android eclipse 编译出错，实在不知道怎么弄了，来求助~
07-28 12:21:22.805: D/AndroidRuntime(1374): Shutting down VM
07-28 12:21:22.805: W/dalvikvm(1374): threadid=1: thread exiting with uncaught exception (group=0x40015560)
07-28 12:21:22.817: E/AndroidRuntime(1374): FATAL EXCEPTION: main
07-28 12:21:22.817: E/AndroidRuntime(1374): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.FJICC.lzm/com.FJICC.lzm.MainActivity}: java.lang.NullPointerException
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.os.Handler.dispatchMessage(Handler.java:99)
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.os.Looper.loop(Looper.java:123)
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.app.ActivityThread.main(ActivityThread.java:3683)
07-28 12:21:22.817: E/AndroidRuntime(1374): at java.lang.reflect.Method.invokeNative(Native Method)
07-28 12:21:22.817: E/AndroidRuntime(1374): at java.lang.reflect.Method.invoke(Method.java:507)
07-28 12:21:22.817: E/AndroidRuntime(1374): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
07-28 12:21:22.817: E/AndroidRuntime(1374): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
07-28 12:21:22.817: E/AndroidRuntime(1374): at dalvik.system.NativeStart.main(Native Method)
07-28 12:21:22.817: E/AndroidRuntime(1374): Caused by: java.lang.NullPointerException
07-28 12:21:22.817: E/AndroidRuntime(1374): at com.FJICC.lzm.MainActivity.onCreate(MainActivity.java:58)
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-28 12:21:22.817: E/AndroidRuntime(1374): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
07-28 12:21:22.817: E/AndroidRuntime(1374): ... 11 more
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[解决办法]
空指针异常，你这样贴这个出来没有人可以帮到你的，你至少还得把MainActivity代码贴出来，最好标注清楚MainActivity的第58行是哪个代码。
