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

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

In the Application class,

public class Global extends MultiDexApplication {
...
}