Hi,
Given an IKImageBrowserView that is populated with valid
IKImageBrowserItem, calling 'reloadData' on the image browser view
does not actually reload the data for me. The documentation says that
it "Marks the receiver as needing its data reloaded" but how and when
does the reload actually take place?
My application is a Core Data application and I initially thought the
problem was related to bindings and updating of the managed object
behind the image views back, but then I came across the sample code at
apple.dev and realized that the problem still existed:
http://developer.apple.com/samplecode/IKImageBrowserViewWithCoreData
So then I boiled it down to the most basic scenario I could think of
and the problem still exists. I can trigger this "bug" with something
as simple as an image view backed by data source that just returns
IKImageBrowserItem, who's imageRepresentationType is
IKImageBrowserPathRepresentationType and who's imageRepresentation is
just a path on the local file system.
The following is reproducible for me. Hopefully I'm just missing
something obvious. Comments are welcome.
1. Launch application
2. Populate image browser view with two items who return 'nil' when
asked for their imageRepresentation. (ImageBrowser will correctly show
the empty box for each.)
3. Click on a button that simply calls a method that assigns a valid
path to each item. (The path represents an image on the disk.)
4. Call reloadData on the image browser and the empty boxes will
correctly be replaced with the appropriate images.
5. Now, replace each items path with another valid path on the
filesystem that points to a different photo.
6. Call reloadData.
7. This time, the images are not updated.
In fact, no matter what I seem to do, the only time I can actually get
the image browser to reload the data is when the items don't return a
valid imageRepresentation. All other times, the image browser view
seems to ignore my requests for a reload, and doesn't even call any of
the IKImageBrowserItem methods at all. (Though it does if the items
are initially nill).
So, if the image browser view is already populated with valid items,
the reload appears to fail for me. If the image browser view is
populated with items that have an invalid imageRepresentation, the
reload appears to work.
Thoughts?
Sincerely,
Kenny
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