You don't have to use Cursor with an expandable list view or any adapter
view. Do your own filtering and create an in-memory array of just the
albums you need, then change your adapter code to get data from this
array, instead of a cursor.
Perhaps there is a better way, but I can't think of one right now (like
creating your own Cursor class that intercepts calls to the real cursor,
filtering data on the fly, but that would get really messy really fast).
-- Kostya
22.05.2011 19:20, Gabriel Simões пишет:
Please, any idea/tip will be of great help!
I´m stuck on this one.
Tnx,
Gabriel Simões
On May 21, 9:49 pm, Gabriel Simões<[email protected]> wrote:
Hello,
I´ve been searching on the web and here for information but couldn´t
find anything related to this problem so I hope you can help me.
I´m retrieving information from 2 diferent content providers that are
related. Information from one content provider (songs list) should
define the rules to filter another group of info (albums).
I´m trying to create an expandablelistview where only the albums which
have mp3 files would be listed as headers, and the mp3 songs would be
in the second level list.
At first I tried to figure out a way of implementing ContentProvider
searches that would allow me to recover only the required data but I
couldn´t find a way to do it (use group by, relate both
contentproviders in the same query, ...). Then I tried to retrieve the
info and filter programatically but the Cursor class doesn't have
methods to remove or filter information.
After I tried to figure out a way to implement the rule in a
CursorAdapter but while I can customize the information handling, I
couln´t find a way of blocking some retrieved Cursor "lines" so I
could display only albums with at least one mp3 file.
Please, throw some light in here. How can I archive this result?
Thanks,
Gabriel Simões
--
Kostya Vasilyev -- http://kmansoft.wordpress.com
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