iTunes-like outline view using core data?
iTunes-like outline view using core data?
- Subject: iTunes-like outline view using core data?
- From: "Carter R. Harrison" <email@hidden>
- Date: Sun, 5 Aug 2007 17:50:38 -0400
I'm trying to setup an iTunes-like outlineview with a core data
application. The goal is to have heading cells (like the "Library",
"Store", and "Playlist") that draw differently from their contents in
the tree. So far what I've tried to do is have an abstract core data
entity (we'll call it "abstractOutlineEntity"). Then I have two
concrete entities that have "abstractOutlineEntity" as their parent
object. In my nib file, I have the outlineview set to hold
"abstractOutlineEntity" entities. As for the two concrete entities,
one of them is supposed to act as a heading cell in the outlineview,
and the other is supposed to act as a child cell. This seemed like
the logical way to do this - b/c the outlineview is set to hold
"abstractOutlineEntity" entities which my concrete entities are.
Now when my app launches I can correctly display the heading cells,
but when I try to create a child object using a custom subclass, the
child object appears correctly as a child in the outlineview like it
should, but it also appears a second time as a root level object.
I've tried to draw the resulting tree below after trying to add a new
child object. Does anybody have any idea how to prevent this?
Thanks in advance.
-Library (heading cell)
-Playlists (heading cell)
- My Cool Playlist (child cell)
-My Cool Playlist (appearing again as a heading cell - not what i want)
Regards,
Carter
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