安卓代码不知道哪里错了，急用

Question

05-20 23:44:38.505: W/dalvikvm(804): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
05-20 23:44:38.516: E/AndroidRuntime(804): FATAL EXCEPTION: main
05-20 23:44:38.516: E/AndroidRuntime(804): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.wumenglong/com.example.wumenglong.StartActivity}: java.lang.NullPointerException
05-20 23:44:38.516: E/AndroidRuntime(804): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.app.ActivityThread.access$600(ActivityThread.java:141)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.os.Handler.dispatchMessage(Handler.java:99)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.os.Looper.loop(Looper.java:137)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.app.ActivityThread.main(ActivityThread.java:5041)
05-20 23:44:38.516: E/AndroidRuntime(804): at java.lang.reflect.Method.invokeNative(Native Method)
05-20 23:44:38.516: E/AndroidRuntime(804): at java.lang.reflect.Method.invoke(Method.java:511)
05-20 23:44:38.516: E/AndroidRuntime(804): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-20 23:44:38.516: E/AndroidRuntime(804): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-20 23:44:38.516: E/AndroidRuntime(804): at dalvik.system.NativeStart.main(Native Method)
05-20 23:44:38.516: E/AndroidRuntime(804): Caused by: java.lang.NullPointerException
05-20 23:44:38.516: E/AndroidRuntime(804): at com.example.wumenglong.StartActivity.onCreate(StartActivity.java:98)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.app.Activity.performCreate(Activity.java:5104)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
05-20 23:44:38.516: E/AndroidRuntime(804): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
05-20 23:44:38.516: E/AndroidRuntime(804): ... 11 more

Answer 1

再启动StartActivity的时候出错了，检测你的StartActivity和xml文件哪里存在错误。