运行安卓YouTube接口Demos时找不到类异常

Question

最近我不能运行任何用于安卓的YouTube应用程序接口演示。在实例化第一个与YouTube应用编程接口类有一些依赖关系的活动时，我得到了一个ClassNotFoundException。任何使用YouTube应用程序接口的应用程序都会发生这种情况。

我的YouTube应用程序更新为4.5.+，我在三星Galaxy s3迷你手机上运行JellyBean。

在我的手机或Eclipse中有没有什么我可能会遗漏的设置？

此处编辑的是logcat副本(这次在Nexus S上运行)：

06-18 09:45:26.796: D/libEGL(15140): loaded /vendor/lib/egl/libEGL_POWERVR_SGX540_120.so
06-18 09:45:26.832: D/libEGL(15140): loaded /vendor/lib/egl/libGLESv1_CM_POWERVR_SGX540_120.so
06-18 09:45:26.836: D/libEGL(15140): loaded /vendor/lib/egl/libGLESv2_POWERVR_SGX540_120.so
06-18 09:45:26.964: D/OpenGLRenderer(15140): Enabling debug mode 0
06-18 09:45:35.796: W/dalvikvm(15140): Unable to resolve superclass of Lcom/examples/youtubeapidemo/YouTubeFailureRecoveryActivity; (109)
06-18 09:45:35.796: W/dalvikvm(15140): Link of class 'Lcom/examples/youtubeapidemo/YouTubeFailureRecoveryActivity;' failed
06-18 09:45:35.804: W/dalvikvm(15140): Unable to resolve superclass of Lcom/examples/youtubeapidemo/PlayerViewDemoActivity; (102)
06-18 09:45:35.804: W/dalvikvm(15140): Link of class 'Lcom/examples/youtubeapidemo/PlayerViewDemoActivity;' failed
06-18 09:45:35.820: D/AndroidRuntime(15140): Shutting down VM
06-18 09:45:35.820: W/dalvikvm(15140): threadid=1: thread exiting with uncaught exception (group=0x41a1a300)
06-18 09:45:35.855: E/AndroidRuntime(15140): FATAL EXCEPTION: main
06-18 09:45:35.855: E/AndroidRuntime(15140): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.examples.youtubeapidemo/com.examples.youtubeapidemo.PlayerViewDemoActivity}: java.lang.ClassNotFoundException: com.examples.youtubeapidemo.PlayerViewDemoActivity
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1983)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.app.ActivityThread.access$600(ActivityThread.java:130)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.os.Handler.dispatchMessage(Handler.java:99)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.os.Looper.loop(Looper.java:137)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.app.ActivityThread.main(ActivityThread.java:4745)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at java.lang.reflect.Method.invokeNative(Native Method)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at java.lang.reflect.Method.invoke(Method.java:511)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at dalvik.system.NativeStart.main(Native Method)
06-18 09:45:35.855: E/AndroidRuntime(15140): Caused by: java.lang.ClassNotFoundException: com.examples.youtubeapidemo.PlayerViewDemoActivity
06-18 09:45:35.855: E/AndroidRuntime(15140):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
06-18 09:45:35.855: E/AndroidRuntime(15140):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1974)
06-18 09:45:35.855: E/AndroidRuntime(15140):    ... 11 more

解决了！

酷，我找到了答案。似乎是最近的ADT更新中的错误。这个链接解释了所有的一切：https://groups.google.com/d/msg/adt-dev/epOfZbKPFdk/v4a-pTbq1OwJ

或者引用它：

项目右键单击>属性> Java构建路径>订购和导出>检查Android私有库>确定

然后选择Project > Clean...

并重新构建/运行。

Answer 1

似乎是最近的ADT更新中的错误。这个链接解释了所有的一切：https://groups.google.com/d/msg/adt-dev/epOfZbKPFdk/v4a-pTbq1OwJ

或者引用它：

项目右键单击>属性> Java构建路径>订购和导出>检查Android私有库>确定

然后选择Project > Clean...

并重新构建/运行。