Default FirebaseApp is not initialized in this process. - Android Studio Error

Question

I'm having trouble using Firebase authentication in conjunction with FirebaseUI. When I run my application the following problem appears: "Default FirebaseApp is not initialized in this process. Make sure to call FirebaseApp.initializeApp (Context) first."

In my app / build.gradle I have the dependencies:     

     implementation 'com.google.firebase: firebase-core: 16.0.1'
     implementation 'com.google.firebase: firebase-auth: 16.0.1'
     implementation 'com.google.firebase: firebase-database: 16.0.1'
     implementation 'com.firebaseui: firebase-ui-auth: 4.1.0'

and the "apply plugin: 'com.google.gms.google-services" at the end.

in my module / build.gradle I have dependency:         

classpath 'com.google.gms: google-services: 4.1.0'
classpath 'com.android.tools.build:gradle:3.3.0-alpha07'

I have already exported my googleservices.json to the "app" folder. I was left with no options and the problem continues. Any suggestions?

Logcat:

--------- beginning of crash

08-31 19:40:12.718 2865-2865/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: br.com.luccas.buscaperto, PID: 2865
    java.lang.RuntimeException: Unable to start activity ComponentInfo{br.com.luccas.buscaperto/br.com.luccas.buscaperto.MainActivity}: java.lang.IllegalStateException: Default FirebaseApp is not initialized in this process br.com.luccas.buscaperto. Make sure to call FirebaseApp.initializeApp(Context) first.
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
        at android.app.ActivityThread.-wrap11(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5417)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
     Caused by: java.lang.IllegalStateException: Default FirebaseApp is not initialized in this process br.com.luccas.buscaperto. Make sure to call FirebaseApp.initializeApp(Context) first.
        at com.google.firebase.FirebaseApp.getInstance(SourceFile:218)
        at com.google.firebase.auth.FirebaseAuth.getInstance(Unknown Source)
        at br.com.luccas.buscaperto.MainActivity.instantiateUser(MainActivity.java:89)
        at br.com.luccas.buscaperto.MainActivity.onCreate(MainActivity.java:64)
        at android.app.Activity.performCreate(Activity.java:6237)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
        at android.app.ActivityThread.-wrap11(ActivityThread.java) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5417) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

my top level gradle:

buildscript {
    ext {
        release = [
                versionName: "6.1.0-rc01",
                versionCode: 6100
        ]

        setup = [
                compileSdk: 28,
                buildTools: "28.0.2",
                minSdk    : 14,
                targetSdk : 28
        ]

        versions = [
                androidX: '1.0.0-rc01'
        ]
    }

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0-alpha07'
        classpath 'com.google.gms:google-services:4.1.0'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

my app level gradle:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "br.com.luccas.buscaperto"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    buildToolsVersion '28.0.2'
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "androidx.legacy:legacy-support-v4:${versions.androidX}"
    implementation "androidx.appcompat:appcompat:${versions.androidX}"
    implementation "androidx.constraintlayout:constraintlayout:${versions.androidX}"
    implementation "androidx.recyclerview:recyclerview:${versions.androidX}"
    implementation "androidx.annotation:annotation:${versions.androidX}"

    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

    implementation 'com.mikepenz:materialdrawer:6.1.0-rc01'
    implementation "com.google.android.material:material:${versions.androidX}"

    implementation 'com.google.firebase:firebase-core:16.0.3'
    implementation 'com.google.firebase:firebase-auth:16.0.3'
    implementation 'com.google.firebase:firebase-database:16.0.1'
    implementation 'com.firebaseui:firebase-ui-auth:4.1.0'

    implementation 'com.jakewharton:butterknife:8.8.1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}
apply plugin: 'com.google.gms.google-services'

Solution 1

Try to do like so:

implementation 'com.google.firebase:firebase-core:16.0.3'
implementation 'com.google.firebase:firebase-auth:16.0.3'
implementation 'com.google.firebase:firebase-database:16.0.1'
implementation 'com.firebaseui:firebase-ui-auth:4.1.0

