MKMapView Zoom to Fit Overlays

Question

I have an circle overlay on my MKMap, which the user can change the radius of. How can I make it so when the radius is changed the Map will automatically zoom to fit the new radius size.

I have tried:

_mapView.visibleMapRect = circleOverlay.boundingMapRect;

But it zooms in too far and the stroke around my circle overlay is cut off at the top and bottom. Can someone give me any help on how to fix this please?

David Berry · Accepted Answer · 2014-05-07T22:40:40.750

11

Try:

_mapView.visibleMapRect = [_mapView mapRectThatFits:circleOverlay.boundingMapRect];

or even mapRectThatFits:edgePadding: to get a little extra space around the edges.

edited May 07 '14 at 22:40

answered May 07 '14 at 22:32

David Berry

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I get an error when I try that line: No visible @interface for 'MKMapView' declares the selector 'rectThatFits' What does that mean? – Stephen Bennett May 07 '14 at 22:34
Sorry, it's mapRectThatFits:, fixing the answer. – David Berry May 07 '14 at 22:40
Thank you very much, it has fixed it! Thank you so much for the quick response too! Really appreciate it! – Stephen Bennett May 07 '14 at 22:57

score 2 · Answer 2 · answered Nov 25 '18 at 02:10

2

In addition to David Berry's answer, this lets you animate the zoom:

[self.mapView setVisibleMapRect:[self.mapView mapRectThatFits:circleOverlay.boundingMapRect] edgePadding:UIEdgeInsetsMake(5.0f, 5.0f, 5.0f, 5.0f) animated:YES];

answered Nov 25 '18 at 02:10

Stewart Macdonald

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MKMapView Zoom to Fit Overlays

2 Answers2