Section header Reordering?

Question

Created Jun ’20

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Do these new collectionViews support reorderable sections?

That could save me from having to display an “edit sections” popover.

Answered by Frameworks Engineer in 616104022

There isn't a built-in interface or standard UI for reordering sections, but you should be able to build this interaction using the collection view API. One way to implement a list with reorderable sections would be to use the headerMode of .firstItemInSection, which causes the first cell in the section to be styled as a header. This is the recommended mode when building expandable/collapsible outlines. By using this header mode and a diffable section snapshot, you could collapse the items in the section, which would leave just the header cell, and then allow that header cell (representing the entire section) to be reordered within the collection view.

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Frameworks Engineer OP

Apple

Jun ’20

Accepted Answer

There isn't a built-in interface or standard UI for reordering sections, but you should be able to build this interaction using the collection view API. One way to implement a list with reorderable sections would be to use the headerMode of .firstItemInSection, which causes the first cell in the section to be styled as a header. This is the recommended mode when building expandable/collapsible outlines. By using this header mode and a diffable section snapshot, you could collapse the items in the section, which would leave just the header cell, and then allow that header cell (representing the entire section) to be reordered within the collection view.

2