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

I solved by adding this and lowering the play-service dependancy to 8.4.0 compile 'com.google.android.gms:play-services:8.4.0'

    @Override
protected void attachBaseContext(Context newBase) {
    super.attachBaseContext(newBase);
    MultiDex.install(this);
}

and add the following to the manifest

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

Answer 2

I think I've found a solution for this issue at this answer, please give it a look and thank @Gabriele Mariotti, he wrote:

In your top-level build.gradle you have to add:

buildscript {
    // ...
    dependencies {
        // ...
        classpath 'com.google.gms:google-services:3.0.0'
    }
}

Then in your module build.gradle:

apply plugin: 'com.android.application'

android {
  // ...
}

dependencies {
  // ... 

}

// ADD THIS AT THE BOTTOM
apply plugin: 'com.google.gms.google-services'

Answer 3

Downgrade your dependency in build.gradle file:

from:

compile 'com.google.android.gms:play-services:9.4.0'

to:

compile 'com.google.android.gms:play-services:7.3.0'

This worked in my case, hope same for you.

Answer 4

Step1: Fix multidex

Application class:

public class StudyNApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        MultiDex.install(this);
    }
 }

Grade file

defaultConfig { 
...
multiDexEnabled true
}

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

Step2: Fix java.lang.NoClassDefFoundError: com.google.firebase.FirebaseOptions

Remove

compile 'com.google.android.gms:play-services:9.4.0'

Add two lib:

compile 'com.google.android.gms:play-services-maps:9.4.0'
compile 'com.google.android.gms:play-services-location:9.4.0'

It worked fine.

Answer 5

Don't forget it.

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

Answer 6

This worked for me:

1. If you haven't already, update your 'Google Play Services' to Revision 30 from Android SDK Manager > Extras.

2. And then add the line compile 'com.android.support:multidex:1.0.1' to your dependancies (or simply remove multiDexEnabled true if not required)

3. Add this attribute to the application tag in manifest: android:name="android.support.multidex.MultiDexApplication"
   If you already have a custom application class defined in Android Manifest, extend it from MultiDexApplication instead of Application

Hope it helped!