那些遇到过的问题

为什么当我尝试在Firebase数据库中编写时出现此错误？与FirebaseApp $ IdTokenListener相关

wei*_*g29 1 java android noclassdeffounderror firebase firebase-realtime-database

我只是想在数据库中写一条消息，然后在运行应用程序时遇到此错误

据我所知，我已经在gradle中添加了必要的依赖

从模块级别开始，我已经添加了Firebase Core，Firebase数据库等：

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:28.0.0-rc02'
    implementation 'com.android.support:design:28.0.0-rc02'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:support-vector-drawable:28.0.0-rc02'
    implementation 'com.android.support:support-v4:28.0.0-rc02'

    implementation 'com.firebaseui:firebase-ui-auth:5.0.0'
    implementation 'com.google.firebase:firebase-database:16.0.1'
    implementation 'com.google.firebase:firebase-auth:16.2.1'

    implementation 'com.google.android.gms:play-services-maps:16.1.0'
    implementation 'com.google.firebase:firebase-core:16.0.8'
    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.squareup.picasso:picasso:2.71828'
    implementation 'de.hdodenhof:circleimageview:3.0.0'

    implementation 'com.github.bumptech.glide:glide:4.9.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
    implementation 'com.facebook.android:facebook-android-sdk:[4,5)'

    implementation 'com.facebook.android:facebook-android-sdk:4.42.0'

    implementation 'com.android.support:multidex:1.0.3'
}
apply plugin: 'com.google.gms.google-services'
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在项目级别上

buildscript {
    repositories {
        google()
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0'
        classpath 'com.google.gms:google-services:4.2.0'

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

allprojects {
    repositories {
        google()
        jcenter()

    }
}
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最后，当我遇到问题时进行编码： 

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:28.0.0-rc02'
    implementation 'com.android.support:design:28.0.0-rc02'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:support-vector-drawable:28.0.0-rc02'
    implementation 'com.android.support:support-v4:28.0.0-rc02'

    implementation 'com.firebaseui:firebase-ui-auth:5.0.0'
    implementation 'com.google.firebase:firebase-database:16.0.1'
    implementation 'com.google.firebase:firebase-auth:16.2.1'

    implementation 'com.google.android.gms:play-services-maps:16.1.0'
    implementation 'com.google.firebase:firebase-core:16.0.8'
    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.squareup.picasso:picasso:2.71828'
    implementation 'de.hdodenhof:circleimageview:3.0.0'

    implementation 'com.github.bumptech.glide:glide:4.9.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
    implementation 'com.facebook.android:facebook-android-sdk:[4,5)'

    implementation 'com.facebook.android:facebook-android-sdk:4.42.0'

    implementation 'com.android.support:multidex:1.0.3'
}
apply plugin: 'com.google.gms.google-services'
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这是我运行应用程序时遇到的错误 

E/RunLoop: Uncaught exception in Firebase Database runloop (3.0.0). Please report to firebase-database-client@google.com
    java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/firebase/FirebaseApp$IdTokenListener;
        at com.google.android.gms.internal.firebase_database.zzq.zza(Unknown Source:0)
        at com.google.android.gms.internal.firebase_database.zzbz.zzba(Unknown Source:119)
        at com.google.android.gms.internal.firebase_database.zzdo.zzb(Unknown Source:0)
        at com.google.android.gms.internal.firebase_database.zzdo.zza(Unknown Source:2)
        at com.google.firebase.database.FirebaseDatabase.zzc(Unknown Source:9)
        at com.google.firebase.database.FirebaseDatabase.getReference(Unknown Source:0)
        at com.antonio.yomassegura.Activities.MainActivity.onCreate(MainActivity.java:97)
        at android.app.Activity.performCreate(Activity.java:7009)
        at android.app.Activity.performCreate(Activity.java:7000)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
        at android.app.ActivityThread.-wrap11(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6494)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:440)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
     Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.FirebaseApp$IdTokenListener" on path: DexPathList[[zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/base.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_dependencies_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_resources_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_0_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_1_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_2_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_3_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_4_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_5_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_6_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_7_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_8_apk.apk", zip file "/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/lib/arm64, /system/lib64, /vendor/lib64]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        at com.google.android.gms.internal.firebase_database.zzq.zza(Unknown Source:0) 
        at com.google.android.gms.internal.firebase_database.zzbz.zzba(Unknown Source:119) 
        at com.google.android.gms.internal.firebase_database.zzdo.zzb(Unknown Source:0) 
        at com.google.android.gms.internal.firebase_database.zzdo.zza(Unknown Source:2) 
        at com.google.firebase.database.FirebaseDatabase.zzc(Unknown Source:9) 
        at com.google.firebase.database.FirebaseDatabase.getReference(Unknown Source:0) 
        at com.antonio.yomassegura.Activities.MainActivity.onCreate(MainActivity.java:97) 
        at android.app.Activity.performCreate(Activity.java:7009) 
        at android.app.Activity.performCreate(Activity.java:7000) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856) 
        at android.app.ActivityThread.-wrap11(Unknown Source:0) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:164) 
        at android.app.ActivityThread.main(ActivityThread.java:6494) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:440) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) 
        Suppressed: java.io.IOException: No original dex files found for dex location /data/app/com.antonio.yomassegura-HsLX4Xe37NKfwPgQz2VVAA==/split_lib_resources_apk.apk
        at dalvik.system.DexFile.openDexFileNative(Native Method)
        at dalvik.system.DexFile.openDexFile(DexFile.java:353)
        at dalvik.system.DexFile.<init>(DexFile.java:100)
        at dalvik.system.DexFile.<init>(DexFile.java:74)
        at dalvik.system.DexPathList.loadDexFile(DexPathList.java:374)
        at dalvik.system.DexPathList.makeDexElements(DexPathList.java:337)
        at dalvik.system.DexPathList.<init>(DexPathList.java:157)
        at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:65)
            at dalvik.system.PathClassLoader.<init>(PathClassLoader.jav
D/FA: Logging event (FE): screen_view(_vs), Bundle[{firebase_event_origin(_o)=auto, firebase_previous_class(_pc)=SplashActivity, firebase_previous_id(_pi)=-1215349150027374512, firebase_screen_class(_sc)=MainActivity, firebase_screen_id(_si)=-1215349150027374511}]
D/AndroidRuntime: Shutting down VM
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wei*_*g29 11

我的问题就解决了，只需将Firebase数据库版本升级到17：

implementation 'com.google.firebase:firebase-database:17.0.0'
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希望对别人有帮助。

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