java.lang.NoClassDefFoundError:解析失败解析失败：Lcom/google/android/gms/common/internal/zzab；

我正在按照教程（）将图像上载到Firebase数据库，但出现以下错误。我重新检查了gradle依赖项，还启用了multidex支持，但错误仍然存在

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/internal/zzab;
    at com.google.firebase.storage.FirebaseStorage.getInstance(Unknown Source)
    at com.paperwrrk.android.storageref.MainActivity.<init>(MainActivity.java:36)
    at java.lang.Class.newInstance(Native Method)
    at android.app.Instrumentation.newActivity(Instrumentation.java:1068)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2351)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510)
    at android.app.ActivityThread.-wrap11(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:148)
    at android.app.ActivityThread.main(ActivityThread.java:5461)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
    at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:102)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.common.internal.zzab" on path: DexPathList[[dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-tubesock-0.0.11_74622aa9da17bf60443b34c100000d076f6631ba-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-support-annotations-25.0.0_416ca7aea2b0e15fba678c97c0d71c330758ffee-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_9-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_8-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_7-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_6-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_5-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_4-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_3-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_2-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_1-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-slice_0-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-jackson-databind-2.2.2_169f7b55dddecf9b169deccb0ac50ee124eda962-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-jackson-core-2.2.2_3ae6e87b0280ab52f712dfb927e3401fe25aa21c-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-jackson-annotations-2.2.2_dd21f43a23482b41eb5ed094fcce68c90eeb0ffd-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-internal_impl-25.0.0_e8156948d2eb9e5ed0b41cc1f9f830e7838bb3b5-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-internal_impl-25.0.0_9056040795c4cf170b00cbf021bf976514542498-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-internal_impl-25.0.0_79b2045e82b81d2f064515f884990a3d2a9f29af-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-internal_impl-25.0.0_2879b3ac18601405060244958a8db64bdb3655f9-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-internal_impl-25.0.0_1ce40cec84eadc9153f026cb869c8b1760c8461a-classes.dex", dex file "/data/data/com.paperwrrk.android.storageref/files/instant-run/dex/slice-firebase-client-jvm-2.3.1_764f8006

---

请告诉我我做错了什么

现在问题来了，您在gradle的依赖项中使用了不同的版本 所以改变这个

compile 'com.google.firebase:firebase-database:10.0.0'
testCompile 'junit:junit:4.12'
compile 'com.firebase:firebase-client-android:2.3.1'
compile 'com.google.firebase:firebase-auth:9.2.1'
compile 'com.google.firebase:firebase-storage:9.2.1'
compile 'com.android.support:multidex:1.0.0'

对此

compile 'com.google.firebase:firebase-database:10.0.1'
testCompile 'junit:junit:4.12'
compile 'com.firebase:firebase-client-android:2.3.1'
compile 'com.google.firebase:firebase-auth:10.0.1'
compile 'com.google.firebase:firebase-storage:10.0.1'
compile 'com.android.support:multidex:1.0.0'

---

还有一件事是，现在

com.firebae:firebase客户端android

已被弃用，因此您需要将其替换为

com.google.firebase:firebase数据库：10.0.1

，如果您正在寻求react native项目的解决方案，这里是该文件的文档，确保不同模块之间使用相同的版本，并用一些最新的可用版本替换“+”。

我在执行本机ad时遇到了类似的问题，并花费了近4个小时

最后我发现com.google.android.gms有不同的版本：在不同的模块（'17.1.1'和'12.0.0'）中播放服务广告

---

将所有版本更改为17.1.1后，它解决了我的问题

大多数情况下，问题出在梯度上。我有一个类似的问题，直到我改变firebase-（存储/身份验证/数据库）模块应用程序的构建梯度，使之与例如。

---

（com.google.firebase:firebase存储：16.1.0，com.google.firebase:firebase认证：16.1.0，com.google.firebase:firebase数据库：16.1.0）

我在facebook帐户工具包库中也遇到类似问题。这个解决方案非常有效！荣誉从gradle 3.0开始，wards不推荐使用“编译”。改用“实现”或“Api”。另外，“testCompile”也不推荐使用，请改用“testImplementation”。这是一个很好的答案，但在我的情况下，我的错误是在初始化之前使用了分析库。通常使用未初始化的类（库）会导致此错误

compile 'com.google.firebase:firebase-database:10.0.1'
testCompile 'junit:junit:4.12'
compile 'com.firebase:firebase-client-android:2.3.1'
compile 'com.google.firebase:firebase-auth:10.0.1'
compile 'com.google.firebase:firebase-storage:10.0.1'
compile 'com.android.support:multidex:1.0.0'