Android GoogleCast GoogleCast错误- java.lang.NoClassDefFoundError: java.lang.NoClassDefFoundError

Question

我正在编译ChromeCast这个Github项目CastVideos android.in Eclipse环境，我在这个项目上安装了最新的依赖项。

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当我运行项目时，它会抛出这个运行时错误。

   05-05 11:25:08.353: E/AndroidRuntime(17660): FATAL EXCEPTION: main
   05-05 11:25:08.353: E/AndroidRuntime(17660): java.lang.NoClassDefFoundError: android.support.v7.media.MediaRouter$GlobalMediaRouter$1
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.support.v7.media.MediaRouter$GlobalMediaRouter.<init>(MediaRouter.java:1628)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.support.v7.media.MediaRouter.getInstance(MediaRouter.java:246)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at com.google.android.libraries.cast.companionlibrary.cast.BaseCastManager.<init>(BaseCastManager.java:189)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at com.google.android.libraries.cast.companionlibrary.cast.VideoCastManager.<init>(VideoCastManager.java:196)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at com.google.android.libraries.cast.companionlibrary.cast.VideoCastManager.initialize(VideoCastManager.java:223)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at com.google.sample.cast.refplayer.CastApplication.onCreate(CastApplication.java:43)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1014)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4280)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.app.ActivityThread.access$1400(ActivityThread.java:143)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1301)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.os.Handler.dispatchMessage(Handler.java:99)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.os.Looper.loop(Looper.java:137)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at android.app.ActivityThread.main(ActivityThread.java:4950)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at java.lang.reflect.Method.invokeNative(Native Method)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at java.lang.reflect.Method.invoke(Method.java:511)
   05-05 11:25:08.353: E/AndroidRuntime(17660):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:997)


   05-05 11:25:08.303: E/dalvikvm(17660): Could not find class 'android.support.v7.media.MediaRouter$GlobalMediaRouter$1', referenced from method android.support.v7.media.MediaRouter$GlobalMediaRouter.<init>
   05-05 11:25:08.303: W/dalvikvm(17660): VFY: unable to resolve new-instance 1180 (Landroid/support/v7/media/MediaRouter$GlobalMediaRouter$1;) in Landroid/support/v7/media/MediaRouter$GlobalMediaRouter;
   05-05 11:25:08.303: D/dalvikvm(17660): VFY: replacing opcode 0x22 at 0x0035
   05-05 11:25:08.303: W/dalvikvm(17660): VFY: unable to find class referenced in signature (Landroid/support/v4/media/session/MediaSessionCompat;)
   05-05 11:25:08.313: I/dalvikvm(17660): Could not find method android.support.v4.media.session.MediaSessionCompat.getSessionToken, referenced from method android.support.v7.media.MediaRouter$GlobalMediaRouter.getMediaSessionToken
   05-05 11:25:08.313: W/dalvikvm(17660): VFY: unable to resolve virtual method 2967: Landroid/support/v4/media/session/MediaSessionCompat;.getSessionToken ()Landroid/support/v4/media/session/MediaSessionCompat$Token;
   05-05 11:25:08.313: D/dalvikvm(17660): VFY: replacing opcode 0x6e at 0x0011
   05-05 11:25:08.323: W/dalvikvm(17660): VFY: unable to find class referenced in signature (Landroid/support/v4/media/session/MediaSessionCompat;)
   05-05 11:25:08.323: I/dalvikvm(17660): Could not find method android.support.v4.media.session.MediaSessionCompat.getRemoteControlClient, referenced from method android.support.v7.media.MediaRouter$GlobalMediaRouter.setMediaSessionCompat
   05-05 11:25:08.323: W/dalvikvm(17660): VFY: unable to resolve virtual method 2966: Landroid/support/v4/media/session/MediaSessionCompat;.getRemoteControlClient ()Ljava/lang/Object;
   05-05 11:25:08.323: D/dalvikvm(17660): VFY: replacing opcode 0x6e at 0x000a
   05-05 11:25:08.323: I/dalvikvm(17660): Could not find method android.support.v4.media.session.MediaSessionCompat.getMediaSession, referenced from method android.support.v7.media.MediaRouter$GlobalMediaRouter.setMediaSessionCompat
   05-05 11:25:08.323: W/dalvikvm(17660): VFY: unable to resolve virtual method 2965: Landroid/support/v4/media/session/MediaSessionCompat;.getMediaSession ()Ljava/lang/Object;
   05-05 11:25:08.323: D/dalvikvm(17660): VFY: replacing opcode 0x6e at 0x001e
   05-05 11:25:08.333: I/dalvikvm(17660): Could not find method android.support.v4.media.session.MediaSessionCompat.getRemoteControlClient, referenced from method android.support.v7.media.MediaRouter$GlobalMediaRouter.setMediaSessionCompat
   05-05 11:25:08.333: W/dalvikvm(17660): VFY: unable to resolve virtual method 2966: Landroid/support/v4/media/session/MediaSessionCompat;.getRemoteControlClient ()Ljava/lang/Object;
   05-05 11:25:08.333: D/dalvikvm(17660): VFY: replacing opcode 0x6e at 0x0032
   05-05 11:25:08.333: I/dalvikvm(17660): Could not find method android.support.v4.media.session.MediaSessionCompat.addOnActiveChangeListener, referenced from method android.support.v7.media.MediaRouter$GlobalMediaRouter.setMediaSessionCompat
   05-05 11:25:08.333: W/dalvikvm(17660): VFY: unable to resolve virtual method 2964: Landroid/support/v4/media/session/MediaSessionCompat;.addOnActiveChangeListener (Landroid/support/v4/media/session/MediaSessionCompat$OnActiveChangeListener;)V
   05-05 11:25:08.333: D/dalvikvm(17660): VFY: replacing opcode 0x6e at 0x0044
   05-05 11:25:08.333: I/dalvikvm(17660): Failed resolving Landroid/support/v7/media/MediaRouter$GlobalMediaRouter$1; interface 510 'Landroid/support/v4/media/session/MediaSessionCompat$OnActiveChangeListener;'
   05-05 11:25:08.333: W/dalvikvm(17660): Link of class 'Landroid/support/v7/media/MediaRouter$GlobalMediaRouter$1;' failed

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Answer 1

1. 转到您的项目并检查v7-appcompat jar文件。右击它和Build Path-> Add to Buildpath
2. 检查buildpath。特别是，如果选中了Order and Export部分，则为v7-appcompat library部分。
3. 检查您的项目是否包含多重一个在您的项目中，另一个在您已经添加到您的项目中的库中。只需删除，即您在项目中添加的一个库。然后清理并运行应用程序。