ich habe (malwieder) ein Problem und zwar probiere ich eine datenbank zu erstellen. Klappt eigentlich auch ganz gut, nur in der Methode die die Daten in die Datenbank schreiben soll, bekomme ich beim return einen Fehler angezeigt.
hier mal der Code von der Betroffenen Methode
1public long createReminder(String title, String body, String reminderDateTime) { //long
2 ContentValues initialValues = new ContentValues();
3 initialValues.put(KEY_TITLE, title);
4 initialValues.put(KEY_BODY, body);
5 initialValues.put(KEY_DATE_TIME, reminderDateTime);
6
7
8 return mDb.insert(DATABASE_TABLE, null, initialValues); // java.lang.NullPointerException
9 }
2 ContentValues initialValues = new ContentValues();
3 initialValues.put(KEY_TITLE, title);
4 initialValues.put(KEY_BODY, body);
5 initialValues.put(KEY_DATE_TIME, reminderDateTime);
6
7
8 return mDb.insert(DATABASE_TABLE, null, initialValues); // java.lang.NullPointerException
9 }
Ich denke dass der Fehler eine NullPointerException beim return ist. Habe aber keine Idee wie ich das Problem löse. (Da in einer Datenbank keine leere zeile eingefügt werden kann, weise ich dieser extra den wert null zu [habs auch mit anderen werten probiert, selber fehler])
Hier mal der LogCat
106-28 05:23:16.725: W/KeyCharacterMap(331): No keyboard for id 0
206-28 05:23:16.725: W/KeyCharacterMap(331): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
306-28 05:23:18.115: D/dalvikvm(331): GC_EXTERNAL_ALLOC freed 68K, 52% free 2605K/5379K, external 2073K/2137K, paused 56ms
406-28 05:23:20.261: W/KeyCharacterMap(331): No keyboard for id 0
506-28 05:23:20.261: W/KeyCharacterMap(331): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
606-28 05:23:33.335: D/AndroidRuntime(331): Shutting down VM
706-28 05:23:33.335: W/dalvikvm(331): threadid=1: thread exiting with uncaught exception (group=0x40015560)
806-28 05:23:33.345: E/AndroidRuntime(331): FATAL EXCEPTION: main
906-28 05:23:33.345: E/AndroidRuntime(331): java.lang.NullPointerException
1006-28 05:23:33.345: E/AndroidRuntime(331): at de.schulplaner.terminplaner.RemindersDbAdapter.createReminder(RemindersDbAdapter.java:55)
1106-28 05:23:33.345: E/AndroidRuntime(331): at de.schulplaner.terminplaner.ReminderEditActivity.saveState(ReminderEditActivity.java:161)
1206-28 05:23:33.345: E/AndroidRuntime(331): at de.schulplaner.terminplaner.ReminderEditActivity.access$0(ReminderEditActivity.java:152)
1306-28 05:23:33.345: E/AndroidRuntime(331): at de.schulplaner.terminplaner.ReminderEditActivity$3.onClick(ReminderEditActivity.java:83)
1406-28 05:23:33.345: E/AndroidRuntime(331): at android.view.View.performClick(View.java:2485)
1506-28 05:23:33.345: E/AndroidRuntime(331): at android.view.View$PerformClick.run(View.java:9080)
1606-28 05:23:33.345: E/AndroidRuntime(331): at android.os.Handler.handleCallback(Handler.java:587)
1706-28 05:23:33.345: E/AndroidRuntime(331): at android.os.Handler.dispatchMessage(Handler.java:92)
1806-28 05:23:33.345: E/AndroidRuntime(331): at android.os.Looper.loop(Looper.java:123)
1906-28 05:23:33.345: E/AndroidRuntime(331): at android.app.ActivityThread.main(ActivityThread.java:3683)
2006-28 05:23:33.345: E/AndroidRuntime(331): at java.lang.reflect.Method.invokeNative(Native Method)
2106-28 05:23:33.345: E/AndroidRuntime(331): at java.lang.reflect.Method.invoke(Method.java:507)
2206-28 05:23:33.345: E/AndroidRuntime(331): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
2306-28 05:23:33.345: E/AndroidRuntime(331): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
2406-28 05:23:33.345: E/AndroidRuntime(331): at dalvik.system.NativeStart.main(Native Method)
206-28 05:23:16.725: W/KeyCharacterMap(331): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
306-28 05:23:18.115: D/dalvikvm(331): GC_EXTERNAL_ALLOC freed 68K, 52% free 2605K/5379K, external 2073K/2137K, paused 56ms
406-28 05:23:20.261: W/KeyCharacterMap(331): No keyboard for id 0
506-28 05:23:20.261: W/KeyCharacterMap(331): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
606-28 05:23:33.335: D/AndroidRuntime(331): Shutting down VM
706-28 05:23:33.335: W/dalvikvm(331): threadid=1: thread exiting with uncaught exception (group=0x40015560)
806-28 05:23:33.345: E/AndroidRuntime(331): FATAL EXCEPTION: main
906-28 05:23:33.345: E/AndroidRuntime(331): java.lang.NullPointerException
1006-28 05:23:33.345: E/AndroidRuntime(331): at de.schulplaner.terminplaner.RemindersDbAdapter.createReminder(RemindersDbAdapter.java:55)
1106-28 05:23:33.345: E/AndroidRuntime(331): at de.schulplaner.terminplaner.ReminderEditActivity.saveState(ReminderEditActivity.java:161)
1206-28 05:23:33.345: E/AndroidRuntime(331): at de.schulplaner.terminplaner.ReminderEditActivity.access$0(ReminderEditActivity.java:152)
1306-28 05:23:33.345: E/AndroidRuntime(331): at de.schulplaner.terminplaner.ReminderEditActivity$3.onClick(ReminderEditActivity.java:83)
1406-28 05:23:33.345: E/AndroidRuntime(331): at android.view.View.performClick(View.java:2485)
1506-28 05:23:33.345: E/AndroidRuntime(331): at android.view.View$PerformClick.run(View.java:9080)
1606-28 05:23:33.345: E/AndroidRuntime(331): at android.os.Handler.handleCallback(Handler.java:587)
1706-28 05:23:33.345: E/AndroidRuntime(331): at android.os.Handler.dispatchMessage(Handler.java:92)
1806-28 05:23:33.345: E/AndroidRuntime(331): at android.os.Looper.loop(Looper.java:123)
1906-28 05:23:33.345: E/AndroidRuntime(331): at android.app.ActivityThread.main(ActivityThread.java:3683)
2006-28 05:23:33.345: E/AndroidRuntime(331): at java.lang.reflect.Method.invokeNative(Native Method)
2106-28 05:23:33.345: E/AndroidRuntime(331): at java.lang.reflect.Method.invoke(Method.java:507)
2206-28 05:23:33.345: E/AndroidRuntime(331): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
2306-28 05:23:33.345: E/AndroidRuntime(331): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
2406-28 05:23:33.345: E/AndroidRuntime(331): at dalvik.system.NativeStart.main(Native Method)
Vielen Dank für Antworten!
lg Andreas
