Google Maps zoom out to GPS and markers - ios

Question

I am trying to show three things on map :
GPS (the current location) , Marker 1 , Marker 2, but I am not sure I am doing it right or not ! Here is my code :
self.startMarker.position = CLLocationCoordinate2D(latitude: self.startLatitude, longitude: self.startLongitude)
self.startMarker.icon = #imageLiteral(resourceName: "Pin Start")
self.startMarker.map = self.mapView
self.endMarker.position = CLLocationCoordinate2D(latitude: self.endLatitude, longitude: self.endLongitude)
self.endMarker.icon = #imageLiteral(resourceName: "Pin End")
self.endMarker.map = self.mapView
let southWest = CLLocationCoordinate2DMake(self.startLatitude,self.startLongitude)
let northEast = CLLocationCoordinate2DMake(self.endLatitude,self.endLongitude)
let bounds = GMSCoordinateBounds(coordinate: northEast, coordinate: southWest)
let camera = self.mapView.camera(for: bounds, insets:.zero)
self.mapView.camera = camera!
More Code :
// MARK: - Google Map
private func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
if status == CLAuthorizationStatus.authorizedWhenInUse {
mapView.isMyLocationEnabled = true
}
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let newLocation = locations.last
mapView.camera = GMSCameraPosition.camera(withTarget: newLocation!.coordinate, zoom: 14)
mapView.isMyLocationEnabled = true
}
The result is like this :
What I need :
EDITED
if let myLocation = self.mapView.myLocation {
let path = GMSMutablePath()
path.add(myLocation.coordinate)
path.add(self.startMarker.position)
path.add(self.endMarker.position)
let bounds = GMSCoordinateBounds(path: path)
self.mapView.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 40))
}

Answer 1

Showing All Markers with screen bound:
Here I am trying to provide you one simple example, hope this will help you.
Using this, you can show any number of markers on screen.
Example:
let path = GMSMutablePath()
for var i in 0 ..< array.count //Here take your "array" which contains lat and long.
{
let marker = GMSMarker()
let lat = Double(array.objectAtIndex(i).valueForKey(lattitude) as! String)
let long = Double(arrayr.objectAtIndex(i).valueForKey(longitude) as! String)
marker.position = CLLocationCoordinate2DMake(lat!,long!)
path.addCoordinate(marker.position)
marker.map = self.mapView
}
let bounds = GMSCoordinateBounds(path: path)
self.mapView!.animateWithCameraUpdate(GMSCameraUpdate.fitBounds(bounds, withPadding: 30.0))

Answer 2

Can you try the below code, this is converted from ObjC code here is the documentation of includingCoordinate
let bounds = GMSCoordinateBounds()
bounds.includingCoordinate(self.startMarker.position)
bounds.includingCoordinate(self.endMarker.position)
bounds.includingCoordinate(yourCurrentLocationPosition)
self.mapView.animateWithCameraUpdate(GMSCameraUpdate(fitBounds:bounds, padding:20.0f))

Answer 3

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
showMarkers(locations)
//stop updating location when you find suitable
}
func showMarkers(userLocation: [CLLocation]){
let location1: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: self.startLatitude, longitude: self.startLongitude)
let location2: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: self.endLatitude, longitude: self.endLongitude)
let location3: CLLocationCoordinate2D = userLocation[0].coordinate
var locationArray = []
locationArray.append(location1)
locationArray.append(location2)
locationArray.append(location3)
var bounds = GMSCoordinateBounds()
for location in locationArray
{
let latitude = location.valueForKey("latitude")
let longitude = location.valueForKey("longitude")
let marker = GMSMarker()
marker.position = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
marker.map = self.mapView
bounds = bounds.includingCoordinate(marker.position)
}
let update = GMSCameraUpdate.fitBounds(bounds, withPadding: 100)
mapView.animateWithCameraUpdate(update)
}
Note:
locationArray contains three locations ie. Marker 1, Marker 2, user location.

Answer 4

For someone who is looking for solution with Objective-C, This might help
//Locations
CLLocationCoordinate2D source = CLLocationCoordinate2DMake(19.2880, 72.1587);
CLLocationCoordinate2D userLocation = CLLocationCoordinate2DMake(19.1780, 72.9577);
CLLocationCoordinate2D destination = CLLocationCoordinate2DMake(19.0760, 72.8777);
//Create a GMSMutablePath
GMSMutablePath *path = [GMSMutablePath new];
[path addCoordinate:source];
[path addCoordinate:userLocation];
[path addCoordinate:destination];
//Create bounds
GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc]initWithPath:path];
//Update the camera position
[mapview animateWithCameraUpdate:[GMSCameraUpdate fitBounds:bounds]];