#### **概述** Android源代码开发环境与SDK开发环境相比，优势是可以查看和调试系统源代码，包括Java代码和C/C++代码。这对应用开发也是非常有用的，因为在开发中碰到疑难杂症时可以跟踪到系统内部去定位问题。对于涉及到C/C++代码的开发，例如JNI开发和安全相关开发，更加建议在Android源代码开发环境进行，这样就可以利用gdb以及gdbclient工具进行调试。 主要讲Android源代码下载、编译和运行，以及C/C++、Java代码的调试。 * 开发机器配置 * Android源码下载、编译和运行 * Linux内核源码下载、编译和运行 * Java代码开发和调试 * C/C++代码开发和调试 #### **开发机器配置** **硬件** * CPU I5及以上 * 内存16GB及以上 * 硬盘40GB及以上 **软件** * Ubuntu 10.04 64bit * Java SDK 1.6 * 其它Package * http://source.android.com/source/initializing.html #### **Android源码下载** * $ mkdir ~/bin $ PATH=~/bin:$PATH * $ curl https://dl-ssl.google.com/dl/googlesource/git-repo/repo > ~/bin/repo $ chmod a+x ~/bin/repo * $ mkdir WORKING_DIRECTORY $ cd WORKING_DIRECTORY * $ repo init -u https://android.googlesource.com/platform/manifest -b android-4.2_r1 * $ repo sync * http://source.android.com/source/downloading.html #### **Android源码编译和运行** * $ . build/envsetup.sh * $ lunch full-eng * $ make –j8 * $ emulator & * http://source.android.com/source/building-running.html #### **Linux内核源码下载、编译和运行** * $ git clone https://android.googlesource.com/kernel/goldfish.git * $ cd goldfish * $ git branch –a remotes/origin/android-goldfish-3.4 * $ git checkout remotes/origin/android-goldfish-3.4 * $ export PATH=$(AOSP)/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin:$PATH * $ export ARCH=arm * $ export SUBARCH=arm * $ export CROSS_COMPILE=arm-eabi- * $ make goldfish_armv7_defconfig * $ make * $ emulator –kernel kernel/goldfish/arch/arm/boot/zImage & * http://source.android.com/source/building-kernels.html #### **Java代码开发和调试** * 安装Eclipse $ sudo apt-get install eclipse  * 拷贝.classpath文件 * $ cd /path/to/android/root * $ cp development/ide/eclipse/.classpath . * $ chmod u+w .classpath * 修改Eclipse内存配置 * 打开/usr/lib/eclipse/eclipse.ini * 将-Xms和-Xmx均设置为2048m * 导入Android源码到Eclipse * File > New > Java Project * Pick a project name, "android" or anything you like. * Select "Create project from existing source", enter the path to your Android root directory, and click Finish. * 新增App工程到Android源码工程 * Project > Properties * Select "Java Build Path" from the left-hand menu. * Choose the "Source" tab. * Click "Add Folder..." * Add your app's src directory. * Click OK. **使用Eclipse调试Java源码** **启动emulator** * $ cd /path/to/android/root * $ . build/envsetup.sh * $ lunch 1 * $ emulator & **打开ddms** * $ ddms * Select a process **打开eclipse** * Run > Debug Configuration... * Right-click "Remote Java Application", select "New". * Pick a name, i.e. "android-debug" or anything you like. * Set the "Project" to your project name. * Keep the Host set to "localhost", but change Port to 8700. * Click the "Debug" button and you should be all set. http://source.android.com/source/using-eclipse.html #### **C/C++代码开发和调试** **安装Vim** sudo apt-get install vim **启动Emulato**r * $ cd /path/to/android/root * $ . build/envsetup.sh * $ lunch 1 * $ emulator & * $ adb shell **在adb shell中启动gdbserver** `root@android:/ gdbserver :5039 --attach <pid>` **在另外一个终端启动gdbclient** * $ cd /path/to/android/root * $ . build/envsetup.sh * $ lunch 1 * $ adb forward tcp:5039 tcp:5039 * $gdbclient * https://github.com/keesj/gomo/wiki/AndroidGdbDebugging