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android_frameworks_base/tools/aapt2/readme.md
Adam Lesinski 86d67df8d5 AAPT2: Support CtsContentTestCases build 
- Add <feature-group> to ManifestFixer.
- Support <meta-data> in <instrumentation>
- Add support for <bag> and type="configVarying". Some CTS tests use this
  old notation, we need to support it (even though configVarying isn't
  anything supported by the framework convention).

Change-Id: I6946fa633ce513ea8437c1496db883cf27dcf6de
Test: make aapt2_tests
2017-02-01 15:28:23 -08:00

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Android Asset Packaging Tool 2.0 (AAPT2) release notes

Version 2.6

aapt2

  • Support legacy configVarying resource type.
  • Support <bag> tag and treat as <style> regardless of type.
  • Add <feature-group> manifest tag verification.
  • Add <meta-data> tag support to <instrumentation>.

Version 2.5

aapt2 link ...

  • Transition XML versioning: Adds a new flag --no-version-transitions to disable automatic versioning of Transition XML resources.

Version 2.4

aapt2 link ...

  • Supports <meta-data> tags in <manifest>.

Version 2.3

aapt2

  • Support new font resource type.

Version 2.2

aapt2 compile ...

aapt link ...

  • Duplicate resource filtering: removes duplicate resources in dominated configurations that are always identical when selected at runtime. This can be disabled with --no-resource-deduping.

Version 2.1

aapt2 link ...

  • Configuration Split APK support: supports splitting resources that match a set of configurations to a separate APK which can be loaded alongside the base APK on API 21+ devices. This is done using the flag --split path/to/split.apk:<config1>[,<config2>,...].
  • SDK version resource filtering: Resources with an SDK version qualifier that is unreachable at runtime due to the minimum SDK level declared by the AndroidManifest.xml are stripped.

Version 2.0

aapt2 compile ...

  • Pseudo-localization: generates pseudolocalized versions of default strings when the --pseudo-localize option is specified.
  • Legacy mode: treats some class of errors as warnings in order to be more compatible with AAPT when --legacy is specified.
  • Compile directory: treats the input file as a directory when --dir is specified. This will emit a zip of compiled files, one for each file in the directory. The directory must follow the Android resource directory structure (res/values-[qualifiers]/file.ext).

aapt2 link ...

  • Automatic attribute versioning: adds version qualifiers to resources that use attributes introduced in a later SDK level. This can be disabled with --no-auto-version.
  • Min SDK resource filtering: removes resources that can't possibly be selected at runtime due to the application's minimum supported SDK level.