commit | be5b70775a1c715d016a42fc9b304be6e30e3543 | [log] [tgz] |
---|---|---|
author | Bob Badour <bbadour@google.com> | Fri Feb 12 14:50:30 2021 -0800 |
committer | Bob Badour <bbadour@google.com> | Wed Feb 17 09:46:27 2021 -0800 |
tree | 6727a90e4dfb0917f9197713d046f60a37cbb4e4 | |
parent | 9faf8c5dd595c901ea83f0d7e721916fa0212df7 [diff] |
[LSC] Add LOCAL_LICENSE_KINDS to packages/modules/SdkExtensions Added SPDX-license-identifier-Apache-2.0 to: Android.bp derive_sdk/Android.bp framework/Android.bp gen_sdk/Android.bp proto/Android.bp testing/Android.bp tests/cts/Android.bp tests/e2e/Android.bp Bug: 68860345 Bug: 151177513 Bug: 151953481 Test: m all Exempt-From-Owner-Approval: janitorial work Change-Id: I5dedd80b6d3ba86549d0faacccb7f89a9ec4f752 Merged-in: If8ce8db8e24c89c40f222f2d7d0c0386226ff60d
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.