iOS: disabling highlighting for collection view items stops selection from working

Originator:avedesk
Number:rdar://28334424 Date Originated:16-Sep-2016 10:18 AM
Status:Open Resolved:resolved
Product:Developer Tools Product Version:9.3.5
Classification:Other Bug Reproducible:Always
 
Summary:
When returning no from -[collectionView:shouldHighlightItemAtIndexPath:], -[collectionView:didSelectItemAtIndexPath:] is also not called when tapping a cell. Should one be able to select a cell without highlighting? The docs don't mention that these are linked together.

Steps to Reproduce:
1. set up a collectionview
2. in its delegate return NO for -[collectionView:shouldHlighlightItemAtIndexPath:]
3. tap a cell

Expected Results:
1. -[collectionView:didSelectItemAtIndexPath:] _is_ called

Actual Results:
1. [-collectionView:didSelectItemAtIndexPath:] is not called.

Regression:

Notes:

Comments

This issue behaves as intended based on the following:

The sequence is:

  • if shouldHighlight == YES
  • didHighlight
  • shouldSelect
  • didSelect

Highlighting is pre-condition to selection.

By avedesk at Oct. 11, 2016, 9:37 p.m. (reply...)

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