commit | 2848c688082851186aaf3e77b4539bf51c0c71bd | [log] [tgz] |
---|---|---|
author | Anton Hansson <hansson@google.com> | Mon Mar 08 12:54:32 2021 +0000 |
committer | Anton Hansson <hansson@google.com> | Fri Mar 12 12:00:19 2021 +0000 |
tree | 010aa879a362b13dd2d5784de224a03ff662d5ad | |
parent | ffb7125d115c17f9e43a90731b47d57fc22a38df [diff] |
Fix typo in TEST_MAPPING Test: atest --test-mapping packages/modules/SdkExtensions Change-Id: Id54d23802ddce5e62389d5eadd95f6185dbfefa3
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.