一个正常运行的项目会生成一个大约 400 kb 的 apk。
它必须重新安装 eclipse 并再次生成工作区，项目才能正确编译。生成文件 apk 但有 200kb。运行模拟器时报错：
“应用程序 X 已意外停止。请重试”。
Logcat 显示以下内容：
07-09 00:51:51.332: E/AndroidRuntime(219): Uncaught handler: thread main exiting due to uncaught exception
07-09 00:51:51.351: E/AndroidRuntime(219): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.mobilesoftware.rankingd/com.mobilesoftware.rankingd.MainActivity}: java.lang.ClassNotFoundException: com.mobilesoftware.rankingd.MainActivity in loader dalvik.system.PathClassLoader@44e8c3b0
07-09 00:51:51.351: E/AndroidRuntime(219): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
07-09 00:51:51.351: E/AndroidRuntime(219): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
07-09 00:51:51.351: E/AndroidRuntime(219): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
07-09 00:51:51.351: E/AndroidRuntime(219): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
07-09 00:51:51.351: E/AndroidRuntime(219): at android.os.Handler.dispatchMessage(Handler.java:99)
07-09 00:51:51.351: E/AndroidRuntime(219): at android.os.Looper.loop(Looper.java:123)
07-09 00:51:51.351: E/AndroidRuntime(219): at android.app.ActivityThread.main(ActivityThread.java:4363)
07-09 00:51:51.351: E/AndroidRuntime(219): at java.lang.reflect.Method.invokeNative(Native Method)
07-09 00:51:51.351: E/AndroidRuntime(219): at java.lang.reflect.Method.invoke(Method.java:521)
07-09 00:51:51.351: E/AndroidRuntime(219): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
07-09 00:51:51.351: E/AndroidRuntime(219): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
07-09 00:51:51.351: E/AndroidRuntime(219): at dalvik.system.NativeStart.main(Native Method)
07-09 00:51:51.351: E/AndroidRuntime(219): Caused by: java.lang.ClassNotFoundException: com.mobilesoftware.rankingd.MainActivity in loader dalvik.system.PathClassLoader@44e8c3b0
07-09 00:51:51.351: E/AndroidRuntime(219): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
07-09 00:51:51.351: E/AndroidRuntime(219): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
07-09 00:51:51.351: E/AndroidRuntime(219): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
07-09 00:51:51.351: E/AndroidRuntime(219): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
07-09 00:51:51.351: E/AndroidRuntime(219): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
07-09 00:51:51.351: E/AndroidRuntime(219): ... 11 more
有什么想法可以找到问题的解决方案吗？谢谢！