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

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

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);
        ----
        ----