back key 관련 질문인데...이게 무슨 에러인가요?? ㅠㅠ

Question

어플에서 back key 를 누르면 데이타를 전송하도록 구현했는데요...

처음 back key 를 누르면 정상적으로 전송하는데...

다시 진입해서 back key 를 누르면 전송하다가 아래와 같은 에러를 내뱉고 죽어버리네요... ㅠㅠ

 

 

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08-11 22:47:58.007: E/AndroidRuntime(5931): FATAL EXCEPTION: main

08-11 22:47:58.007: E/AndroidRuntime(5931): Process: com.testapp.testapp, PID: 5931

08-11 22:47:58.007: E/AndroidRuntime(5931): java.lang.NullPointerException

08-11 22:47:58.007: E/AndroidRuntime(5931):  at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1425)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at android.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:480)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at android.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:495)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at android.app.Activity.onBackPressed(Activity.java:2259)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at com.testapp.hlcappv2.delivery.PageTestCompleteActivity.parsingData(PageTestCompleteActivity.java:1253)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at com.testapp.hlcappv2.delivery.PageTestCompleteActivity.access$26(PageTestCompleteActivity.java:1128)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at com.testapp.hlcappv2.delivery.PageTestCompleteActivity$18.onReceiveMessage(PageTestCompleteActivity.java:180)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at com.testapp.hlcappv2.network.NetworkManager$5.run(NetworkManager.java:163)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at android.os.Handler.handleCallback(Handler.java:733)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at android.os.Handler.dispatchMessage(Handler.java:95)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at android.os.Looper.loop(Looper.java:136)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at android.app.ActivityThread.main(ActivityThread.java:5103)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at java.lang.reflect.Method.invokeNative(Native Method)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at java.lang.reflect.Method.invoke(Method.java:515)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:606)

08-11 22:47:58.007: E/AndroidRuntime(5931):  at dalvik.system.NativeStart.main(Native Method)

 

Answer 1

FATAL EXCEPTION: main
Process: com.testapp.testapp, PID: 5931
java.lang.NullPointerException
 at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1425)
 at android.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:480)
 at android.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:495)
 at android.app.Activity.onBackPressed(Activity.java:2259)
 at com.testapp.hlcappv2.delivery.PageTestCompleteActivity.parsingData(PageTestCompleteActivity.java:1253)
 at com.testapp.hlcappv2.delivery.PageTestCompleteActivity.access$26(PageTestCompleteActivity.java:1128)
 at com.testapp.hlcappv2.delivery.PageTestCompleteActivity$18.onReceiveMessage(PageTestCompleteActivity.java:180)
 at com.testapp.hlcappv2.network.NetworkManager$5.run(NetworkManager.java:163)
 at android.os.Handler.handleCallback(Handler.java:733)
 at android.os.Handler.dispatchMessage(Handler.java:95)
 at android.os.Looper.loop(Looper.java:136)
 at android.app.ActivityThread.main(ActivityThread.java:5103)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:515)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:606)
 at dalvik.system.NativeStart.main(Native Method)

하아.... 불필요한 시간 부분은 다 빼고 올려주면 좋으련만.... 

 

 

com.testapp.hlcappv2.delivery.PageTestCompleteActivity.parsingData(PageTestCompleteActivity.java:1253)

에서 null 변수를 호출했네요