应用在Firebase数据库getinstance上崩溃

Question

Before this error appeared, I updated firebase-auth to version 16.0.2 in attempt to solved a "Program type already present: com.google.android.gms.internal" error. Would that be related?

Crash log:

> java.lang.NoSuchMethodError: No virtual method zzboy()Z in class
> Lcom/google/firebase/FirebaseApp; or its super classes (declaration of
> 'com.google.firebase.FirebaseApp' appears in
> /data/app/com.bignerdranch.android.instagramclone-1/split_lib_dependencies_apk.apk)
>                       at com.google.firebase.database.FirebaseDatabase.getInstance(Unknown Source)
>                       at com.google.firebase.database.FirebaseDatabase.getInstance(Unknown Source)
>                       at com.bignerdranch.android.instagramclone.Utils.FirebaseMethods.<init>(FirebaseMethods.java:57)
>                       at com.bignerdranch.android.instagramclone.Share.NextActivity.onCreate(NextActivity.java:49)
>                       at android.app.Activity.performCreate(Activity.java:6372)
>                       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110)
>                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2432)
>                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2539)
>                       at android.app.ActivityThread.access$900(ActivityThread.java:168)
>                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1378)
>                       at android.os.Handler.dispatchMessage(Handler.java:102)
>                       at android.os.Looper.loop(Looper.java:150)
>                       at android.app.ActivityThread.main(ActivityThread.java:5659)
>                       at java.lang.reflect.Method.invoke(Native Method)
>                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:822)
>                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:712)

project gradle:

buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files

        classpath 'com.google.gms:google-services:4.0.1'
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
        google() // Google's Maven repository
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

app gradle:

 apply plugin: 'com.android.application' android { compileSdkVersion 26 buildToolsVersion '27.0.3' defaultConfig { applicationId "com.bignerdranch.android.instagramclone" minSdkVersion 19 targetSdkVersion 26 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', 

{exclude group: 'com.android.support', module: 'support-annotations' }) implementation 'com.android.support:appcompat-v7:26.1.0' implementation 'com.android.support.constraint:constraint-layout:1.0.2' testImplementation 'junit:junit:4.12'

  implementation 'com.google.firebase:firebase-core:16.0.1' //Design library for Coordinator Layout and Toolbars implementation 'com.android.support:design:26.1.0' //BottomNavigationViewEx Library implementation 'com.github.ittianyu:BottomNavigationViewEx:1.2.4' //Circle ImageView implementation 'de.hdodenhof:circleimageview:2.2.0' //Universal Image Loader implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5' //firebase authentication implementation 'com.google.firebase:firebase-auth:16.0.2' //firebase database implementation 'com.google.firebase:firebase-database:11.6.0' //firebase storage implementation 'com.google.firebase:firebase-storage:16.0.1' } //Firebase apply plugin: 'com.google.gms.google-services' 

Answer 1

我升级到4.2.0并成功了

classpath 'com.google.gms:google-services:4.2.0'

Answer 2

Your dependency for firebase-database is really old. Try using the latest version:

implementation 'com.google.firebase:firebase-database:16.0.1'

The latest versions of each dependency are all listed on this page .