제가 데이터베이스를 공부하고있는데요
예제를 분명히 그대로 코딩하고 문제없이 실행했는데 실행이되지않고 비정상 종료가되요 ㅠㅠ
로그 첨부하겠습니다.
04-05 16:57:53.955: ERROR/AndroidRuntime(641): FATAL EXCEPTION: main
04-05 16:57:53.955: ERROR/AndroidRuntime(641): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.imobile.sungjin/com.imobile.sungjin.TestActivity}: java.lang.NullPointerException
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.os.Handler.dispatchMessage(Handler.java:99)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.os.Looper.loop(Looper.java:123)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at java.lang.reflect.Method.invokeNative(Native Method)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at java.lang.reflect.Method.invoke(Method.java:521)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at dalvik.system.NativeStart.main(Native Method)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): Caused by: java.lang.NullPointerException
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at com.imobile.sungjin.TestActivity.onCreate(TestActivity.java:31)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
04-05 16:57:53.955: ERROR/AndroidRuntime(641): ... 11 more
무엇이문제일까요...ㅠ...고수님들 답변 부탁드립니다!!