Android 5.1源碼開放有一個(gè)多月啦，但由于城墻的關(guān)系，每次想著更新最新源碼學(xué)習(xí)都萬般糾結(jié)，現(xiàn)在發(fā)現(xiàn)國內(nèi)有開源鏡像啦，這就好多啦，感謝清華開源工作團(tuán)隊(duì)的無私工作啊。
地址：http://mirrors.tuna.tsinghua.edu.cn/
根據(jù)頁面上的介紹，該鏡像只支持源碼sync，不支持sdk更新。
可以看一下他給出的使用幫助：http://mirrors.tuna.tsinghua.edu.cn/help/#AOSP
因?yàn)槲冶镜匾呀?jīng)安裝好了repo工具，所以直接根據(jù)使用幫助里面介紹的repo init，然后repo sync就可以了。
下面介紹一下具體的步驟：
repo需要安裝最新版本的，如果已經(jīng)像我一樣之前有安裝的，可以略過此步。
官方給出的repo下載如下：
mkdir ~/binPATH=~/bin:$PATHcurl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repochmod a+x ~/bin/repo
新建存放源碼的目錄，我這里為 aosp目錄，然后cd進(jìn)入aosp目錄，使用repo init目錄來初始化倉庫。
google官方給出的sync最新源碼的命令為：
repo init -u https://android.googlesource.com/platform/manifest
如果不想獲取到最新，只想得到某個(gè)指定版本，就需要多加一個(gè)-b參數(shù)，然后跟具體release版本名
repo init -u https://android.googlesource.com/platform/manifest -b android-4.0.1_r1
可惜國內(nèi)同樣不能用啦，我們要做的就是把-u參數(shù)修改為TUNA（清華鏡像）的，如下：
repo init -u https://aosp.tuna.tsinghua.edu.cn/aosp/platform/manifest## 如果提示無法連接到 gerrit.googlesource.com，可以編輯 ~/bin/repo，把 REPO_URL 一行替換成下面的：## 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這里再擴(kuò)展介紹一下 -b參數(shù)的獲取，android版本號(hào)實(shí)在是太多啦，不僅andriod 4.0 5.0的，還有小版本r1 r2，怎么才能搞到正確的分支名呢，而且指定的分支名還需要你的更新源上得有的，通過下面的方式：
cd ~git clone git://aosp.tuna.tsinghua.edu.cn/aosp/platform/manifestcd manifestgit branch -a
這樣就會(huì)列出清華鏡像上aosp所有的分支名啦，從中找到你想要的即可
* master remotes/origin/HEAD -> origin/master remotes/origin/adt_23.0.3 remotes/origin/android-1.6_r1 remotes/origin/android-1.6_r1.1 remotes/origin/android-1.6_r1.2 remotes/origin/android-1.6_r1.3 remotes/origin/android-1.6_r1.4 remotes/origin/android-1.6_r1.5 remotes/origin/android-1.6_r2 remotes/origin/android-2.0.1_r1 remotes/origin/android-2.0_r1 remotes/origin/android-2.1_r1 remotes/origin/android-2.1_r2 remotes/origin/android-2.1_r2.1p remotes/origin/android-2.1_r2.1p2 remotes/origin/android-2.1_r2.1s remotes/origin/android-2.2.1_r1 remotes/origin/android-2.2.1_r2 remotes/origin/android-2.2.2_r1 remotes/origin/android-2.2.3_r1 remotes/origin/android-2.2.3_r2 remotes/origin/android-2.2.3_r2.1 remotes/origin/android-2.2_r1 remotes/origin/android-2.2_r1.1 remotes/origin/android-2.2_r1.2 remotes/origin/android-2.2_r1.3 remotes/origin/android-2.3.1_r1 remotes/origin/android-2.3.2_r1 remotes/origin/android-2.3.3_r1 remotes/origin/android-2.3.3_r1.1 remotes/origin/android-2.3.4_r0.9 remotes/origin/android-2.3.4_r1 remotes/origin/android-2.3.5_r1 remotes/origin/android-2.3.6_r0.9 remotes/origin/android-2.3.6_r1 remotes/origin/android-2.3.7_r1 remotes/origin/android-2.3_r1 remotes/origin/android-4.0.1_r1 remotes/origin/android-4.0.1_r1.1 remotes/origin/android-4.0.1_r1.2 remotes/origin/android-4.0.2_r1 remotes/origin/android-4.0.3_r1 remotes/origin/android-4.0.3_r1.1 remotes/origin/android-4.0.4_r1 remotes/origin/android-4.0.4_r1.1 remotes/origin/android-4.0.4_r1.2 remotes/origin/android-4.0.4_r2 remotes/origin/android-4.0.4_r2.1 remotes/origin/android-4.1.1_r1 remotes/origin/android-4.1.1_r1.1 remotes/origin/android-4.1.1_r2 remotes/origin/android-4.1.1_r3 remotes/origin/android-4.1.1_r4 remotes/origin/android-4.1.1_r5 remotes/origin/android-4.1.1_r6 remotes/origin/android-4.1.1_r6.1 remotes/origin/android-4.1.2_r1 remotes/origin/android-4.1.2_r2 remotes/origin/android-4.1.2_r2.1 remotes/origin/android-4.2.1_r1 remotes/origin/android-4.2.1_r1.1 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remotes/origin/android-4.4.4_r2 remotes/origin/android-4.4.4_r2.0.1 remotes/origin/android-4.4_r1 remotes/origin/android-4.4_r1.0.1 remotes/origin/android-4.4_r1.1 remotes/origin/android-4.4_r1.1.0.1 remotes/origin/android-4.4_r1.2 remotes/origin/android-4.4_r1.2.0.1 remotes/origin/android-4.4w_r1 remotes/origin/android-5.0.0_r1 remotes/origin/android-5.0.0_r1.0.1 remotes/origin/android-5.0.0_r2 remotes/origin/android-5.0.0_r2.0.1 remotes/origin/android-5.0.0_r3 remotes/origin/android-5.0.0_r3.0.1 remotes/origin/android-5.0.0_r4 