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Android 5.1 AOSP 源码获取

本文已同步更新至：http://dxjia.cn/2015/08/android-aosp-code-sync/

Android 5.1源码开放有一个多月啦，但由于城墙的关系，每次想着更新最新源码学习都万般纠结，现在发现国内有开源镜像啦，这就好多啦，感谢清华开源工作团队的无私工作啊。

地址：http://mirrors.tuna.tsinghua.edu.cn/

根据页面上的介绍，该镜像只支持源码sync，不支持sdk更新。

  • AOSP 镜像服务单 IP 并发数限制为 4。因版权原因，我们无法提供 Android SDK 镜像。

可以看一下他给出的使用帮助：http://mirrors.tuna.tsinghua.edu.cn/help/#AOSP

本文的步骤如果不成功，请移步上面的帮助链接，因为可能方法有变动。

因为我本地已经安装好了repo工具，所以直接根据使用帮助里面介绍的repo init，然后repo sync就可以了。

下面介绍一下具体的步骤：

安装repo工具

repo需要安装最新版本的，如果已经像我一样之前有安装的，可以略过此步。

官方给出的repo下载如下：

mkdir ~/bin

PATH=~/bin:$PATH

curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo

chmod a+x ~/bin/repo

repo init

新建存放源码的目录，我这里为 aosp目录，然后cd进入aosp目录，使用repo init目录来初始化仓库。

google官方给出的sync最新源码的命令为：

repo init -u https://android.googlesource.com/platform/manifest

如果不想获取到最新，只想得到某个指定版本，就需要多加一个-b参数，然后跟具体release版本名

repo init -u https://android.googlesource.com/platform/manifest -b android-4.0.1_r1

可惜国内同样不能用啦，我们要做的就是把-u参数修改为TUNA（清华镜像）的，如下：

repo init -u https://aosp.tuna.tsinghua.edu.cn/aosp/platform/manifest

## 如果提示无法连接到 gerrit.googlesource.com，可以编辑 ~/bin/repo，把 REPO_URL 一行替换成下面的：

## REPO_URL = 'https://gerrit-google.tuna.tsinghua.edu.cn/git-repo'
repo init -u https://aosp.tuna.tsinghua.edu.cn/platform/manifest -b android-5.1.0_r3
这里再扩展介绍一下 -b参数的获取，android版本号实在是太多啦，不仅andriod 4.0 5.0的，还有小版本r1  r2，怎么才能搞到正确的分支名呢，而且指定的分支名还需要你的更新源上得有的，通过下面的方式：
cd ~

git clone git://aosp.tuna.tsinghua.edu.cn/aosp/platform/manifest

cd manifest

git branch -a
这样就会列出清华镜像上aosp所有的分支名啦，从中找到你想要的即可
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repo sync
repo sync
这样就开始更新代码啦，速度还不错。
替换已有的 AOSP 源代码的 remote
如果你之前已经通过某种途径获得了 AOSP 的源码(或者你只是 init 这一步完成后)， 你希望以后通过 TUNA 同步 AOSP 部分的代码，只需要将 .repo/manifest.xml 把其中的 aosp 这个 remote 的 fetch 从 https://android.googlesource.com 改为 https://aosp.tuna.tsinghua.edu.cn/
<manifest>

   <remote  name="aosp"

-           fetch="https://android.googlesource.com"

+           fetch="https://aosp.tuna.tsinghua.edu.cn"

            review="android-review.googlesource.com" />

   <remote  name="github" 
05-11 09:42
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