| commit | d7cdc5e8ba6423713af770448efc01d9113f1694 | [log] [tgz] |
|---|---|---|
| author | Xin Li <delphij@google.com> | Fri Oct 09 02:24:22 2020 +0000 |
| committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Fri Oct 09 02:24:22 2020 +0000 |
| tree | c6f284e1486e1907b84c607dbd0e3ef3e4f3244e | |
| parent | 98e7f267b1a3bb538d221c818abf022208d08952 [diff] | |
| parent | 4b6831e1f2ab2e7e1b258a5d7f25a2533d63c4d4 [diff] |
[automerger skipped] Skip ab/6749736 in stage. am: 4b6831e1f2 -s ours am skip reason: Change-Id I64d70eabe501f590752029398843d0d5d71585be with SHA-1 6a22e3db29 is in history Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/12797501 Change-Id: I39b771760e6bd182c57719f834a2102b8ea6bae1
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).