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Generates huge APKs #10717

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Closed
Generates huge APKs#10717
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platform-androidAndroid applications specificallyt: gradle"flutter build" and "flutter run" on Android

Description

@kamathln
kamathln
opened on Jun 15, 2017

tl;dr

why package arm, x86 and x86_64 runtimes with each apk? Use this technique
https://developer.android.com/studio/build/configure-apk-splits.html

Brought down the apk size from 20m to 9m

The Long version:

Steps to Reproduce

Build the hello world sample.

Logs

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk$ ls -lh
total 44M
-rw-r--r-- 1 kamathln kamathln 22M Jun 11 16:59 app.apk
-rw-r--r-- 1 kamathln kamathln  40 Jun 11 16:59 app.apk.sha1
-rw-r--r-- 1 kamathln kamathln 22M Jun 11 16:59 app-debug.apk

Unzipping, I find this:

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk$ mkdir apkcontents
kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk$ cd apkcontents
kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents$ unzip ../app.apk 
Archive:  app.apk
  inflating: AndroidManifest.xml     
  inflating: META-INF/CERT.RSA       
  inflating: META-INF/CERT.SF        
  inflating: META-INF/MANIFEST.MF    
  inflating: assets/app.flx          
  inflating: assets/icudtl.dat       
  inflating: classes.dex             
  inflating: lib/armeabi-v7a/libflutter.so  
  inflating: lib/x86/libflutter.so   
  inflating: lib/x86_64/libflutter.so  
 extracting: res/mipmap-hdpi-v4/ic_launcher.png  
 extracting: res/mipmap-mdpi-v4/ic_launcher.png  
 extracting: res/mipmap-xhdpi-v4/ic_launcher.png  
 extracting: res/mipmap-xxhdpi-v4/ic_launcher.png  
 extracting: res/mipmap-xxxhdpi-v4/ic_launcher.png  
 extracting: resources.arsc

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents$ ls -l
total 132
-rw-rw-rw- 1 kamathln kamathln   2344 Dec 31  1979 AndroidManifest.xml
drwxr-xr-x 2 kamathln kamathln   4096 Jun 15 10:06 assets
-rw-r--r-- 1 kamathln kamathln 108516 Dec 31  1979 classes.dex
drwxr-xr-x 5 kamathln kamathln   4096 Jun 15 10:06 lib
drwxr-xr-x 2 kamathln kamathln   4096 Jun 15 10:06 META-INF
drwxr-xr-x 7 kamathln kamathln   4096 Jun 15 10:06 res
-rw-rw-rw- 1 kamathln kamathln   1156 Dec 31  1979 resources.arsc

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents$ cd lib

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents/lib$ ls -lh
total 12K
drwxr-xr-x 2 kamathln kamathln 4.0K Jun 15 10:06 armeabi-v7a
drwxr-xr-x 2 kamathln kamathln 4.0K Jun 15 10:06 x86
drwxr-xr-x 2 kamathln kamathln 4.0K Jun 15 10:06 x86_64

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents/lib$ cd x86

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents/lib/x86$ ls -lh
total 20M
-rw-r--r-- 1 kamathln kamathln 20M Dec 31  1979 libflutter.so
kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents/lib/x86$ cd ..

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents/lib$ cd x86_64/

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents/lib/x86_64$ ls -lh
total 21M
-rw-r--r-- 1 kamathln kamathln 21M Dec 31  1979 libflutter.so

As you can see, the x86, x86_64 and arm runtimes are all bundled with each apk.

I tried removing the x86 and x86_64 libraries and repackaged them. The apk size is now

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents/lib$ rm -fr x86 x86_64/

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk/apkcontents/lib$ cd ../..

