The Android source is located in a collection of Git repositories hosted by Google. The Git repository includes the entire history of the Android source, including changes to the source and when the changes were made. This page describes how to download the source.
Initialize the Repo client
Set up your client to access the Android source repository:
Create and navigate to a working directory:
Initialize your working directory for source control:
repo init --partial-clone -b main -u https://android.googlesource.com/platform/manifest
option is used to identify the branch you are initializing. If -b isn't provided,repo init
defaults to the main branch. For a list of branches and tag names, see Source code tags and builds.The
option is required and is used to specify a manifest file, which is an XML file specifying where the various Git projects in the Android source are placed within your working directory. In this example, the name of the manifest file isn't specified, so the command uses the default manifest file (default.xml
).The output should contain the message:
repo has been initialized in path_to_working_directory
For information on manifest file format, see repo Manifest Format.
For a list of all Repo commands, see the Repo command reference.
Download the Android source
Run the following command to download the Android source tree to your working directory:
$ repo sync -c -j8
argument instructs Repo to fetch the current manifest branch from
the server. The -j8
command splits the sync across threads for faster
This operation should take a little over an hour.
If you run into any problems during download, refer to Troubleshoot and fix sync issues.
Download proprietary binaries
AOSP can run on Cuttlefish emulators directly, but AOSP can't be used on hardware without additional device-specific proprietary libraries. Here's how to obtain those device binaries:
- If you're downloading the
branch and building for a Nexus or Pixel device, download the latest binaries from the Binaries preview site. - If you're downloading and building the
branch and building for your own device, you must provide your device-specific binaries. - If you're downloading and building a tagged, non-main, branch and building for a Nexus or Pixel device, download the device-specific binary from Binaries for Nexus and Pixel devices.
Extract proprietary binaries
Each set of binaries comes as a self-extracting script in a compressed archive. To extract and place these binaries in the correct location of your source tree:
- Extract the archive.
- Run the included self-extracting shell script from the root of your AOSP source tree.
- Agree to the terms of the enclosed license agreement. The binaries and their
matching makefiles are installed in the
hierarchy of the source tree.
(optional) Verify code legitimacy
If you're concerned about the legitimacy of the source code, such as whether it came from Google, you can verify the git tags for the branch. To verify Git tags:
Copy and paste the following key block into a text file, such as
.-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v188.8.131.52 (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-----
Run the following command to input a public key into your GnuPG key database. The key is used to sign annotated tags that represent releases.
$ gpg --import keyfile.asc
After importing the keys, you can verify any tag by running this command:
$ git tag -v TAG_NAME