안드로이드 개발 질문/답변
(글 수 45,052)
NotePad 예제를 따라하던중..
기존의 Title 가 Body 이외에 SubTitle 이라는것을 추가해서.. 저장하는 변형 예제를
공부중이었습니다..;
근데.. Insert 버튼만 누르면.. 요런 에러가 뜨면서 죽어버리네요;;
확인좀 부탁드려요;;;
기존의 Title 가 Body 이외에 SubTitle 이라는것을 추가해서.. 저장하는 변형 예제를
공부중이었습니다..;
근데.. Insert 버튼만 누르면.. 요런 에러가 뜨면서 죽어버리네요;;
확인좀 부탁드려요;;;
02-10 07:16:55.377: ERROR/AndroidRuntime(313): FATAL EXCEPTION: main
02-10 07:16:55.377: ERROR/AndroidRuntime(313): java.lang.RuntimeException: Unable to pause activity {kwh.cu.NotePad/kwh.cu.NotePad.NoteEdit}: java.lang.NullPointerException
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3348)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3305)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:3288)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.ActivityThread.access$2500(ActivityThread.java:125)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2044)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.os.Handler.dispatchMessage(Handler.java:99)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.os.Looper.loop(Looper.java:123)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.ActivityThread.main(ActivityThread.java:4627)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at java.lang.reflect.Method.invokeNative(Native Method)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at java.lang.reflect.Method.invoke(Method.java:521)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at dalvik.system.NativeStart.main(Native Method)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): Caused by: java.lang.NullPointerException
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at kwh.cu.NotePad.NoteEdit.saveState(NoteEdit.java:100)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at kwh.cu.NotePad.NoteEdit.onPause(NoteEdit.java:83)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.Activity.performPause(Activity.java:3842)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1190)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3335)
02-10 07:16:55.377: ERROR/AndroidRuntime(313): ... 12 more
2011.02.10 16:39:08
답변 감사해요..ㅠ;
onPause 과 관련된 문자 올려봐요..ㅠ;
@Override
protected void onPause() {
saveState();
super.onPause();
}
@Override
protected void onResume() {
populateFields();
super.onResume();
}
private void saveState(){
String title = mTitle.getText().toString();
String subtitle = mSubTitle.getText().toString();
String content = mContent.getText().toString();
if(mRowId == null)
{
long id = mDbHelper.createNote(title, subtitle, content);
if(id > 0){
mRowId = id;
}
}else{
mDbHelper.updateNote(mRowId, title, subtitle, content);
}
}
}
onPause(83번째줄) 에서 뭐가 null값인지 디버깅해보세요