android 源码下载

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以下内容是从官网上直接复制粘贴，有可能出现连接不上

Installing Repo

Repo is a tool that makes it easier to work with Git in the context of Android. For more information about Repo, see theDeveloping section.

To install Repo:

Make sure you have a bin/ directory in your home directory and that it is included in your path:
```
$ mkdir ~/bin$ PATH=~/bin:$PATH
```

Download the Repo tool and ensure that it is executable:

$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo$ chmod a+x ~/bin/repo

For version 1.17, the SHA-1 checksum for repo is ddd79b6d5a7807e911b524cb223bc3544b661c28

For version 1.19, the SHA-1 checksum for repo is 92cbad8c880f697b58ed83e348d06619f8098e6c

For version 1.20, the SHA-1 checksum for repo is e197cb48ff4ddda4d11f23940d316e323b29671c

For version 1.21, the SHA-1 checksum for repo is b8bd1804f432ecf1bab730949c82b93b0fc5fede

For version 1.22, the SHA-1 checksum for repo is da0514e484f74648a890c0467d61ca415379f791

Initializing a Repo client

After installing Repo, set up your client to access the Android source repository:

Create an empty directory to hold your working files. If you're using MacOS, this has to be on a case-sensitive filesystem. Give it any name you like:
```
$ mkdir WORKING_DIRECTORY$ cd WORKING_DIRECTORY
```
Configure git with your real name and email address. To use the Gerrit code-review tool, you will need an email address that is connected with aregistered Google account. Make sure this is a live address at which you can receive messages. The name that you provide here will show up in attributions for your code submissions.
```
$ git config --global user.name "Your Name"$ git config --global user.email "you@example.com"
```
Run repo init to bring down the latest version of Repo with all its most recent bug fixes. You must specify a URL for the manifest, which specifies where the various repositories included in the Android source will be placed within your working directory.
```
$ repo init -u https://android.googlesource.com/platform/manifest
```
To check out a branch other than "master", specify it with -b. For a list of branches, seeSource Code Tags and Builds.
```
$ repo init -u https://android.googlesource.com/platform/manifest -b android-4.0.1_r1
```

A successful initialization will end with a message stating that Repo is initialized in your working directory. Your client directory should now contain a.repo directory where files such as the manifest will be kept.

Downloading the Android Source Tree

To pull down the Android source tree to your working directory from the repositories as specified in the default manifest, run

$ repo sync

The Android source files will be located in your working directory under their project names. The initial sync operation will take an hour or more to complete. For more aboutrepo sync and other Repo commands, see theDeveloping section.

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