Android App closes on adding wrapper class to manifest

Question

App closes on adding wrapper class to manifest. On removal of the class it works perfectly fine.

the class that needs to be added :

public class App extends Application {

    @Override
    public void onCreate() {
        super.onCreate();

        final FirebaseRemoteConfig remoteConfig = FirebaseRemoteConfig.getInstance();
        Map<String,Object> defaultValue = new HashMap<>();
        defaultValue.put(UpdateHelper.KEY_UPDATE_ENABLE,false);
        defaultValue.put(UpdateHelper.KEY_UPDATE_VERSION,"1.0");
        defaultValue.put(UpdateHelper.KEY_UPDATE_URL,"play url");

        remoteConfig.setDefaults(defaultValue);
        remoteConfig.fetch(5).addOnCompleteListener(new OnCompleteListener<Void>() {
            @Override
            public void onComplete(@NonNull Task<Void> task) {
                if(task.isSuccessful()){
                    remoteConfig.activateFetched();
                }
            }
        });
    }
}

manifest :

<application
        android:name="com.abc.App"
        android:allowBackup="true"
        android:icon="@drawable/logo"
        android:label="@string/app_name"
        android:roundIcon="@drawable/logo"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

stack trace :

java.lang.Class<com.google.android.gms.internal.zzevx>: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/internal/zzfhe;
2019-04-26 08:35:28.661 9940-9940/com.abc I/art:     at com.google.firebase.remoteconfig.FirebaseRemoteConfig com.google.firebase.remoteconfig.FirebaseRemoteConfig.getInstance() ((null):-1)
2019-04-26 08:35:28.661 9940-9940/com.abc I/art:     at void com.abc.App.onCreate() (App.java:18)

line 18 -> final FirebaseRemoteConfig remoteConfig = FirebaseRemoteConfig.getInstance();

Answer 1

You need to update this dependency in app/gradle

Remote Config :

com.google.firebase:firebase-config:16.5.0