From the course: Advanced iOS App Development: MapKit & Core Location

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Circle overlays

Circle overlays - iOS Tutorial

From the course: Advanced iOS App Development: MapKit & Core Location

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Circle overlays

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- [Instructor] Sometimes, we don't need a point for annotation, but instead an area, line, or tile. To show those on a map, we use an overlay. Overlays setup a lot like annotations. We start with an overlay of a object, and then the MapKit delegate method for overlays, tell the system what overlays views go where. Overlays can have several standard shapes. You can use circles, polygons, and poly lines as built in shapes, plus the tile overlay. I'll introduce overlays with circles. Let's suppose we want to show a delivery area using a circle as the delivery area. We need an instance of MK circle class to do that. Based on a center point, and a radius. I'll use the coordinate of the restaurant as our center, and a distance in meters, which becomes the radius of our circle. Close the app. And head over to the instant methods for the overlays where I have a nice little mark. And we're going to add a new function here. Add delivery overlay. And I'm going to make a radius of 1,600 meters…

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