a little hack: added MediaStore.Audio.Media.ALBUM_KEY + " as '_id'"
and now it seems to work .... On May 22, 9:54 pm, Gabriel Simões <[email protected]> wrote: > Thanks once again Kostya, > > I came up with a cleaner solution that still has one thing left to > work: > > Instead of using Media.Audio.Album I got to using only > Media.Audio.Media. It works as expected but the lack of the "_id" > column now is giving my a big headache when loading the Adapter. > I tried to use > > String[] cols = new String[] { > "distinct " + MediaStore.Audio.Media.ALBUM_ID + " as > _id", > MediaStore.Audio.Media.ALBUM, > MediaStore.Audio.Media.ARTIST > }; > > But it simply doesn´t work. How can I fix the Adapter dependency of > _id so my expandablelistview works? > > Thanks, > Gabriel Simões > > On May 22, 2:42 pm, Kostya Vasilyev <[email protected]> wrote: > > > > > > > > > 22.05.2011 21:13, Gabriel Simões пишет: > > > > My second approach was to find a way to block the displaying of some > > > entries creating a custom adapter but while I can change the > > > information I couldn´t find a way to not display full entries. > > > Ok, here is how you could do filtering on the fly. > > > Assume the data set you get from CP in a cursor is like this: > > > 0 - mp3 > > 1 - mp3 > > 2 - no mp3 > > 3 - mp3 > > 4 - no mp3 > > > Look through the cursor, checking for mp3s, and create a parallel index > > array like this: > > > [ 0, 1, 3 ] > > > The array has the cursor positions where albums have mp3. > > > Now you have the count for the adapter's getCount method, which is the > > length of this array. The positions as seen by the list view are 0 > > through 2. > > > In getView / bindView, use the table above to find out the position for > > the original cursor: the 0th item is remapped to 0, 1 is mapped to 1, > > but 2 is mapped to 3. > > > -- Kostya > > > -- > > Kostya Vasilyev --http://kmansoft.wordpress.com -- 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
