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[Android] Add support for split build per architecture #5160

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[Android] Add support for split build per architecture #5160

wants to merge 1 commit into from

Commits on Jan 7, 2016

  1. [Android] Add support for split build per architecture 

    This allows everyone to deploy significantly smaller APKs
by building separate APKs for ARM, x86 architectures.

For a simple app, Both ARM, x86 APKs are about 4MB which is
about 50% reduction compared to the universal APK.

Test Plan:

Created a sample project, uncommented `// include "armeabi-v7a", 'x86'`.

    cd android
    ./gradlew assembleDebug

Three APKs were created, unzipped each: one has only x86 binaries,
one has ARM binaries, one has both.

    ./gradlew assembleRelease

Three APKs were created, JS bundle is correcly added to assets.

    react-native run-android

The correct APK is installed on the emulator and the app runs
(Gradle output: "Installing APK 'app-x86-debug.apk'").

With the line commented out the behavior is exactly the same as before,
only one universal APK is built.

Checked that version codes are set correctly as decribed in
http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
http://developer.android.com/intl/ru/google/play/publishing/multiple-apks.html

    aapt l -a ../android/app/build/outputs/apk/app-armeabi-v7a-debug.apk | grep android:version
        A: android:versionCode(0x0101021b)=(type 0x10)0x100001
        A: android:versionName(0x0101021c)="1.0" (Raw: "1.0")

    aapt l -a ../android/app/build/outputs/apk/app-x86-debug.apk | grep android:version
        A: android:versionCode(0x0101021b)=(type 0x10)0x200001
        A: android:versionName(0x0101021c)="1.0" (Raw: "1.0")

    aapt l -a ../android/app/build/outputs/apk/app-universal-debug.apk | grep android:version
        A: android:versionCode(0x0101021b)=(type 0x10)0x1
        A: android:versionName(0x0101021c)="1.0" (Raw: "1.0")
    Martin Konicek committed Jan 7, 2016
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