Error java.lang.ClassNotFoundException: at dalvik.system.BaseDexClassLoader.findClass (BaseDexClassLoader.java:196)

XamDev 1

Hi,

I am using xamain.forms and getting this error message in crash report of android.

java.lang.RuntimeException:
at android.app.ActivityThread.handleReceiver (ActivityThread.java:4200)
at android.app.ActivityThread.access$1700 (ActivityThread.java:274)
at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2113)
at android.os.Handler.dispatchMessage (Handler.java:107)
at android.os.Looper.loop (Looper.java:237)
at android.app.ActivityThread.main (ActivityThread.java:8167)
at java.lang.reflect.Method.invoke (Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:496)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1100)
Caused by: java.lang.ClassNotFoundException:
at dalvik.system.BaseDexClassLoader.findClass (BaseDexClassLoader.java:196)
at java.lang.ClassLoader.loadClass (ClassLoader.java:379)
at java.lang.ClassLoader.loadClass (ClassLoader.java:312)
at android.app.AppComponentFactory.instantiateReceiver (AppComponentFactory.java:110)
at android.support.v4.app.CoreComponentFactory.instantiateReceiver (Unknown Source)
at android.app.ActivityThread.handleReceiver (ActivityThread.java:4193)

I am using r8 code shrinker. I have these -keep lines class com.google.android.gms.** { *; }
-dontwarn com.google.android.gms.** in r8.cfg but the error is still there

Leon Lu (Shanghai Wicresoft Co,.Ltd.) 68,741 Reputation points Microsoft Vendor

2021-03-09T14:42:30.22+00:00

Could you share the Linker selection? If you set the Linker to None. When you debug your application, does it worked as normal?
XamDev 1 Reputation point

2021-03-09T16:03:41.863+00:00

Hi,

I never experienced this error during debug or in the released version but this error logged in the Google Play Console's crash report.
Leon Lu (Shanghai Wicresoft Co,.Ltd.) 68,741 Reputation points Microsoft Vendor

2021-03-11T07:42:51.767+00:00

If you build and release your application do not have this issue, this error logged in the Google Play Console's crash report. You can open a thread in the Google play community or contact google supporter. If it needs to enable Multi-Dex.
Leon Lu (Shanghai Wicresoft Co,.Ltd.) 68,741 Reputation points Microsoft Vendor

2021-03-12T07:28:54.537+00:00

Could you create an android emulator, un-select the Google Play Services/Google Play Store installed like following screenshot?

Then re-deploy your application to this emulator, if you can get the same error.
XamDev 1 Reputation point

2021-03-12T10:04:25.85+00:00

I normally use physical phone for debugging and its got play store etc.

Thanks
Leon Lu (Shanghai Wicresoft Co,.Ltd.) 68,741 Reputation points Microsoft Vendor

2021-03-15T08:45:49.35+00:00

If you set the linker to none, then you can make a test.
Zola 1 Reputation point

2021-06-06T19:59:24.913+00:00

Did you manage to fix it? currently experiencing the same issue
XamDev 1 Reputation point

2021-06-08T09:16:39.513+00:00

I have tried everything but still no luck. Please let me know if you will find the fix for this problem.

thanks