Android源码阅读指南
源码下载
- 清华大学开源软件镜像站 https://mirrors.tuna.tsinghua.edu.cn/help/AOSP/
- 根据提示，下载 https://mirrors.tuna.tsinghua.edu.cn/aosp-monthly/aosp-latest.tar
- 根据https://blog.csdn.net/u010963246/article/details/71480684 、https://source.android.com/setup/build/initializing#creating-a-case-sensitive-disk-image 创建磁盘镜像
hdiutil create -type SPARSE -fs 'Case-sensitive Journaled HFS+' -size 40g ~/android.dmg hdiutil resize -size \<new-size-you-want\>g ~/android.dmg.sparseimage - 根据 https://mirrors.tuna.tsinghua.edu.cn/help/AOSP/ 执行repo sync
$ cd /Volumes/Android/aosp/ $ repo sync ..... Fetching projects: 100% (592/592), done. Syncing work tree: 100% (592/592), done.
repo操作帮助
参考文档
查看远程分支
$ cd /Volumes/Android/aosp/
$ cd .repo/manifests
$ git branch -a | cut -d / -f 3
* default
android-8.0.0_r17 -> origin
android-8.1.0_r23 -> origin
android-8.1.0_r9 -> origin
master -> origin
...
列出项目及对应目录
$ repo list
...
frameworks/base : platform/frameworks/base
...
查询某个项目的分支
$ repo branch frameworks/base
(no branches)
检出分支
$ repo start master --all
Starting master: 100% (592/592), done.
再次查询某个项目的分支
$ repo branch frameworks/base
* master | in all projects
查找aidl生成的java类
例如查找ActivityManagerService对应的IActivityManager.java、PackageManagerService对应的IPackageManager.java：
public class ActivityManagerService extends IActivityManager.Stub
implements Watchdog.Monitor, BatteryStatsImpl.BatteryCallback {
}
public class PackageManagerService extends IPackageManager.Stub
implements PackageSender {
}
使用命令行进行查找：
$ cd /Volumes/Android/aosp/out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/
$ find . -name "IActivityManager.java" -or -name "IPackageManager.java"
./core/java/android/app/IActivityManager.java
./core/java/android/content/pm/IPackageManager.java
其实阅读源码不一定非要找到aidl生成的java文件，找到aidl即可：
$ cd /Volumes/Android/aosp/frameworks/base
$ find . -name "IActivityManager.aidl" -or -name "IPackageManager.aidl"
./core/java/android/app/IActivityManager.aidl
./core/java/android/content/pm/IPackageManager.aidl