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)

Adding Wi-Fi to the emulator

With the introduction of Wi-Fi architecture in Android, we can now extend the emulator to support Wi-Fi. To add Wi-Fi in the emulator, we need to build wpa_supplicant for the emulator and choose the right device driver for the eth1 network interface.

Enabling wpa_supplicant in

In the default emulator build, wpa_supplicant is not built. To enable building wpa_supplicant for the emulator, we can add the following lines in our


When BOARD_WPA_SUPPLICANT_DRIVER is defined, the following configuration in external/wpa_supplicant_8/wpa_supplicant/ will be changed to true: