NoClassDefFoundError: com.google.firebase.FirebaseOptions

Question

I keep on getting the NoClassDefFoundError on other test device (4.4.2) that I\'m using. But works fine on my test device (Android 5.1).

I tried the solutio

Answer 1

This bug is reported with newer versions mostly arround Revision 28,29 and its resolved in newer Play services versions so if you having this issue then make sure you have updated version of Google Play service in your Android studio. as older versions have it. To update Play services version..

Follow these steps:

1. Go to Android SDK Manager
2. Go to Extra here you will find as shown in image below, update it to latest version and try to run project.

Then if you are using MultiDex in your Application,then make sure you have correctly done it.

In you App level Build.Gradle file use this code multiDexEnabled true

 defaultConfig {
        applicationId "com.reversebits.tapanhp.saffer"
        minSdkVersion 17
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        multiDexEnabled true
    }

Apply MultiDex dependency in dependencies inside Same file.

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])

    testCompile 'junit:junit:4.12'

    compile 'com.google.android.gms:play-services:9.4.0'
    compile 'com.android.support:multidex:1.0.1'
}

Then inside your AndroidMenifest.xml file make sure that Application tag have name of MultiDexApplication.

Note

if you have your own Application class and you are using it in your menifest file then you can initialize multidex in your Application class as follows,

public class AppClass extends Application {

    //this will initialize multidex in your own Application class
    @Override
    protected void attachBaseContext(Context base) {
        super.attachBaseContext(base);
        MultiDex.install(this);
    }

}