On 13 Sty, 13:14, swebb99 <[email protected]> wrote:
> I have extended an SimpleCursorAdapter and define a
> FilterQueryProvider like so:
>
> setFilterQueryProvider(new FilterQueryProvider() {
> public Cursor runQuery(CharSequence constraint) {
> return getMatching(constraint);
> }
>
> });
>
> I can't see how the Cursor can be managed because this class is called
> from the a background thread via the CursorAdaptor class:
>
> public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
> if (mFilterQueryProvider != null) {
> return mFilterQueryProvider.runQuery(constraint);
> }
> return mCursor;
>
> }
>
> Now the documentation for this method states that:
>
> After this method returns the resulting cursor is passed to {@link
> #changeCursor(Cursor)} and the previous cursor is closed.
>
> As can be seen from the code that does not seem to be the case, infact
> nothing is done with the cursor and so it is left dangling and not
> closed.
>
> I tried to override the runQueryOnBackgrounfThread on my own extended
> Adapter and call changeCursor(c) in it however that results in an
> exception because this triggers off a chain of events which attempt to
> modify the associated adapters view not from the UI thread.
>
> So any idea's how I manage (close) the cursor returned from my filter?
>
> Thanks
hi,
first: you don't have to call setFilterQueryProvider with your custom
FilterQueryProvider class, just override runQueryOnBackgroundThread
method in your custom SimpleCursorAdapter adapter
second: override changeCursor in your adapter
@Override
public void changeCursor(Cursor c) {
Log.d(TAG, "changeCursor " + c);
super.changeCursor(c);
}
and you will see that changeCursor is indeed called (at least in 2.2
as i saw)
third: check super changeCursor(c) in CursorAdapter to see if
super.changeCursor(c) is really closing old cursor, if not close it in
your implementation
pskink
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