Moving children in a sectioned TLTreeDataModel causes crash. about tlindexpathtools HOT 3 CLOSED

Hi PJ,

You are on the right track with your workaround. I had a "can't move item to new section" error in one of my collection views and used the same solution.

But the tree components don't support multiple sections. At least they didn't. I've just added experimental support for multiple sections using the -[TLTreeDataModel initWithTreeItemSections:collapsedNodeIdentifiers:] initializer. Please give it a try and I'll help you make it work if you have trouble.

I added a bit of documentation to TLTreeDataModel that you might find informative:

A data model representing a heirarchy of TLIndexPathTreeItem nodes in a given
collapsed stated. This class must be initialized by using one of the two initializers
defined here, providing either an array of top level TLIndexPathTreeItem nodes
or an array of TLIndexPathSectionInfos containing top level nodes (particularly
if empty sections are needed) and the current set of collapsed node identifiers.

These initializers flatten the heirarchy into the array of items to be displayed
in the table. This flattened data is passed up to the TLIndexPathDataModel
initializer and, thus, the basic data model APIs reflect only the flattened data
to be displayed. The full data heirarchy is retained in the treeItems
and treeItemSections properties.

This data model can be plugged into a TLTableViewController, but
one should normally use TLTreeTableViewController because it contains the
additional logic to manage the collapsed state of nodes as rows are expanded
and collapsed. It also provides a mechanism to lazy load nodes.

Hope that helps.

from tlindexpathtools.

Works great! Thanks a lot for the quick turn around on this new feature.

from tlindexpathtools.

You're welcome! Glad it worked for you.

from tlindexpathtools.