scrollToRowAtIndexPath:atScrollPosition:animated: is broken when using estimatedRowHeight
Originator: | padraig.kennedy | ||
Number: | rdar://20829131 | Date Originated: | 05-May-2015 05:15 PM |
Status: | Open | Resolved: | |
Product: | iOS SDK | Product Version: | 8.3 |
Classification: | UI/Usability | Reproducible: | Always |
Summary: If a tableView uses estimatedRowHeight, scrollToRowAtIndexPath:atScrollPosition:animated will not scroll to the correct location in the tableview. Steps to Reproduce: 1. Create a table with lots of cells. 2. Provide an `estimatedRowHeight` 3. Implement `tableView:heightForRowAtIndexPath:` and return a different value than `estimatedRowHeight` 4. Call `scrollToRowAtIndexPath:atScrollPosition:animated` to go to the last cell Expected Results: You should now be at the bottom of the table. Actual Results: If the total for all estimated heights is > actual heights, we zoom past the end and get a blank screen. If the total for all estimated heights is < actual heights, we don't reach the end — the scroller is not 100% of the way. The results differ between `animated` being YES or NO, but neither behaviour correct puts the cell onscreen.
Comments
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Duplicated radar was closed, so I resubmitted
Engineering has determined that your bug report (20829131) is a duplicate of another issue (15283329) and will be closed.
Test project here: https://github.com/PadraigK/estimatedRowHeightFail/tree/master