@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

112 KB

Download

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

I just attached a minimal test application with duplicated and multiline traces. Provided are a couple of logcat files and screenshots.

To me this isn'r really a big problem, since AS compiles my application and lets me debug it. That's what I use it for in my company. I just found it a bit annoying that something that worked one way in AS 2.x and 3.0, suddenly changed in 3.1. The new way results more time-consuming to me while debugging and reviewing the logs.

Could this be made configurable? Not necessarily in the UI, but editing some properties file. Thanks. :)

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

I have the same problem.

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

I also have the same problem.

Issue 400483862