remotes/origin/android-5.0.0_r4.0.1 remotes/origin/android-5.0.0_r5 remotes/origin/android-5.0.0_r5.0.1 remotes/origin/android-5.0.0_r5.1 remotes/origin/android-5.0.0_r5.1.0.1 remotes/origin/android-5.0.0_r6 remotes/origin/android-5.0.0_r6.0.1 remotes/origin/android-5.0.0_r7 remotes/origin/android-5.0.0_r7.0.1 remotes/origin/android-5.0.1_r1 remotes/origin/android-5.0.2_r1 remotes/origin/android-5.0.2_r3 remotes/origin/android-5.1.0_r1 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remotes/origin/android-sdk-support_r11 remotes/origin/android-support-test remotes/origin/android-tsl-2.0 remotes/origin/android-wear-5.0.0_r1 remotes/origin/chromium-dev remotes/origin/droiddriver-dev remotes/origin/froyo remotes/origin/gingerbread remotes/origin/gingerbread-release remotes/origin/gradle-dev remotes/origin/gradle_0.12.2 remotes/origin/gradle_0.13.0 remotes/origin/gradle_0.13.1 remotes/origin/gradle_0.13.2 remotes/origin/gradle_0.13.3 remotes/origin/gradle_0.14.0 remotes/origin/gradle_0.14.1 remotes/origin/gradle_0.14.2 remotes/origin/gradle_0.14.3 remotes/origin/gradle_0.14.4 remotes/origin/gradle_1.0.0 remotes/origin/gradle_1.0.0-rc1 remotes/origin/gradle_1.0.0-rc2 remotes/origin/gradle_1.0.0-rc3 remotes/origin/gradle_1.0.0-rc4 remotes/origin/gradle_1.0.1 remotes/origin/gradle_1.1.0 remotes/origin/gradle_1.1.0-rc1 remotes/origin/gradle_1.1.0-rc2 remotes/origin/gradle_1.1.0-rc3 remotes/origin/gradle_1.1.1 remotes/origin/gradle_1.1.2 remotes/origin/gradle_1.1.3 remotes/origin/gradle_1.2.0 remotes/origin/gradle_1.2.0-beta1 remotes/origin/gradle_1.2.0-rc1 remotes/origin/gradle_1.2.1 remotes/origin/gradle_1.2.2 remotes/origin/gradle_1.2.3 remotes/origin/ics-mr0 remotes/origin/ics-mr1 remotes/origin/ics-plus-aosp remotes/origin/idea133 remotes/origin/idea133-weekly-release remotes/origin/jb-dev remotes/origin/jb-mr1-dev remotes/origin/jb-mr1-dev-plus-aosp remotes/origin/jb-mr1.1-dev remotes/origin/jb-mr1.1-dev-plus-aosp remotes/origin/jb-mr2-cts-dev remotes/origin/jb-mr2-dev remotes/origin/jumper-stable remotes/origin/kitkat-cts-dev remotes/origin/kitkat-dev remotes/origin/l-preview remotes/origin/lollipop-cts-dev remotes/origin/lollipop-dev remotes/origin/lollipop-mr1-cts-dev remotes/origin/lollipop-mr1-dev remotes/origin/master remotes/origin/master-art remotes/origin/master-art-host remotes/origin/master-dalvik remotes/origin/master-dalvik-host remotes/origin/master-soong remotes/origin/ref/for/master remotes/origin/studio-1.0-dev remotes/origin/studio-1.0-release remotes/origin/studio-1.1-dev remotes/origin/studio-1.1-release remotes/origin/studio-1.2-dev remotes/origin/studio-1.2-release remotes/origin/studio-1.3-dev remotes/origin/studio-1.3-release remotes/origin/studio-master-dev remotes/origin/studio-master-release remotes/origin/studio_0.8.6 remotes/origin/studio_1.0.0 remotes/origin/studio_1.0.1 remotes/origin/tools-canary-release remotes/origin/tools_ndk_r9d remotes/origin/tools_r20 remotes/origin/tools_r21 remotes/origin/tools_r21.1 remotes/origin/tools_r22 remotes/origin/tools_r22.2 remotes/origin/tools_r22.6 remotes/origin/tradefed remotes/origin/ub-emulator-master remotes/origin/ub-jack remotes/origin/ub-jack-arzon remotes/origin/ub-jack-arzon-mr2 remotes/origin/ub-jack-brest remotes/origin/ub-jack-lang-dev remotes/origin/ub-tools-idea133 remotes/origin/ub-tools-idea133-milestone remotes/origin/ub-tools-idea133-release remotes/origin/ub-tools-master remotes/origin/ub-webview-m40-release remotes/origin/upstream-mirror-lldb remotes/origin/webview-m40_r1 remotes/origin/webview-m40_r2 remotes/origin/webview-m40_r3 remotes/origin/webview-m40_r4
repo sync這樣就開始更新代碼啦，速度還不錯(cuò)。
如果你之前已經(jīng)通過某種途徑獲得了 AOSP 的源碼(或者你只是 init 這一步完成后)， 你希望以后通過 TUNA 同步 AOSP 部分的代碼，只需要將 .repo/manifest.xml 把其中的 aosp 這個(gè) remote 的 fetch 從 https://android.googlesource.com 改為 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"
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