After setting the minifyEnabled as true I'm getting the following error

Question

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: in.pharmaz.partner, PID: 26775
    java.lang.RuntimeException: Unable to start activity ComponentInfo{in.pharmaz.partner/in.pharmaz.partner.SplashScreenActivity}: java.lang.ClassCastException: com.google.android.gms.internal.zzald cannot be cast to com.google.firebase.auth.UserInfo
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
        at android.app.ActivityThread.-wrap11(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5417)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
    Caused by: java.lang.ClassCastException: com.google.android.gms.internal.zzald cannot be cast to com.google.firebase.auth.UserInfo
        at com.google.android.gms.internal.zzadh.zzN(Unknown Source)
        at com.google.firebase.auth.FirebaseAuth.zza(Unknown Source)
        at com.google.firebase.auth.FirebaseAuth.zzOj(Unknown Source)
        at com.google.firebase.auth.FirebaseAuth.<init>(Unknown Source)
        at com.google.firebase.auth.FirebaseAuth.<init>(Unknown Source)
        at com.google.android.gms.internal.zzadg.<init>(Unknown Source)
        at com.google.firebase.auth.FirebaseAuth.zzc(Unknown Source)
        at com.google.firebase.auth.FirebaseAuth.zzb(Unknown Source)
        at com.google.firebase.auth.FirebaseAuth.getInstance(Unknown Source)
        at in.pharmaz.partner.SplashScreenActivity.onCreate(SplashScreenActivity.java:38)
        at android.app.Activity.performCreate(Activity.java:6251)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
        at android.app.ActivityThread.-wrap11(ActivityThread.java) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5417) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

The SplashScreenActivity line number 38 is:

firebaseAuth = FirebaseAuth.getInstance();

My ProGuard rules contain:

-keep class com.google.** {*;}

I tried searching everywhere, found nothing.

My build.gradle:

 buildTypes {
    release {
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        signingConfig signingConfigs.config
        proguardFile 'C:/Users/vikas/Desktop/phzVendor/phzandvendor/app/proguard-rules.pro'
    }
    debug {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        debuggable true
        signingConfig signingConfigs.config
        proguardFile 'C:/Users/vikas/Desktop/phzVendor/phzandvendor/app/proguard-rules.pro'
    }
}

main exception is - java.lang.ClassCastException: com.google.android.gms.internal.zzald cannot be cast to com.google.firebase.auth.UserInfo — Nancy thakkar, Aug 23 '16 at 10:36
I know it, but the thing is its working when minifyEnabled is false. I think proguard is obfuscating something, which is leading this error. I dont know what rules i have to write to avoid that. — Vikash Kumar, Aug 23 '16 at 10:38
Yes See here same http://stackoverflow.com/questions/38883160/firebaseauth-classcastexception — Nancy thakkar, Aug 23 '16 at 10:43
Thanks! It Worked. I added -keepattributes Signature in proguard rules file. — Vikash Kumar, Aug 23 '16 at 10:53

score 3 · Answer 1 · edited May 23 '17 at 12:08

3

Whe you set minifyEnabled as true it means proguard start works. You need to provide proper proguard configs for each lib and the app.

For the firebase you could find configs here or in official docs

And here is a project that collects many usefull snippets for proguard config.

edited May 23 '17 at 12:08

Community

1
1

answered Aug 23 '16 at 10:52

dilix

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After setting the minifyEnabled as true I'm getting the following error

1 Answers1