Thanks for the quick response! That's what I also thought, but then I get these exceptions. I glanced at the Android sources, and here is what I *think* is going on if I use managed cursors:
- Cursor returned by FilterQueryProvider#runQuery() is passed on to SimpleQueryAdapter#changeCursor() - changeCursor() calls close() on the *previous* cursor (which is also managed) - However, this is not reflected in any way in Activity#mManagedCursors (mReleased is still false) - If the activity is paused, then Activity#performStop() deactivates all managed cursors and sets them to be requeried on resume - When the activity resumes, Activity#performRestart() tries to requery those closed cursors and the application dies As far as I can tell, there is no hook in FilterQueryProvider (or elsewhere), where I can call Activity#stopManagingCursor() on the old cursor to avoid this. Also, it seems there is no way to iterate over the managed cursors in onPause() to perform a post-mortem cleanup (no accessor for Activity#mManagedCursors). Or am I missing something? Thanks, Spiros On Feb 10, 7:17 pm, Romain Guy <romain...@google.com> wrote: > It's up to you. If you don't use managed cursors, you will have to > close/query them yourself when the activity is > destroyed/created/stopped, etc. > > > > On Tue, Feb 10, 2009 at 4:14 PM, Spiros <spapa...@gmail.com> wrote: > > > Hi, > > > I'm using an autocomplete box, with suggestions provided by a > > SimpleQueryAdapter, almost identical to the code in this thread: > > http://groups.google.com/group/android-developers/browse_thread/threa... > > Not sure if relevant, but only difference I see is that, both in the > > adapter constructor, as well as in runQuery(), I use a cursor returned > > by SQLiteDatabase#query() obtained via an SQLiteOpenHelper instance. > > > Should I be using Activity#startManagingCursor() on these cursors or > > not? > > > If I don't use managed cursors, then I get "leak found" warnings > > ("database was created [sic] but never closed"). > > > If I do then, if the application pauses (e.g., incoming call) and then > > resumes, I get an unhandled exception ("attempted to requery closed > > cursor" thrown by Activity#performRestart(), in Activity.java:3333 -- > > SDK 1.0_r2, btw). > > > What am I missing? > > > Thanks! > > Spiros > > -- > Romain Guy > Android framework engineer > romain...@android.com > > Note: please don't send private questions to me, as I don't have time > to provide private support. All such questions should be posted on > public forums, where I and others can see and answer them --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
