How to draw line between two annotations in map view swift ios?

Question

let latitude = NSUserDefaults.standardUserDefaults().doubleForKey(klat)
let longitude = NSUserDefaults.standardUserDefaults().doubleForKey(klong)

let location = CLLocationCoordinate2DMake(latitude, longitude)

// Second Location lat and long
let latitudeSec: CLLocationDegrees = 10.0100
let longitudeSec: CLLocationDegrees = 76.3620

let locationSec = CLLocationCoordinate2DMake(latitudeSec, longitudeSec)
let span = MKCoordinateSpanMake(1, 1)
let region = MKCoordinateRegionMake(location, span)

mapView.setRegion(region, animated: true)

I have two locations(lat and long) with two annotations. I need to know how to draw the line between these two annonations on MKMap?

Dear.. Have you did any type of googing? or just paste question here.? — Er.Shreyansh Shah, Feb 04 '16 at 06:07
First Search on google, If not found than ask question here. You can find this type of solution easily. — Er.Shreyansh Shah, Feb 04 '16 at 06:09
@RakeshMohan it will helpful you http://stackoverflow.com/questions/24798737/how-to-use-mkpolylineview-in-swift — sandy, Feb 04 '16 at 06:37
I am new to swift. So I am facing difficulty in understanding the code. Could you please helm with my code @Sandy? — Rakesh Mohan, Feb 04 '16 at 06:54

score 1 · Answer 1 · answered Oct 27 '21 at 17:14

Create an array of [CLLocationCoordinate2D], convert to MKPolyline and add to map.

If you have a CLLocation could get CLLocationCoordinate2D from CLLocation.coordinate

In your case...

let pointArry = [location, locationSec]  
let myPolyline = MKPolyline(coordinates: pointArray, count: pointArray.count)
mapView.addOverlay(myPolyline)

//MARK:  MKMapViewDelegate Method (make sure class has been set as delegate)
func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
    if overlay.isKind(of: MKPolyline.self) {
        // draw the track
        let polyLine = overlay
        let polyLineRenderer = MKPolylineRenderer(overlay: polyLine)
        polyLineRenderer.strokeColor = UIColor.blue
        polyLineRenderer.lineWidth = 2.0
        
        return polyLineRenderer
    }
    
    return MKPolylineRenderer()
}

How to draw line between two annotations in map view swift ios?

1 Answers1