Xcode 6.3.2: MKAnnotationView’s “centerOffset” property documentation
| Originator: | SlaunchaMan | ||
| Number: | rdar://21610850 | Date Originated: | 30-Jun-2015 10:28 AM |
| Status: | Open | Resolved: | |
| Product: | Developer Tools | Product Version: | Xcode 6.3.2 (6D2105) |
| Classification: | Other Bug | Reproducible: | Always |
Summary:
According to the documentation for MKAnnotationView, the “centerOffset” is in pixels. In practice, it’s in points.
Steps to Reproduce:
1. Create an MKMapView and add several annotations to it.
2. In the delegate callback, create an MKAnnotationView for each annotation with an image.
3. Set the center offset to {0, -(imageHeightInPixels / 2)} to place the annotation view’s bottom center at the annotation’s location on the map.
4. Zoom the map in and out.
Expected Results:
The annotation views will remain anchored to their locations.
Actual Results:
Because the image height was specified in pixels, not points, on Retina displays the annotations will move around unexpectedly.
Comments
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