Slide 1
Slide 1 text
No content
Slide 2
Slide 2 text
Agenda
Slide 3
Slide 3 text
Agenda
› AppBundle
Slide 4
Slide 4 text
Agenda
› AppBundle
› Universal APK
Slide 5
Slide 5 text
Agenda
› AppBundle
› Universal APK
› LINE Android CI Systems
Slide 6
Slide 6 text
Agenda
› AppBundle
› Universal APK
› LINE Android CI Systems
› AGP bugs related Aab
Slide 7
Slide 7 text
Agenda
› AppBundle
› Universal APK
› LINE Android CI Systems
› AGP bugs related Aab
› How to solve these issues
Slide 8
Slide 8 text
AppBundle
Slide 9
Slide 9 text
AppBundle
Upload format on Google Play Store
› Google Play converts optimized “Split Apk” for devices by configuration and dynamic features
› Cannot installable on devices
Slide 10
Slide 10 text
AppBundle
› Recommended to use latest AGP version
Requires Android Gradle Plugin 3.2 or higher
Upload format on Google Play Store
› Google Play converts optimized “Split Apk” for devices by configuration and dynamic features
› Cannot installable on devices
Slide 11
Slide 11 text
AppBundle
› Recommended to use latest AGP version
Requires Android Gradle Plugin 3.2 or higher
Inconvenient use for in-house distribution
› LINE Android team uses “Universal APK” to distribute in-house
Upload format on Google Play Store
› Google Play converts optimized “Split Apk” for devices by configuration and dynamic features
› Cannot installable on devices
Slide 12
Slide 12 text
Universal APK
Slide 13
Slide 13 text
Universal APK
› Google Play is no longer required for distribution.
› Can distribute installable with single file.
Pros
Slide 14
Slide 14 text
Universal APK
› Google Play is no longer required for distribution.
› Can distribute installable with single file.
Pros
Cons
› Cannot determine real distribution size.
› Minor settings can be differ with real distribution
› ABI
› Compression Level
Slide 15
Slide 15 text
Universal APK
› Google Play is no longer required for distribution.
› Can distribute installable with single file.
Pros
Cons
› Cannot determine real distribution size.
› Minor settings can be differ with real distribution
› ABI
› Compression Level
How to build universal apk (without bundletool)
› $ ./gradlew :app:packageDebugUniversalApk
› $ ls app/build/outputs/universal_apk/debug
› app-debug-universal.apk
Slide 16
Slide 16 text
LINE Android CI Systems
› App packaging
› Deploy Universal Apk on In-House repository for Pre-QA, QA team
› Deploy AppBundle on Google Play for Dogfooding, Alpha and Production
Release Pipeline
Pull Request Checkers
› App packaging : Universal App, AppBundle
› UnitTest based Robolectric
› Code formatter / Lint Checker
› Etc…
Slide 17
Slide 17 text
Changes of LINE Android CI System
Slide 18
Slide 18 text
Changes of LINE Android CI System
1BDLBHJOH 6OJU5FTU -JOU
Slide 19
Slide 19 text
Changes of LINE Android CI System
1BDLBHJOH 6OJU5FTU -JOU
"QL BQQBTTFNCMF%FCVH BQQUFTU%FCVH6OJU5FTU BQQMJOU%FCVH
Slide 20
Slide 20 text
Changes of LINE Android CI System
1BDLBHJOH 6OJU5FTU -JOU
"QL BQQBTTFNCMF%FCVH BQQUFTU%FCVH6OJU5FTU BQQMJOU%FCVH
"QQ#VOEMF
BQQCVOEMF%FCVH
BQQQBDLBHF%FCVH6OJWFSTBM"QL
BQQUFTU%FCVH6OJU5FTU
GFBUVSFUFTU%FCVH6OJU5FTU
GFBUVSFUFTU%FCVH6OJU5FTU
ʜ
BQQMJOU%FCVH
TJODF"(1
Slide 21
Slide 21 text
Issues related with Universal App
> Task :app:packageDebugUniversalApk FAILED
Error: Program type already present: $r8$backportedMethods$utility$Long$1$hashCode
› https://issuetracker.google.com/issues/146265847
AGP 3.6
AGP 3.4, 3.5
> Task :app:packageDebugUniversalApk FAILED
Error: Program type already present: $r8$java8methods$utility$Long$hashCode$IJ
› https://issuetracker.google.com/issues/139993729
Slide 22
Slide 22 text
Issues related with Universal App
> Task :app:packageDebugUniversalApk FAILED
Error: Program type already present: $r8$backportedMethods$utility$Long$1$hashCode
