使用Android 5.1和Android Studio 2.2RC运行应用程序时的java.lang.NoClassDefFoundError

Question

我的应用程序在使用Android 6.0或Android 7.0的设备时正在构建并运行正常,但在运行任何带有Android 5.1的设备(未测试较低)时,它会失败并出现以下异常:

09-06 11:50:46.100 29601-29601/? E/AndroidRuntime: FATAL EXCEPTION: main
                                               Process: me.myapp.main, PID: 29601
                                               java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/internal/zzab;
                                                   at com.google.firebase.provider.FirebaseInitProvider.zza(Unknown Source)
                                                   at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
                                                   at android.app.ActivityThread.installProvider(ActivityThread.java:5084)
                                                   at android.app.ActivityThread.installContentProviders(ActivityThread.java:4679)
                                                   at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4619)
                                                   at android.app.ActivityThread.access$1500(ActivityThread.java:155)
                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1378)
                                                   at android.os.Handler.dispatchMessage(Handler.java:102)
                                                   at android.os.Looper.loop(Looper.java:135)
                                                   at android.app.ActivityThread.main(ActivityThread.java:5343)
                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                   at java.lang.reflect.Method.invoke(Method.java:372)
                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
                                                Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.common.internal.zzab" on path: DexPathList[[zip file "/data/app/me.myapp.main-1/base.apk"],nativeLibraryDirectories=[/data/app/me.myapp.main-1/lib/arm, /vendor/lib, /system/lib]]
                                                   at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
                                                   at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
                                                   at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
                                                   at com.google.firebase.provider.FirebaseInitProvider.zza(Unknown Source) 
                                                   at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) 
                                                   at android.app.ActivityThread.installProvider(ActivityThread.java:5084) 
                                                   at android.app.ActivityThread.installContentProviders(ActivityThread.java:4679) 
                                                   at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4619) 
                                                   at android.app.ActivityThread.access$1500(ActivityThread.java:155) 
                                                   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1378) 
                                                   at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                   at android.os.Looper.loop(Looper.java:135) 
                                                   at android.app.ActivityThread.main(ActivityThread.java:5343) 
                                                   at java.lang.reflect.Method.invoke(Native Method) 
                                                   at java.lang.reflect.Method.invoke(Method.java:372) 
                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905) 
                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700) 
                                                Suppressed: java.lang.ClassNotFoundException: com.google.android.gms.common.internal.zzab
                                                   at java.lang.Class.classForName(Native Method)
                                                   at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
                                                   at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
                                                   at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
                                                        ... 15 more
                                                Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

我已经确保我已将所有必需的库包含在我的gradle文件中(在这种情况下,日志显示了一个谷歌库,但它已经发生在其他人身上).我还确保启用Multidex并尝试清理和重建项目以及删除应用程序并重新安装.

我已经隔离了一些可能导致崩溃的情况:

• 即时运行已禁用
• 为多个设备构建应用程序

我正在使用Android Studio 2.2RC

编辑:仍然发生稳定的2.2

Answer 1

这是我们在runtime/dex_file.cc中可以看到的内容

bool DexFile::OpenFromZip(...) {
    ...
    while (i < 100) {
        std::string name = StringPrintf("classes%zu.dex", i)
        ...
    }
    ...
}

因此,如果你有超过100个dex文件,你会得到这个NoClassDefFoundError.

跟踪器中存在此行为的问题:

https://code.google.com/p/android/issues/detail?id=234367 https://code.google.com/p/android/issues/detail?id=170485

通过禁用预解除可以避免此错误.所以你可以把类似的东西

subprojects {
    project.plugins.whenPluginAdded { plugin ->
        if ("com.android.build.gradle.AppPlugin".equals(plugin.class.name)) {
            project.android.dexOptions.preDexLibraries = false
        } else if ("com.android.build.gradle.LibraryPlugin".equals(plugin.class.name)) {
            project.android.dexOptions.preDexLibraries = false
        }
    }
}

在根build.gradle文件中.