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

Question

I was getting this weird error on my google developer console. So i used google Cloud Test Lab to See whats really happening. turns out my app is failing on almost all devic

Answer 1

You'd try following Code snippet:

defaultConfig { 
    multiDexEnabled true
}

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

public class Controller extends Application {

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

Answer 2

Turns out my usage of MultiDex was wrong and that causes this error. This should have really been mentioned in the official documentation somewhere.

---

How to do it the right way :

In Gradle.build (app level)

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

In the Manifest, add

<application
        android:name=".Global"
...

In the Application class,

public class Global extends MultiDexApplication {
...
}

Answer 3

If this can help other I solved this using this, although this is nowhere linked with Firebase but it actually solved my crash

1. Add compile 'com.android.support:multidex:1.0.1' to app/build.gradle.

2. Add android:name="android.support.multidex.MultiDexApplication" to the application tag in AndroidManifest.xml.

3. If you are using a custom Application class, skip the AndroidManifest.xml and make your Application class extend MultiDexApplication instead of Application.

Answer 4

You have to use the com.google.firebase:firebase-ads:9.0.2 AdMob on Android dependencies,

compile 'com.google.firebase:firebase-ads:9.0.2'

and remove your

play-services (com.google.android.gms: play-services:9.0.2)

It works for me!

Answer 5

with my case: Use FCM and Google map

//for FCM
compile 'com.google.firebase:firebase-messaging:9.4.0'
//for Map
compile 'com.google.android.gms:play-services:9.4.0'

I have fixed: Removed

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

and Used

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 6

In Android 4.4 the solucion was similar like this(https://stackoverflow.com/a/38707231/3377472):

-I have Google Play services revision 33

1) Configure build.gradle and and dependencies

Enabled multidex support and add library of multidex

   android {
        compileSdkVersion 23
        buildToolsVersion '23.0.3'
        defaultConfig {
            applicationId "packagename"
            minSdkVersion 14
            targetSdkVersion 23
            versionCode 1
            versionName "1.0"

            //------- Enabling multidex support----------.
            multiDexEnabled true
        }

        dexOptions {
            javaMaxHeapSize "3g"//use 3Gb of ram to launch android 
        }

        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
        productFlavors {
        }
    }


dependencies {

      compile 'com.android.support:multidex:1.0.1' // 1.0.0

      // if you are using google maps
      compile 'com.google.android.gms:play-services-maps:9.2.0'
      compile 'com.google.android.gms:play-services-location:9.2.0'
}

2)Edit Manifest, and add this android:name

<application
        android:name="android.support.multidex.MultiDexApplication"
        ...
        .....
        activity
             android:name="packagename.Application"
             ....
             ...
       </activity>

3)Application Class

-My application class is:

import android.support.multidex.MultiDex;

public class Application extends AppCompatActivity {


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


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //this is the solution 
        MultiDex.install(this);

        setContentView(R.layout.layout_example);
        ----
        ----