Android aosp源码阅读

Posted 2022-01-06 Notzuonotdied

前言

最近因为找工作，需要频繁查阅android源码。因此，打算在本地硬盘上下载Android源码，通过Android Studio来阅读。

• Android 源码构建：https://source.android.com/setup【建议直接阅读该文档】
• Android - AOSP源码编译和调试

操作流程

配置硬盘

由于我使用的是MacOS，所以仅提供MacOS的配置流程。

1. 打开Disk Utility
2. File -> New Image -> Blank Image
3. 按照下图配置一块200G，区分大小写的磁盘分区。
   • 一定要区分大小写，否则下载源码后，占用空间极大。
   • 区分大小写后，Android 12的源码大小为139GB；不区分大小写，占用空间超过700GB。

下载源码

下载Android系统源代码：建议按照清华大学开源软件镜像站文档下载源码。

• 如果需要下载指定版本的源码，tag可见：源代码标记和 build

生成

• 初始化环境变量：source build/envsetup.sh
• 编译，生成idegen.jar：mmm development/tools/idegen/
• 生成android.iws、android.ipr、android.iml：sh ./development/tools/idegen/idegen.sh

排除部分模块

打开android.iml，提前添加如下内容，提高加载Android源码工程的速度。

<excludeFolder url="file://$MODULE_DIR$/.repo" />
<excludeFolder url="file://$MODULE_DIR$/abi" />
<excludeFolder url="file://$MODULE_DIR$/art" />
<excludeFolder url="file://$MODULE_DIR$/bionic" />
<excludeFolder url="file://$MODULE_DIR$/bootable" />
<excludeFolder url="file://$MODULE_DIR$/build" />
<excludeFolder url="file://$MODULE_DIR$/cts" />
<excludeFolder url="file://$MODULE_DIR$/dalvik" />
<excludeFolder url="file://$MODULE_DIR$/developers" />
<excludeFolder url="file://$MODULE_DIR$/development" />
<excludeFolder url="file://$MODULE_DIR$/device" />
<excludeFolder url="file://$MODULE_DIR$/docs" />
<excludeFolder url="file://$MODULE_DIR$/external" />
<excludeFolder url="file://$MODULE_DIR$/external/bluetooth" />
<excludeFolder url="file://$MODULE_DIR$/external/chromium" />
<excludeFolder url="file://$MODULE_DIR$/external/emma" />
<excludeFolder url="file://$MODULE_DIR$/external/icu4c" />
<excludeFolder url="file://$MODULE_DIR$/external/jdiff" />
<excludeFolder url="file://$MODULE_DIR$/external/webkit" />
<excludeFolder url="file://$MODULE_DIR$/frameworks/base/docs" />
<excludeFolder url="file://$MODULE_DIR$/hardware" />
<excludeFolder url="file://$MODULE_DIR$/libcore" />
<excludeFolder url="file://$MODULE_DIR$/libnativehelper" />
<excludeFolder url="file://$MODULE_DIR$/ndk" />
<excludeFolder url="file://$MODULE_DIR$/out" />
<excludeFolder url="file://$MODULE_DIR$/out/eclipse" />
<excludeFolder url="file://$MODULE_DIR$/out/host" />
<excludeFolder url="file://$MODULE_DIR$/out/target/common/docs" />
<excludeFolder url="file://$MODULE_DIR$/out/target/common/obj/JAVA_LIBRARIES/android_stubs_current_intermediates" />
<excludeFolder url="file://$MODULE_DIR$/out/target/product" />
<excludeFolder url="file://$MODULE_DIR$/packages" />
<excludeFolder url="file://$MODULE_DIR$/pdk" />
<excludeFolder url="file://$MODULE_DIR$/prebuilt" />
<excludeFolder url="file://$MODULE_DIR$/prebuilts" />
<excludeFolder url="file://$MODULE_DIR$/sdk" />
<excludeFolder url="file://$MODULE_DIR$/system" />
<excludeFolder url="file://$MODULE_DIR$/tools" />

附录

• Mac 中下载阅读 Android 源码
• Android Studio导入系统源码及配置

国内源

• 清华大学开源软件镜像站

调试Framework

• 五、调试 Android Framework