Downloading the Source Tree

Installing Repo

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

To install, initialize, and configure Repo, follow these steps:

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 script and ensure it is executable:

$ curl http://android.git.kernel.org/repo > ~/bin/repo$ chmod a+x ~/bin/repo

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:
```
$ mkdir WORKING_DIRECTORY$ cd WORKING_DIRECTORY
```
Runrepo initto 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 git://android.git.kernel.org/platform/manifest.git
```
To check out a branch other than "master", specify it with -b:
```
$ repo init -u git://android.git.kernel.org/platform/manifest.git -b froyo
```
When prompted, please configure Repo 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.

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

Getting the files

To pull down files 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 several minutes to complete. For more aboutrepo syncand other Repo commands, seeVersion Control.

Verifying Git Tags

Load the following public key into your GnuPG key database. The key is used to sign annotated tags that represent releases.

$ gpg --import

Copy and paste the key(s) below, then enter EOF (Ctrl-D) to end the input and process the keys.

    -----BEGIN PGP PUBLIC KEY BLOCK-----    Version: GnuPG v1.4.2.2 (GNU/Linux)      mQGiBEnnWD4RBACt9/h4v9xnnGDou13y3dvOx6/t43LPPIxeJ8eX9WB+8LLuROSV    lFhpHawsVAcFlmi7f7jdSRF+OvtZL9ShPKdLfwBJMNkU66/TZmPewS4m782ndtw7    8tR1cXb197Ob8kOfQB3A9yk2XZ4ei4ZC3i6wVdqHLRxABdncwu5hOF9KXwCgkxMD    u4PVgChaAJzTYJ1EG+UYBIUEAJmfearb0qRAN7dEoff0FeXsEaUA6U90sEoVks0Z    wNj96SA8BL+a1OoEUUfpMhiHyLuQSftxisJxTh+2QclzDviDyaTrkANjdYY7p2cq    /HMdOY7LJlHaqtXmZxXjjtw5Uc2QG8UY8aziU3IE9nTjSwCXeJnuyvoizl9/I1S5    jU5SA/9WwIps4SC84ielIXiGWEqq6i6/sk4I9q1YemZF2XVVKnmI1F4iCMtNKsR4    MGSa1gA8s4iQbsKNWPgp7M3a51JCVCu6l/8zTpA+uUGapw4tWCp4o0dpIvDPBEa9    b/aF/ygcR8mh5hgUfpF9IpXdknOsbKCvM9lSSfRciETykZc4wrRCVGhlIEFuZHJv    aWQgT3BlbiBTb3VyY2UgUHJvamVjdCA8aW5pdGlhbC1jb250cmlidXRpb25AYW5k    cm9pZC5jb20+iGAEExECACAFAknnWD4CGwMGCwkIBwMCBBUCCAMEFgIDAQIeAQIX    gAAKCRDorT+BmrEOeNr+AJ42Xy6tEW7r3KzrJxnRX8mij9z8tgCdFfQYiHpYngkI    2t09Ed+9Bm4gmEO5Ag0ESedYRBAIAKVW1JcMBWvV/0Bo9WiByJ9WJ5swMN36/vAl    QN4mWRhfzDOk/Rosdb0csAO/l8Kz0gKQPOfObtyYjvI8JMC3rmi+LIvSUT9806Up    hisyEmmHv6U8gUb/xHLIanXGxwhYzjgeuAXVCsv+EvoPIHbY4L/KvP5x+oCJIDbk    C2b1TvVk9PryzmE4BPIQL/NtgR1oLWm/uWR9zRUFtBnE411aMAN3qnAHBBMZzKMX    LWBGWE0znfRrnczI5p49i2YZJAjyX1P2WzmScK49CV82dzLo71MnrF6fj+Udtb5+    OgTg7Cow+8PRaTkJEW5Y2JIZpnRUq0CYxAmHYX79EMKHDSThf/8AAwUIAJPWsB/M    pK+KMs/s3r6nJrnYLTfdZhtmQXimpoDMJg1zxmL8UfNUKiQZ6esoAWtDgpqt7Y7s    KZ8laHRARonte394hidZzM5nb6hQvpPjt2OlPRsyqVxw4c/KsjADtAuKW9/d8phb    N8bTyOJo856qg4oOEzKG9eeF7oaZTYBy33BTL0408sEBxiMior6b8LrZrAhkqDjA    vUXRwm/fFKgpsOysxC6xi553CxBUCH2omNV6Ka1LNMwzSp9ILz8jEGqmUtkBszwo    G1S8fXgE0Lq3cdDM/GJ4QXP/p6LiwNF99faDMTV3+2SAOGvytOX6KjKVzKOSsfJQ    hN0DlsIw8hqJc0WISQQYEQIACQUCSedYRAIbDAAKCRDorT+BmrEOeCUOAJ9qmR0l    EXzeoxcdoafxqf6gZlJZlACgkWF7wi2YLW3Oa+jv2QSTlrx4KLM=    =Wi5D     -----END PGP PUBLIC KEY BLOCK-----

After importing the keys, you can verify any tag with

$ git tag -v TAG_NAME

Next: Build the code

You now have a complete local copy of the Android codebase. Continue on tobuilding....

Ubuntu下下载Android(安卓)源码（来自官网）

Downloading the Source Tree

Installing Repo

Initializing a Repo client

Getting the files

Verifying Git Tags

Next: Build the code

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Ubuntu下 下载Android(安卓)源码（来自官网）

Downloading the Source Tree

Installing Repo

Initializing a Repo client

Getting the files

Verifying Git Tags

Next: Build the code

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Ubuntu下下载Android(安卓)源码（来自官网）