› https://issuetracker.google.com/issues/146265847
AGP 3.6
AGP 3.4, 3.5
> Task :app:packageDebugUniversalApk FAILED
Error: Program type already present: $r8$java8methods$utility$Long$hashCode$IJ
› https://issuetracker.google.com/issues/139993729
Slide 23
Slide 23 text
Issues related with Universal App
> Task :app:packageDebugUniversalApk FAILED
Error: Program type already present: $r8$backportedMethods$utility$Long$1$hashCode
› https://issuetracker.google.com/issues/146265847
AGP 3.6
AGP 3.4, 3.5
> Task :app:packageDebugUniversalApk FAILED
Error: Program type already present: $r8$java8methods$utility$Long$hashCode$IJ
› https://issuetracker.google.com/issues/139993729
Slide 24
Slide 24 text
Solution: Use latest bundle tool
build.gradle.kts
Slide 25
Slide 25 text
Solution: Use latest bundle tool
build.gradle.kts
Slide 26
Slide 26 text
Solution: Use latest bundle tool
build.gradle.kts
Slide 27
Slide 27 text
Issues related with UnitTest
AGP 3.2 ~ AGP 4.0
› Cannot perform robolectric tests for Dynamic Feature by ClassLoader failure
> Task :dynamicfeature:testDebugUnitTest FAILED
com.bugexample.dynamicfeature.FeatureModuleDataHelperTest > Fails at runtime
with NoClassDefFoundError when running testDebugUnitTest FAILED
java.lang.NoClassDefFoundError at FeatureModuleDataHelperTest.kt:11
Caused by: java.lang.ClassNotFoundException at
FeatureModuleDataHelperTest.kt:11
› https://issuetracker.google.com/issues/123441249
Slide 28
Slide 28 text
Issues related with UnitTest
AGP 3.2 ~ AGP 4.0
› Cannot perform robolectric tests for Dynamic Feature by ClassLoader failure
> Task :dynamicfeature:testDebugUnitTest FAILED
com.bugexample.dynamicfeature.FeatureModuleDataHelperTest > Fails at runtime
with NoClassDefFoundError when running testDebugUnitTest FAILED
java.lang.NoClassDefFoundError at FeatureModuleDataHelperTest.kt:11
Caused by: java.lang.ClassNotFoundException at
FeatureModuleDataHelperTest.kt:11
› https://issuetracker.google.com/issues/123441249
Slide 29
Slide 29 text
Solution: Add dependencies explicitly
Slide 30
Slide 30 text
Conclusion
Slide 31
Slide 31 text
Conclusion
› There are several bugs related with AppBundle in build tools.
› CI System has a variety of requirements that Google did not expect.
Slide 32
Slide 32 text
Conclusion
› Search your issue on AOSP issue tracker(http://b.android.com), and give ⭐
› If there is no issue you have, please submit and share.
› There are several bugs related with AppBundle in build tools.
› CI System has a variety of requirements that Google did not expect.
Slide 33
Slide 33 text
Conclusion
› Search your issue on AOSP issue tracker(http://b.android.com), and give ⭐
› If there is no issue you have, please submit and share.
› Collaborate with Googler to fix bugs
› Provide MWE(Minimal Working Example)
› Also most source codes of AGP are opened, and we can find out the cause of the problem.
› There are several bugs related with AppBundle in build tools.
› CI System has a variety of requirements that Google did not expect.
Slide 34
Slide 34 text
See also
Slide 35
Slide 35 text
See also
› Best Practices for a modularized app with dynamic features by Leo Chu
Slide 36
Slide 36 text
See also
› References from android developer documentations
› About Android App Bundles : https://d.android.com/guide/app-bundle
› bundletool : https://d.android.com/studio/command-line/bundletool
› Best Practices for a modularized app with dynamic features by Leo Chu
Slide 37
Slide 37 text
See also
› References from android developer documentations
› About Android App Bundles : https://d.android.com/guide/app-bundle
› bundletool : https://d.android.com/studio/command-line/bundletool
› AOSP Issue tracker
› appbundle
› Android Gradle Plugin
› Best Practices for a modularized app with dynamic features by Leo Chu
Slide 38
Slide 38 text
Thank you