commit | 5b045ba8b4a4b5f2d7d50d4e1b474bb08c5714b2 | [log] [tgz] |
---|---|---|
author | Treehugger Robot <treehugger-gerrit@google.com> | Mon Mar 15 15:04:57 2021 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Mon Mar 15 15:04:57 2021 +0000 |
tree | 6642b3157dcfe242c0509950156fce5d3604cd9f | |
parent | f0066e5dc30a967587fadbde8b581e680c83af47 [diff] | |
parent | 8947175b56b61d0dff2ff40fb362b78ad5647f1b [diff] |
Merge "Symlink .clang-format to build/soong/scripts/system-clang-format-2." am: 82b8ba5ca0 am: 8947175b56 Original change: https://android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/1635839 MUST ONLY BE SUBMITTED BY AUTOMERGER Change-Id: I20fe8d24dd0e0fe47dfc99303b8ac6d219959c13
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.