Firebase database dependency crashes app

Question

I'm trying to write to my DB with the following "Set up Firebase Realtime Database for Android" example but the app crashes on startup.

It's seems because the dependency:

 compile 'com.google.firebase:firebase-database:9.2.1'

The crash log:

FATAL EXCEPTION: main
Process: com.example.giat.myapplication, PID: 3874
java.lang.NoSuchMethodError: No static method zzeq(Landroid/content/Context;)Lcom/google/android/gms/internal/zzalp; in class Lcom/google/android/gms/internal/zzalp; or its super classes (declaration of 'com.google.android.gms.internal.zzalp' appears in /data/data/com.example.giat.myapplication/files/instant-run/dex/slice-com.google.firebase-firebase-database-9.2.1_b22e7bdbdba6ace0ee1e94f163c76d1f75b59f7e-classes.dex)
    at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)
    at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)
    at com.google.firebase.FirebaseApp.zzek(Unknown Source)
    at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1702)
    at android.content.ContentProvider.attachInfo(ContentProvider.java:1665)
    at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
    at android.app.ActivityThread.installProvider(ActivityThread.java:5417)
    at android.app.ActivityThread.installContentProviders(ActivityThread.java:4988)
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4923)
    at android.app.ActivityThread.access$1500(ActivityThread.java:144)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1424)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:155)
    at android.app.ActivityThread.main(ActivityThread.java:5696)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)

MY App build.gradle:

apply plugin: 'com.android.application'

android {
compileSdkVersion 24
buildToolsVersion "24.0.1"

defaultConfig {
    applicationId "com.example.giat.myapplication"
    minSdkVersion 15
    targetSdkVersion 24
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:24.1.1'
compile 'com.google.firebase:firebase-core:9.4.0'
compile 'com.google.firebase:firebase-database:9.2.1'

}


apply plugin: 'com.google.gms.google-services'

How to fix this issue ?

Answer 1

This problem is caused by use of inconsistent Firebase library versions. Update your build dependencies to consistently use version 9.4.0.

compile 'com.google.firebase:firebase-core:9.4.0'
compile 'com.google.firebase:firebase-database:9.4.0'

Answer 2

If, like me, you have all your firebase things using the same ver. be sure to check all google related ones too.

For me I had:

compile 'com.google.firebase:firebase-core:10.0.1'
compile 'com.google.firebase:firebase-ads:10.0.1'
compile 'com.google.firebase:firebase-config:10.0.1'

and:

compile 'com.google.android.gms:play-services-ads:10.2.1'

The issue for me wasn't that the firebase didn't match across themselves but that they didn't match the google ver. used for ads.

Changing all my firebase ones to use 10.2.1 solved the issue for me.

So make sure all the firebase ones match the other google ones.