it is much faster than the ARM version. One problem with using the Intel x86 emulator is that many Android applications with native code cannot run properly, because the x86 native library is not built into these applications.

To resolve this issue, we can integrate Houdini libraries from Intel to the emulator. With Houdini libraries, we can execute ARM native code on the Intel x86 platform. Another common request for Android emulator is that Google Mobile Services (GMS) is not included in it. Many developers...