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Third Party Issue

Votes

0

Found in

2021.3.47f1

2022.3.54f1

6000.0.31f1

6000.1.0a8

Issue ID

UUM-90846

Regression

No

[Android] The APK is bloated after generating it with the Application Binary Split enabled when immediately before an APK was generated with Application Binary Split disabled

-

How to reproduce:
1. Open the “SimpleAPKObbBloat.zip“
2. Open the “SampleScene“
3. In the script “Assets/Editor/Test.cs” change the “arguments["outputPath"] =” path to the valid path in the macOS (For Windows skip this step)
4. Click on the “MyMenu/RunTest“ on the topbar
5. Navigate to the valid path on your macOS (for Windows: “C:\\apkobbtest
LocalBuild.apk“)
6. Observe the “LocalBuild.split.apk“ size

Expected result: The “LocalBuild.split.apk” size is not bloated and is around 40 MB
Actual result: The “LocalBuild.split.apk” size is around 700 MB.

Reproducible with: 2021.3.47f1, 2022.3.54f1, 6000.0.31f1, 6000.1.0a8

Reproducible environment: macOS 15.1.1 (Intel), Windows 10 Pro (22H2)
Not reproducible environment: No other environment tested

Workaround: Add

PlayerSettings.Android.useAPKExpansionFiles = true;
buildSettings.options |= BuildOptions.CleanBuildCache;

Notes:
- Note that the file size of 'LocalBuild.apk” file is around 700+ MB and the file size of “LocalBuild.split.apk” is also around that size as well but the size for “LocalBuild.split.apk” should be around 30+ MB because the contents have been moved to the OBB file
- Must have an Android module to reproduce
- After the workaround to reproduce the issue either un-zip the project again 

 

 

 

Clean build solves the issue, seems to be something like cache issue

Reproducible only when building APK/APK+OBB, AAB works fine

  1. Resolution Note:

    This problem is reproducible only if building development builds. When building release builds (where size really matters), everything is fine. The problem is not Unity specific, it's just the way how Gradle (or AGP) generates debug APK, most likely it tries to re-use previous APK if it exists.
    This problem can be reproduced in Android Studio using these steps:
    - create an empty project in Android Studio
    - copy some relatively large (~100Mb) zip file to app/src/main/assets/bin
    - build debug APK (app/build/outputs/apk/debug/app-debug.apk), it's size would be slightly larger than 100Mb
    - delete this zip file
    - build debug APK again, it's size would still be almost the same

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