Swift 3: How to remove the tracked polyline in Google map

Question

I have draw the polylines, but I don\'t no that what coding can remove the tracked polyline in the google map. I\'m trying some coding in below.

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this is no wor

Answer 1

Maybe a better solution: define your routePolyline as an optional variable then each time you want assign it a path, check it with if let... and set map to nil

if let routePolyline = routePolyline {
        routePolyline.map = nil
    }

// create new polyline
let path: GMSPath = GMSPath(fromEncodedPath: p)!
routePolyline = GMSPolyline(path: path)
routePolyline?.map = mapView