I think this is your code here: $MyCursorHelper$MyContentObserver.onChange(CursorTreeAdapter.java:503)
Looks like when you switching between activities and multiple data population tasks are going on, they have conflicting Cursor state in your onChange method. You might want to use a static flag to indicating the cursor operation state or something like that, or synchronize the block. On Tue, Jul 28, 2009 at 7:49 AM, Al Sutton<[email protected]> wrote: > > I keep hitting something which makes me wonder if I'm doing something > wrong. > > I have a few Activities, each of which has a ExpandableList and a > ResourceCursorTreeAdapter which is given a cursor from > Activity.managedQuery when the adapter is created in the onCreate > method of the activity. > > There is also a service which updates the data that the > ResourceCursorTreeAdapter has a Cursor to via the datas > ContentProvider. When there is no data in the provider the service may > download around 100 records and perform inserts. The ContentProvider > does fire a notifyChange on each insert. > > If I run the application in the emulator and switch between the > activities whilst the ContentProvider is populated I can sometimes > trigger the exception at the end of this email. If I wait until > everything has been populated I can't trigger the problem. > > The confusing part is that the stack trace doesn't doesn't reference > my code in any way. > > Anyone have any suggestions? > > Al. > > -- Exception -- > E/AndroidRuntime( 297): java.lang.IllegalStateException: attempt to > acquire a reference on a close SQLiteClosable > E/AndroidRuntime( 297): at > android.database.sqlite.SQLiteClosable.acquireReference > (SQLiteClosable.java:31) > E/AndroidRuntime( 297): at > android.database.sqlite.SQLiteProgram.compile(SQLiteProgram.java:109) > E/AndroidRuntime( 297): at > android.database.sqlite.SQLiteQuery.requery(SQLiteQuery.java:130) > E/AndroidRuntime( 297): at > android.database.sqlite.SQLiteCursor.requery(SQLiteCursor.java:389) > E/AndroidRuntime( 297): at > android.database.CursorWrapper.requery(CursorWrapper.java:211) > E/AndroidRuntime( 297): at android.widget.CursorTreeAdapter > $MyCursorHelper$MyContentObserver.onChange(CursorTreeAdapter.java:503) > E/AndroidRuntime( 297): at android.database.ContentObserver > $NotificationRunnable.run(ContentObserver.java:43) > E/AndroidRuntime( 297): at android.os.Handler.handleCallback > (Handler.java:542) > E/AndroidRuntime( 297): at android.os.Handler.dispatchMessage > (Handler.java:86) > E/AndroidRuntime( 297): at android.os.Looper.loop(Looper.java: > 123) > E/AndroidRuntime( 297): at android.app.ActivityThread.main > (ActivityThread.java:3739) > E/AndroidRuntime( 297): at > java.lang.reflect.Method.invokeNative(NativeMethod) > E/AndroidRuntime( 297): at java.lang.reflect.Method.invoke > (Method.java:515) > E/AndroidRuntime( 297): at com.android.internal.os.ZygoteInit > $MethodAndArgsCaller.run(ZygoteInit.java:739) > E/AndroidRuntime( 297): at > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:497) > E/AndroidRuntime( 297): at dalvik.system.NativeStart.main > (Native Method) > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
