Thanks for your help. But i still don't understand exactly what i'm
doing wrong.
I'm navigating from Activity1 to Activity2. Then i navigate back to
Activity1 by pushing the Back-Button. You say i should overwrite
onPause() on Activity2 to release its resources. So the error has
nothing to do with Activity1? But i'm already using a managed Cursor
plus i'm calling Cursor.close() in onPause() (just to be sure) in
Activity2. Other Cursors i am using in other classes also get released
(by calling close()) immediately after gathering information from
them. so i don't know what i am doing wrong...is close() the wrong
function to call?
Do i have to release other resources as well? such as
ContentProviders? i found out that ContentResolver got a new method
called releaseProvider(IContentProvider icp). But it's not documented
yet. should it be used to release the ContentProviders?
just because i'm interested:
why does the system try to acquire a reference on a Cursor if an
activity gets closed anyway? i'm getting the following
RuntimeException (which gets caused by the Exception i posted
earlier):
java.lang.RuntimeException: Unable to resume activity {my.package/
my.package.Activity2}: java.lang.IllegalStateException: attempt to
acquire a reference on a close SQLiteClosable
Why does the system tell me that it's unable to resume an Activity
which i just wanted to close by pushing the back button? and what is a
"close SQLiteClosable"? shouldn't it read "closeD SQLiteClosable?" And
if i release Cursors by calling close(), aren't these also "close
SQLiteClosables" which can't be acquired? i just dont get it...
I would be happy to get more information about what the system is
doing between the Activities and why those strange error messages
occur
Thanks a lot
Simon
On Aug 19, 6:05 pm, "Justin (Google Employee)" <[EMAIL PROTECTED]>
wrote:
> My guess would be that you have an SQLite cursor that you're not
> releasing when your Activity loses focus. I believe you have two
> options.
>
> You say that you've tried to handle this in callback functions
> onRestart, onResume, etc. The problem is you're looking at the wrong
> end of the lifecycle. When the user hits the 'back' key, onPause is
> called. In onPause you should handling releasing resources and any
> other tear-down you need to do. I'd suggest reviewing the Activity
> lifecycle information
> (http://code.google.com/android/reference/android/app/Activity.html
> ) .
>
> The other option is to use a managed cursor. To do this call
> Activity.startManagingCursor(yourCursor).
>
> Cheers,
> Justin
> Android Team @ Google
>
> On Aug 19, 7:16 am, simon <[EMAIL PROTECTED]> wrote:
>
> > Hi all!
> > First of all i wanted to say thank you to Google for the new SDK!
> > Lookin forward to the phones!
>
> > now to my problem:
> > as soon as i push the back button in some of my application's
> > activities, i get the following error:
>
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): Caused by:
> > java.lang.IllegalStateException: attempt to acquire a reference on a
> > close SQLiteClosable
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): at
> > android.database.sqlite.SQLiteClosable.acquireReference(SQLiteClosable.java:
> > 31)
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): at
> > android.database.sqlite.SQLiteProgram.compile(SQLiteProgram.java:109)
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): at
> > android.database.sqlite.SQLiteQuery.requery(SQLiteQuery.java:129)
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): at
> > android.database.sqlite.SQLiteCursor.requery(SQLiteCursor.java:389)
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): at
> > android.database.CursorWrapper.requery(CursorWrapper.java:214)
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): at
> > android.app.Activity.performRestart(Activity.java:3330)
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): at
> > android.app.Activity.performResume(Activity.java:3350)
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): at
> > android.app.ActivityThread.performResumeActivity(ActivityThread.java:
> > 2482)
> > 08-19 14:10:13.050: ERROR/AndroidRuntime(1183): ... 10 more
>
> > What does that mean? and is there a workaround? i already tried
> > different callback functions (onRestart(), onResume(),
> > onRestoreInstanceState()) but none gets called before the error
> > occurs. how can i do something before that error occurs? and what
> > should i do against it once i get a callback? i don't understand the
> > error message. it worked on m5, but 0.9 just won't do it.
>
> > please help me. Thanx a lot!
>
>
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