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ClassNotFoundException: com.auth0.android.lock

See original GitHub issue

Description

I was working on a new release when I noticed our lock login activity no longer loaded the email/password entry fields. It is just blank with the ability to toggle between log in and sign up but no thing in the content area above the submit button. (see screenshot)

The only error message I could find is the following one.

E/Parcel: Class not found when unmarshalling: com.auth0.android.lock.internal.configuration.Options
    java.lang.ClassNotFoundException: com.auth0.android.lock.internal.configuration.Options
        at java.lang.Class.classForName(Native Method)
        at java.lang.Class.forName(Class.java:453)
        at android.os.Parcel.readParcelableCreator(Parcel.java:2827)
        at android.os.Parcel.readParcelable(Parcel.java:2781)
        at android.os.Parcel.readValue(Parcel.java:2684)
        at android.os.Parcel.readArrayMapInternal(Parcel.java:3053)
        at android.os.BaseBundle.initializeFromParcelLocked(BaseBundle.java:288)
        at android.os.BaseBundle.unparcel(BaseBundle.java:232)
        at android.os.BaseBundle.getString(BaseBundle.java:1155)
        at android.content.Intent.getStringExtra(Intent.java:8111)
        at com.android.server.am.ActivityStarter.startActivity(ActivityStarter.java:724)
        at com.android.server.am.ActivityStarter.startActivity(ActivityStarter.java:662)
        at com.android.server.am.ActivityStarter.startActivityMayWait(ActivityStarter.java:1511)
        at com.android.server.am.ActivityStarter.execute(ActivityStarter.java:603)
        at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:6645)
        at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:6519)
        at com.android.server.am.ActivityManagerService.startActivity(ActivityManagerService.java:6510)
        at android.app.IActivityManager$Stub.onTransact$startActivity$(IActivityManager.java:10833)
        at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:111)
        at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:4126)
        at android.os.Binder.execTransact(Binder.java:739)
     Caused by: java.lang.ClassNotFoundException: com.auth0.android.lock.internal.configuration.Options
        at java.lang.Class.classForName(Native Method)
        at java.lang.BootClassLoader.findClass(ClassLoader.java:1346)
        at java.lang.BootClassLoader.loadClass(ClassLoader.java:1406)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        at java.lang.Class.classForName(Native Method) 
        at java.lang.Class.forName(Class.java:453) 
        at android.os.Parcel.readParcelableCreator(Parcel.java:2827) 
        at android.os.Parcel.readParcelable(Parcel.java:2781) 
        at android.os.Parcel.readValue(Parcel.java:2684) 
        at android.os.Parcel.readArrayMapInternal(Parcel.java:3053) 
        at android.os.BaseBundle.initializeFromParcelLocked(BaseBundle.java:288) 
        at android.os.BaseBundle.unparcel(BaseBundle.java:232) 
        at android.os.BaseBundle.getString(BaseBundle.java:1155) 
        at android.content.Intent.getStringExtra(Intent.java:8111) 
        at com.android.server.am.ActivityStarter.startActivity(ActivityStarter.java:724) 
        at com.android.server.am.ActivityStarter.startActivity(ActivityStarter.java:662) 
        at com.android.server.am.ActivityStarter.startActivityMayWait(ActivityStarter.java:1511) 
        at com.android.server.am.ActivityStarter.execute(ActivityStarter.java:603) 
        at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:6645) 
        at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:6519) 
        at com.android.server.am.ActivityManagerService.startActivity(ActivityManagerService.java:6510) 
        at android.app.IActivityManager$Stub.onTransact$startActivity$(IActivityManager.java:10833) 
        at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:111) 
        at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:4126) 
        at android.os.Binder.execTransact(Binder.java:739) 
     Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available

Reproduction

I hadn’t made very many changes so I reverted them one by one. This is what caused the problem for me.

Moving from 'com.google.android.material:material:1.0.0' to 'com.google.android.material:material:1.1.0'

Reverting to the 1.0.0 version has fixed the issue for me so I am still able to release our next version but I’m not sure what that would have to do with the issue I am seeing. Progaurd doesn’t seem to be the problem because it happens in debug builds without progaurd files.

I’m creating Lock this way and it has been working for a year or so now for many releases:

private fun createLock(): Lock {
        val account = Auth0(Auth0Constants.clientId, Auth0Constants.domain)
        account.isOIDCConformant = true
        return Lock.newBuilder(account, callback)
            //Customize Lock
            .withAudience(Auth0Constants.audience)
            .withScheme(Auth0Constants.scheme)
            .withScope(Auth0Constants.scope)
            .closable(true)
            .hideMainScreenTitle(true)
            .build(context)
    }