And change this:

classpath 'com.android.tools.build:gradle:3.3.0-alpha07'

to

classpath 'com.android.tools.build:gradle:3.1.4'

Solution 2

Please upgrade your project level gms dependencies, I upgraded to 4.2.0 and it worked

classpath 'com.android.tools.build:gradle:3.3.2'
classpath 'com.google.gms:google-services:4.2.0'

Solution 3

I had same issue and the issue was with google-services.json that was not in proper format and some how, google-services.json had following in the file

COMMENT start clone the project and in firefox create a database and give the package name as .....

Solution 4

you need to update your google_services.json file. Download it from firebase and replace with the existing one. In json file there is a configuration which automatically merged the content provider which intitalizes your Firebase for the app with your manifest by default on building with gradle. But your current json file is missing that configuration. So you need to replace or you need to call static FirebaseApp(Context) method to solve this problem.Read Here

Add this in your app launcher onCreate method as

...... onCreate(.....)
       {
          FirebaseApp.initializeApp(this);
          ..........   

       }

View more solutions

Comments

[Luccas Freitas]

if I remove the "classpath 'com.android.tools.build:gradle:3.3.0-alpha07", I get the error: Plugin with id 'com.android.application' not found.

[Alex Mamo]

I didn't say to remove it but to change it to classpath 'com.google.gms:google-services:4.1.0' Have you tried this approach?

[Luccas Freitas]

I'm using both: classpath 'com.google.gms: google-services: 4.1.0' classpath 'com.android.tools.build:gradle:3.3.0-alpha07'

[Alex Mamo]

No, you need to use only one, the one from my last comment. Does it work this way?

[Luccas Freitas]

then it says: Plugin with id 'com.android.application' not found.

[Alex Mamo]

In this case update the gradle in your top level build.gradle file to classpath 'com.android.tools.build:gradle:3.1.4' Does it work now?

[Luccas Freitas]

I edited the question and attached the build.gradle files

[Alex Mamo]

Remove this classpath 'com.android.tools.build:gradle:3.3.0-alpha07' and add this classpath 'com.android.tools.build:gradle:3.1.4'. Does it work?

[Luccas Freitas]

Failed to resolve: androidx.constraintlayout:constraintlayout:1.0.0-rc01

[Alex Mamo]

I see that you get now another error, which means that basically the inital error disappeared. So your initial problem is now solved. Good to hear that :-) The fact that you are getting now another error should not scare you but this sound as another question. My personal hint is to comment that line of code and add this implementation 'com.android.support.constraint:constraint-layout:1.1.3'.

[Alex Mamo]

If my above hint doesn't solve the second problem, in order to follow the rules of this comunity, please post another fresh question, so me and other users can help you.

[Luccas Freitas]

Ok! Thanks for the help

[Luccas Freitas]

Actualy I downgraded de version to " classpath 'com.android.tools.build:gradle:3.2.0-alpha14'" and it works!

[Alex Mamo]

I recommend you always use the latest versions but if you say it worked, these are good news, cheers!

[mtrakal]

@AlexMamo you are mixing Gradle Build Tools and Google Services Plugin which both does totally different things and later recommend use an old version of build tools... You should check what which do: developer.android.com/studio/releases/gradle-plugin and developers.google.com/android/guides/google-services-plugin :)

[Alex Mamo]

@mtrakal Oh ya, you're right, my mistake. It should be classpath 'com.android.tools.build:gradle:3.1.4'. I have copied and paste the wrong line of code. Sorry about that. Just updated my answer.

[mtrakal]

@AlexMamo using 3.1.4 will not solve it when you work with AS 3.2 or 3.3 canary :). Using 3.1.4 is not possible too when you use Gradle 4.6+ :)

[Alex Mamo]

@mtrakal Why do you say that? I've tested with 3.3.0-alpha07 and it doesn't work.

[Naveed Ahmad]

I studied the release notes so found the dependencies of different versions