找不到类& quot; com.google.firebase.provider.FirebaseInitProvider" [英] Didn't find class "com.google.firebase.provider.FirebaseInitProvider"

问题描述

之前，我的程序运行良好.但是，当我刚将Android Studio更新到最新版本(基于16年9月15日建立的2.2)时，出现以下错误.构建它时，它显示:成功构建，但是在运行程序时出现此错误:

Before, my program run well. But When I just updated my Android studio to the latest version (2.2 built on 15-sept-16), I am having the following error. When I built it, it says: Built sucessfully, but this error appears when I run my program:

E/Android运行时:致命异常:主进程:com.example.androidtutorial，PID:28293java.lang.RuntimeException:无法获取提供程序com.google.firebase.provider.FirebaseInitProvider:java.lang.ClassNotFoundException:找不到类路径上的"com.google.firebase.provider.FirebaseInitProvider":DexPathList [[zip文件"/data/app/com.example.androidtutorial-2/base.apk"],nativeLibraryDirectories=[/data/app/com.example.androidtutorial-2/lib/x86，/system/lib，/vendor/lib]]在android.app.ActivityThread.installProvider(ActivityThread.java:5814)在android.app.ActivityThread.installContentProviders(ActivityThread.java:5403)在android.app.ActivityThread.handleBindApplication(ActivityThread.java:5342)在android.app.ActivityThread.-wrap2(ActivityThread.java)在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1528)在android.os.Handler.dispatchMessage(Handler.java:102)在android.os.Looper.loop(Looper.java:154)在android.app.ActivityThread.main(ActivityThread.java:6077)在java.lang.reflect.Method.invoke(本机方法)在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:865)在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)原因:java.lang.ClassNotFoundException:未找到类路径上的"com.google.firebase.provider.FirebaseInitProvider":DexPathList [[zip文件"/data/app/com.example.androidtutorial-2/base.apk"],nativeLibraryDirectories=[/data/app/com.example.androidtutorial-2/lib/x86，/system/lib，/vendor/lib]]在dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)在java.lang.ClassLoader.loadClass(ClassLoader.java:380)在java.lang.ClassLoader.loadClass(ClassLoader.java:312)在android.app.ActivityThread.installProvider(ActivityThread.java:5799)在android.app.ActivityThread.installContentProviders(ActivityThread.java:5403)在android.app.ActivityThread.handleBindApplication(ActivityThread.java:5342)在android.app.ActivityThread.-wrap2(ActivityThread.java)在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1528)在android.os.Handler.dispatchMessage(Handler.java:102)在android.os.Looper.loop(Looper.java:154)在android.app.ActivityThread.main(ActivityThread.java:6077)在java.lang.reflect.Method.invoke(本机方法)在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:865)在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.androidtutorial, PID: 28293 java.lang.RuntimeException: Unable to get provider com.google.firebase.provider.FirebaseInitProvider: java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.provider.FirebaseInitProvider" on path: DexPathList[[zip file "/data/app/com.example.androidtutorial-2/base.apk"],nativeLibraryDirectories=[/data/app/com.example.androidtutorial-2/lib/x86, /system/lib, /vendor/lib]] at android.app.ActivityThread.installProvider(ActivityThread.java:5814) at android.app.ActivityThread.installContentProviders(ActivityThread.java:5403) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5342) at android.app.ActivityThread.-wrap2(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1528) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6077) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.provider.FirebaseInitProvider" on path: DexPathList[[zip file "/data/app/com.example.androidtutorial-2/base.apk"],nativeLibraryDirectories=[/data/app/com.example.androidtutorial-2/lib/x86, /system/lib, /vendor/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) at java.lang.ClassLoader.loadClass(ClassLoader.java:380) at java.lang.ClassLoader.loadClass(ClassLoader.java:312) at android.app.ActivityThread.installProvider(ActivityThread.java:5799) at android.app.ActivityThread.installContentProviders(ActivityThread.java:5403)  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5342)  at android.app.ActivityThread.-wrap2(ActivityThread.java)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1528)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:154)  at android.app.ActivityThread.main(ActivityThread.java:6077)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

我已经看过其他问题，但是问题不一样.我究竟做错了什么?请帮助

I already looked at other questions but the problem is not the same. What am I doing wrong? Please help

推荐答案

在应用模块中 build.gradle

android {
   ...
   defaultConfig {
      multiDexEnabled true
      ...
   }
}

dependencies {
  // add dependency 
  compile 'com.android.support:multidex:1.0.1'
}

在 AndroidManifest.xml

<application
   ....
  android:name=".MyApplication">

 // ...
</application>

创建一个 MyApplication.java 文件

public class MyApplication extends Application {

    @Override
    protected void attachBaseContext(Context base) {
        super.attachBaseContext(base);
        MultiDex.install(this);
    }

}

有关更多详细信息，请参见此链接.

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