commit | d30218f3abb076f86da986997f836dd2954c597f | [log] [tgz] |
---|---|---|
author | Bob Badour <bbadour@google.com> | Thu Mar 18 23:07:46 2021 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Thu Mar 18 23:07:46 2021 +0000 |
tree | 6ff7baafba89f05f6a35f8ed3ef26127dd58c41e | |
parent | 4e2c0e793665d25712c4fa73c07adb0e83e45a09 [diff] | |
parent | 5fe185f451af2f0444abbd0460cfaab9f49d9164 [diff] |
[LSC] Add LOCAL_LICENSE_KINDS to packages/modules/SdkExtensions am: 36ade50bd2 am: 3cfaf3407d am: 5fe185f451 Original change: https://android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/1643244 Change-Id: I129788fb0de838b6ffc78a2ac5128fceaa100c05
SdkExtensions is a module that decides the extension SDK level of the device, and provides APIs for applications to query the extension SDK level.
The module is packaged in an apex, com.android.sdkext
, and has two components:
bin/derive_sdk
: Native binary that runs early in the device boot process and reads metadata of other modules, to set system properties relating to the extension SDK (for instance build.version.extensions.r
).javalib/framework-sdkextension.jar
: This is a jar on the bootclasspath that exposes APIs to applications to query the extension SDK level.derive_sdk
is a program that reads metadata stored in other apex modules, in the form of binary protobuf files in subpath etc/sdkinfo.binarypb
inside each apex. The structure of this protobuf can be seen here. The exact steps for converting a set of metadata files to actual extension versions is likely to change over time, and should not be depended upon.
The module exposes a java class SdkExtensions
in the package android.os.ext
. The method getExtensionVersion(int)
can be used to read the version of a particular sdk extension, e.g. getExtensionVersion(Build.VERSION_CODES.R)
.
For every new Android SDK level a new extension version should be defined. These are the steps necessary to do that:
derive_sdk.cpp
by:GetSdkLevel
with the new enum setderive_sdk_test.cpp
verifying the new extensions worksSdkExtensions.getExtensionVersion
API support the new extensions.RollbackManagerServiceImpl#getExtensionVersions
to account for the new extension version.