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.

---

this is no wor

Answer 1

Below is the approach to remove travelled polyline from google map iOS Swift:

var oldPolyLines = [GMSPolyline]() /* Global Array Variable of your Class */

Put below code where you are parsing routes and getting new polyline from direction API.

if self.oldPolyLines.count > 0 {
    for polyline in self.oldPolyLines {
        polyline.map = nil
    }
}
self.oldPolyLines.append(yourNewPolyline)
yourNewPolyLine.map = self.mapView