@HiltViewModel annotated ViewModel from a dependency cannot be instantiated in the app after obfuscation [400483862]

Assigned

Bug

Status Update

No update yet.

Description

te...@gmail.com

created issue #1

Mar 4, 2025 12:58PM

Android Gradle Plugin 8.8.2 Hilt/Dagger 2.55

It looks like R8 is optimizing the code of the library (external dependency) in the way which breaks Hilt compatibility. After investigation I found out that when library ViewModel class is obfuscated in the final app build then the key by which it's registered into hilt viewmodel map is not changed (still contains nonobfuscated class name). Having these options in library proguard rules:

-dontshrink
-dontobfuscate
-dontoptimize

does not help. However wverything works when library build has isMinifyEnabled is set to false

I'm attaching sample project which reproduces this issue.

Run gradlew :library:assembleRelease to build library aar
This aar is added as dependency to app module (not as a project() dependency but as aar)
Build the debug version of the app (isMinifyEnabled is set to true)
Open the app and click on "CLICK" button
App crashes due to:

                                         Process: com.example.myapplication, PID: 9291
                                         java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myapplication/com.example.myapplication.library.LibraryActivity}: java.lang.RuntimeException: Cannot create an instance of class c1.e
                                         	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3782)
                                         	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3922)
                                         	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
                                         	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:139)
                                         	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:96)
                                         	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2443)
                                         	at android.os.Handler.dispatchMessage(Handler.java:106)
                                         	at android.os.Looper.loopOnce(Looper.java:205)
                                         	at android.os.Looper.loop(Looper.java:294)
                                         	at android.app.ActivityThread.main(ActivityThread.java:8177)
                                         	at java.lang.reflect.Method.invoke(Native Method)
                                         	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
                                         	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)
                                         Caused by: java.lang.RuntimeException: Cannot create an instance of class c1.e
                                         	at androidx.lifecycle.P.a(SourceFile:80)
                                         	at androidx.lifecycle.N.d(SourceFile:117)
                                         	at androidx.lifecycle.N.a(SourceFile:5)
                                         	at androidx.lifecycle.N.c(SourceFile:5)
                                         	at androidx.lifecycle.H.c(SourceFile:64)
                                         	at h1.b.c(SourceFile:18)
                                         	at androidx.lifecycle.O.b(SourceFile:5)
                                         	at U0.c.a(SourceFile:110)
                                         	at androidx.lifecycle.M.getValue(SourceFile:48)
                                         	at com.example.myapplication.library.LibraryActivity.onCreate(SourceFile:6)
                                         	at android.app.Activity.performCreate(Activity.java:8595)
                                         	at android.app.Activity.performCreate(Activity.java:8573)
                                         	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1456)
                                         	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3764)
                                         	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3922) 
                                         	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103) 
                                         	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:139) 
                                         	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:96) 
                                         	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2443) 
                                         	at android.os.Handler.dispatchMessage(Handler.java:106) 
                                         	at android.os.Looper.loopOnce(Looper.java:205) 
                                         	at android.os.Looper.loop(Looper.java:294) 
                                         	at android.app.ActivityThread.main(ActivityThread.java:8177) 
                                         	at java.lang.reflect.Method.invoke(Native Method) 
                                         	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552) 
                                         	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971) 
                                         Caused by: java.lang.NoSuchMethodException: c1.e.<init> []
                                         	at java.lang.Class.getConstructor0(Class.java:3325)
                                         	at java.lang.Class.getDeclaredConstructor(Class.java:3063)
                                         	at androidx.lifecycle.P.a(SourceFile:6)
                                         	at androidx.lifecycle.N.d(SourceFile:117) 
                                         	at androidx.lifecycle.N.a(SourceFile:5) 
                                         	at androidx.lifecycle.N.c(SourceFile:5) 
                                         	at androidx.lifecycle.H.c(SourceFile:64) 
                                         	at h1.b.c(SourceFile:18) 
                                         	at androidx.lifecycle.O.b(SourceFile:5) 
                                         	at U0.c.a(SourceFile:110) 
                                         	at androidx.lifecycle.M.getValue(SourceFile:48) 
                                         	at com.example.myapplication.library.LibraryActivity.onCreate(SourceFile:6) 
                                         	at android.app.Activity.performCreate(Activity.java:8595) 
                                         	at android.app.Activity.performCreate(Activity.java:8573) 
                                         	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1456) 
                                         	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3764) 
                                         	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3922) 
                                         	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103) 
                                         	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:139) 
                                         	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:96) 
                                         	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2443) 
                                         	at android.os.Handler.dispatchMessage(Handler.java:106) 
                                         	at android.os.Looper.loopOnce(Looper.java:205) 
                                         	at android.os.Looper.loop(Looper.java:294) 
                                         	at android.app.ActivityThread.main(ActivityThread.java:8177) 
                                         	at java.lang.reflect.Method.invoke(Native Method) 
                                         	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552) 
                                         	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)

MyApplication2.zip

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Comments

ch...@google.com <ch...@google.com> Mar 4, 2025 01:04PM

Reassigned to ch...@google.com.

ch...@google.com <ch...@google.com> Mar 6, 2025 07:25AM

Reassigned to ri...@google.com.

ch...@google.com <ch...@google.com> Mar 6, 2025 08:57AM

Reassigned to ch...@google.com.

ch...@google.com <ch...@google.com> #2Mar 13, 2025 01:54PM

Information redacted by Android Beta Feedback.

ch...@google.com <ch...@google.com> #3Mar 13, 2025 02:07PM

also the navbar on this page is not transparent

ch...@google.com <ch...@google.com> #4Mar 14, 2025 08:25AM

We have passed this to the development team and will update this issue with more information as it becomes available.

Issue 400483862