How to fit bounds for coordinate array with google maps sdk for iOS?

Question

How to fit bounds for coordinate array with google maps sdk for iOS? I need to zoom map for 4 visible markers.

Answer 1

Here's my solution for this problem. Building a GMSCoordinateBounds object by multiple coordinates.

- (void)focusMapToShowAllMarkers {            CLLocationCoordinate2D myLocation = ((GMSMarker *)_markers.firstObject).position;     GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc] initWithCoordinate:myLocation coordinate:myLocation];      for (GMSMarker *marker in _markers)         bounds = [bounds includingCoordinate:marker.position];      [_mapView animateWithCameraUpdate:[GMSCameraUpdate fitBounds:bounds withPadding:15.0f]]; } 

Updated answer: Since GMSMapView markers property is deprecated, you should save all markers in your own array.

updated swift 3 answer:

    func focusMapToShowAllMarkers() {         let firstLocation = (markers.first as GMSMarker).position         var bounds = GMSCoordinateBoundsWithCoordinate(firstLocation, coordinate: firstLocation)          for marker in markers {             bounds = bounds.includingCoordinate(marker.position)         }         let update = GMSCameraUpdate.fitBounds(bounds, withPadding: CGFloat(15))         self.mapView.animate(cameraUpdate: update)   } 

Answer 2

Swift 3.0 version of Lirik's answer:

func focusMapToShowAllMarkers() {     let myLocation: CLLocationCoordinate2D = self.markers.first!.position     var bounds: GMSCoordinateBounds = GMSCoordinateBounds(coordinate: myLocation, coordinate: myLocation)      for marker in self.markers {         bounds = bounds.includingCoordinate(marker.position)         self.mapView.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 15.0))     } } 

And here's my own way:

func focusMapToShowMarkers(markers: [GMSMarker]) {      guard let currentUserLocation = self.locationManager.location?.coordinate else {         return     }      var bounds: GMSCoordinateBounds = GMSCoordinateBounds(coordinate: currentUserLocation,                                                           coordinate: currentUserLocation)      _ = markers.map {         bounds = bounds.includingCoordinate($0.position)         self.mapView.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 15.0))     } } 

And you can call my function above like so:

self.focusMapToShowMarkers(markers: [self.myLocationMarker, currentPokemonMarker])