07-07 04:11:15.040: D/AndroidRuntime(1297): Shutting down VM
07-07 04:11:15.040: W/dalvikvm(1297): threadid=1: thread exiting with uncaught exception (group=0xb3acaba8)
07-07 04:11:15.060: E/AndroidRuntime(1297): FATAL EXCEPTION: main
07-07 04:11:15.060: E/AndroidRuntime(1297): Process: com.example.hallo4, PID: 1297
07-07 04:11:15.060: E/AndroidRuntime(1297): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hallo4/com.example.hallo4.MainActivity}: java.lang.NullPointerException
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.app.ActivityThread.performLaunchActivity(A ctivityThread.java:2195)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.app.ActivityThread.handleLaunchActivity(Ac tivityThread.java:2245)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.app.ActivityThread.access$800(ActivityThre ad.java:135)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.app.ActivityThread$H.handleMessage(Activit yThread.java:1196)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.os.Handler.dispatchMessage(Handler.java:10 2)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.os.Looper.loop(Looper.java:136)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.app.ActivityThread.main(ActivityThread.jav a:5017)
07-07 04:11:15.060: E/AndroidRuntime(1297): at java.lang.reflect.Method.invokeNative(Native Method)
07-07 04:11:15.060: E/AndroidRuntime(1297): at java.lang.reflect.Method.invoke(Method.java:515)
07-07 04:11:15.060: E/AndroidRuntime(1297): at com.android.internal.os.ZygoteInit$MethodAndArgsCa ller.run(ZygoteInit.java:779)
07-07 04:11:15.060: E/AndroidRuntime(1297): at com.android.internal.os.ZygoteInit.main(ZygoteInit .java:595)
07-07 04:11:15.060: E/AndroidRuntime(1297): at dalvik.system.NativeStart.main(Native Method)
07-07 04:11:15.060: E/AndroidRuntime(1297): Caused by: java.lang.NullPointerException
07-07 04:11:15.060: E/AndroidRuntime(1297): at com.example.hallo4.MainActivity.onCreate(MainActiv ity.java:25)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.app.Activity.performCreate(Activity.java:5 231)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.app.Instrumentation.callActivityOnCreate(I nstrumentation.java:1087)
07-07 04:11:15.060: E/AndroidRuntime(1297): at android.app.ActivityThread.performLaunchActivity(A ctivityThread.java:2159)
07-07 04:11:15.060: E/AndroidRuntime(1297): ... 11 more
07-07 04:11:19.760: I/Process(1297): Sending signal. PID: 1297 SIG: 9