Android App Bundle
Filename extension
.aab
Type of formatPackage format
Container forAndroid
Open format?yes
WebsiteOfficial website

Android App Bundle is the Android application publishing file format. The App Bundle must include the application's compiled code and resources, which allows for the signing and generation of APK files to be deferred to the app store, reducing the initial download size of the app.[1] The file extension used for this format is ".aab".[2]

The format has been required for all new Google Play apps since August 2021.[3]

Split APKs

Without Android App Bundles, an APK can support multiple languages, up to four different CPU architectures, and several display resolutions.[4] This meant that each installation file could contain potentially large amounts of amount of bloat irrelevant for a device's specific combination of CPU, locale, and screen size.[4]

Split APKs, which are generated by an app store like Google Play, contain only the code and resources that are needed for the specific device downloading the app.[5] If the user changes their device language or feature set, the app store can then deliver additional split APKs on demand to meet the changed requirements.[6]

Android App Bundles are required for using "play as you download" feature of Google Play, which lets users download and install a portion of the game to start playing and then download the rest while the user is occupied by first level.[7]

See also

References

  1. ^ "About Android App Bundles". Android Developers. Archived from the original on 2021-08-09. Retrieved 2021-08-15.
  2. ^ "bundletool". Android Developers. Retrieved 2021-10-19.
  3. ^ Peters, Jay (2021-06-30). "Google is moving away from APKs on the Play Store". The Verge. Archived from the original on 2021-08-04. Retrieved 2021-08-15.
  4. ^ a b Amadeo, Ron (2021-07-01). "Google Play dumps APKs for the more Google-controlled "Android App Bundle"". Ars Technica. Archived from the original on 2021-08-12. Retrieved 2021-08-15.
  5. ^ Tim Anderson. "Android devs prepare to hand over app-signing keys to Google from August". www.theregister.com. Archived from the original on 2021-07-24. Retrieved 2021-08-15.
  6. ^ Elliott, Dom (2020-11-23). "A new publishing format for the future of Android". Medium. Archived from the original on 2021-07-16. Retrieved 2021-08-15.
  7. ^ Amadeo, Ron (2021-11-15). "Android 12: The Ars Technica Review". Ars Technica. Retrieved 2021-11-21.