Getting Exception java.lang.NoClassDefFoundError: com.google.firebase.FirebaseOptions after updating to the new firebase

Question

I have updated my application to the new firebase using the this and now when i compile my project i get the following exception.

Here is my logcat:

Answer 1

try to solve...

in Gradle file

multiDexEnabled true

compile 'com.android.support:multidex:1.0.1'

Manifest file

application tag add this line

android:name="android.support.multidex.MultiDexApplication"

Answer 2

 GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(getString(**R.string.default_web_client_id**))
            .requestEmail()
            .build();

In my same case i changed requestIdToken and it worked.

Answer 3

Using latest Google Play services but was not working. For me this procedure is working:

1. Updated my Application class:

   public class App extends Application {
     @Override
     protected void attachBaseContext(Context base) {
       super.attachBaseContext(base);
       MultiDex.install(this);
    }
   }
   

2. Updated build.gradle file:

   defaultConfig {
       ...
       multiDexEnabled true
   }
   

3. Included dependencies:

   dependencies {
     compile 'com.android.support:multidex:1.0.0'
   }