UIImageView in UIScrollView Compositing Flashing
Originator: | oliver.drobnik | ||
Number: | rdar://19323748 | Date Originated: | 22 Dec 2014 |
Status: | Open | Resolved: | |
Product: | iOS | Product Version: | iOS 8.1.2 (12B440) |
Classification: | Other Bug | Reproducible: | Always |
Summary: An image view as content of a scroll view shows flashing white lines at the right and bottom corners while being zoomed. Steps to Reproduce: - Have a single-view app that: - has a scroll view - with an image view - that shows an image and - allows zooming run on iPhone 6 or iPhone 6 Simulator Expected Results: - while zooming there should be no visual artefacts Actual Results: - while zooming white lines appear on the right and bottom edges of the image view - A screenshot of the problem is attached. You can see the white lines on it. Version: iOS 8.1.2 (12B440) Notes: I looked if these white lines are from a background color that is "shining through", but that does not appear to be the case. A workaround I found is that you can set the image view's layer's border width to 2.0 and the border color to black. This will mask the white lines.
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