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk$ zip new.apk apkcontents/ -r
updating: apkcontents/ (stored 0%)
  adding: apkcontents/lib/ (stored 0%)
  adding: apkcontents/lib/armeabi-v7a/ (stored 0%)
  adding: apkcontents/lib/armeabi-v7a/libflutter.so (deflated 62%)
  adding: apkcontents/res/ (stored 0%)
  adding: apkcontents/res/mipmap-xhdpi-v4/ (stored 0%)
  adding: apkcontents/res/mipmap-xhdpi-v4/ic_launcher.png (deflated 5%)
  adding: apkcontents/res/mipmap-xxxhdpi-v4/ (stored 0%)
  adding: apkcontents/res/mipmap-xxxhdpi-v4/ic_launcher.png (deflated 7%)
  adding: apkcontents/res/mipmap-mdpi-v4/ (stored 0%)
  adding: apkcontents/res/mipmap-mdpi-v4/ic_launcher.png (deflated 8%)
  adding: apkcontents/res/mipmap-xxhdpi-v4/ (stored 0%)
  adding: apkcontents/res/mipmap-xxhdpi-v4/ic_launcher.png (deflated 3%)
  adding: apkcontents/res/mipmap-hdpi-v4/ (stored 0%)
  adding: apkcontents/res/mipmap-hdpi-v4/ic_launcher.png (deflated 5%)
  adding: apkcontents/resources.arsc (deflated 76%)
  adding: apkcontents/classes.dex (deflated 61%)
  adding: apkcontents/META-INF/ (stored 0%)
  adding: apkcontents/META-INF/MANIFEST.MF (deflated 50%)
  adding: apkcontents/META-INF/CERT.RSA (deflated 12%)
  adding: apkcontents/META-INF/CERT.SF (deflated 50%)
  adding: apkcontents/assets/ (stored 0%)
  adding: apkcontents/assets/icudtl.dat (deflated 65%)
  adding: apkcontents/assets/app.flx (deflated 0%)
  adding: apkcontents/AndroidManifest.xml (deflated 63%)

kamathln@laxX550L:~/exp/android/fluttersamples/myapp/build/app/outputs/apk$ ls -lh new.apk
-rw-r--r-- 1 kamathln kamathln 8.7M Jun 15 10:12 new.apk

Flutter Doctor

[✓] Flutter (on Linux, locale en_IN, channel alpha)
    • Flutter at /opt/apps/flutter
    • Framework revision e2f54df5ab (12 days ago), 2017-06-02 10:43:54 -0700
    • Engine revision 1f2aa07571
    • Tools Dart version 1.24.0-dev.3.0

[✓] Android toolchain - develop for Android devices (Android SDK 25.0.3)
    • Android SDK at /home/kamathln/.buildozer/android/platform/android-sdk-20
    • Platform android-25, build-tools 25.0.3
    • ANDROID_HOME = /home/kamathln/.buildozer/android/platform/android-sdk-20
    • Java binary at: /opt/apps/android-studio/jre/bin/java
    • Java version: OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] Android Studio (version 2.3)
    • Android Studio at /opt/apps/android-studio
    • Gradle version 3.2
    • Java version: OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] Connected devices
    • ASUS Z010D • ********* • android-arm • Android 6.0.1 (API 23)

Activity

  1. kamathln commented on Jun 15, 2017

    @kamathln
    kamathln
    on Jun 15, 2017
    Author

    This may help in pushing the right apk to the phone :

    $ adb shell getprop |grep 'cpu.abi'
[ro.product.cpu.abi]: [arm64-v8a]
[ro.product.cpu.abilist]: [arm64-v8a,armeabi-v7a,armeabi]
[ro.product.cpu.abilist32]: [armeabi-v7a,armeabi]
[ro.product.cpu.abilist64]: [arm64-v8a]
  2. eseidelGoogle
    added
    t: gradle"flutter build" and "flutter run" on Android
    platform-androidAndroid applications specifically
    on Jun 15, 2017

  3. Hixie commented on Jun 15, 2017

    @Hixie
    Hixie
    on Jun 15, 2017
    Contributor

    Is this for release builds or debug builds?

  4. kamathln commented on Jun 15, 2017

    @kamathln
    kamathln
    on Jun 15, 2017
    Author

    I uncompressed app.apk and not the app-debug.apk . If that is what you mean. Or is there yet another release mechanism in flutter that I am not aware of?

  5. kamathln commented on Jun 15, 2017

    @kamathln
    kamathln
    on Jun 15, 2017
    Author

    Ok, My bad I come from the land of kivy-python and assumed it would be same here.
    I learnt that flutter build does things differently, and packages a relatively leaner ~7mb library.

    But, I now notice that it now packs only the armeabi-v7a and none other. So my suggestion still holds.
    using https://developer.android.com/studio/build/configure-apk-splits.html , you can generate all different apks.

  6. sethladd commented on Jun 15, 2017

    @sethladd
    sethladd
    on Jun 15, 2017
    Contributor

    Would you mind opening a new issue for support apk splits?

  7. kamathln commented on Jun 15, 2017

    @kamathln
    kamathln
    on Jun 15, 2017 via email
    Author

  8. kamathln commented on Jun 15, 2017

    @kamathln
    kamathln
    on Jun 15, 2017
    Author

    Opened #10728

  9. kamathln
    closed this as completedon Jun 19, 2017

  10. github-actions commented on Sep 4, 2021

    @github-actions
    github-actionsbot
    on Sep 4, 2021

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  11. github-actions
    locked as resolved and limited conversation to collaborators on Sep 4, 2021
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