How to set google map zoom level according to path & markers in swift - swift

Question

I am trying to show path in google maps from one place to another place I am getting something like this. but I need to show like this. Which means the whole path need to show & according to path on map, the zooming level should adjust
Here is the code which I tried to draw path from API. and here in let settingCam am setting camera to adjust to one of the location
func showingPathFromPickupLocToDropLoc(dropLat: Double, dropLong: Double){
let origin = "\(dropLat),\(dropLong)"
let destination = "\(dropLatitude),\(dropLongitude)"
let settingCam: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: CLLocationDegrees(dropLat), longitude: CLLocationDegrees(dropLong))
let url = URL(string: "https://maps.googleapis.com/maps/api/directions/json?origin=\(origin)&destination=\(destination)&key=\(NEWAPI.GOOGLE_APIKEY)")
URLSession.shared.dataTask(with: url!, completionHandler: {(data, response, error) in
if(error != nil){
print("error")
}else{
do{
let json = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as! [String : AnyObject]
if json["status"] as! String == "OK"{
let routes = json["routes"] as! [[String:AnyObject]]
OperationQueue.main.addOperation({
for route in routes{
let routeOverviewPolyline = route["overview_polyline"] as! [String:String]
let points = routeOverviewPolyline["points"]
let path = GMSPath.init(fromEncodedPath: points!)
self.PathFromPickupLocToDropLoc = GMSPolyline(path: path)
self.PathFromPickupLocToDropLoc.strokeColor = .gray
self.PathFromPickupLocToDropLoc.strokeWidth = 3.0
self.PathFromPickupLocToDropLoc.map = self.mapView
let camera = GMSCameraPosition.camera(withTarget: settingCam, zoom: 16.0)
self.mapView.animate(toLocation: settingCam)
self.mapView.animate(to: camera)
self.insertingMarkersFromPickupLocToDropLoc(dropLat: dropLat, dropLong: dropLong)
}
})
}
}catch let error as NSError{
print(error)
}
}
}).resume()
}

Answer 1

You need to do like this
DispatchQueue.main.async
{
if self.googleMap != nil
{
let bounds = GMSCoordinateBounds(path: path!)
self.googleMap!.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 50.0))
}
}