Get started
Before you can try the sample code, you must configure your development environment. For more information, see Maps SDK for iOS code samples.
View the code
Swift
import GoogleMaps import UIKit final class MarkerEventsViewController: UIViewController { private lazy var mapView: GMSMapView = { let camera = GMSCameraPosition(latitude: -37.81969, longitude: 144.966085, zoom: 4) return GMSMapView(frame: .zero, camera: camera) }() private var melbourneMarker = GMSMarker( position: CLLocationCoordinate2D(latitude: -37.81969, longitude: 144.966085)) override func loadView() { let sydneyMarker = GMSMarker( position: CLLocationCoordinate2D(latitude: -33.8683, longitude: 151.2086)) sydneyMarker.map = mapView melbourneMarker.map = mapView mapView.delegate = self view = mapView } } extension MarkerEventsViewController: GMSMapViewDelegate { func mapView(_ mapView: GMSMapView, markerInfoWindow marker: GMSMarker) -> UIView? { if marker == melbourneMarker { return UIImageView(image: UIImage(named: "Icon")) } return nil } func mapView(_ mapView: GMSMapView, didTap marker: GMSMarker) -> Bool { // Animate to the marker CATransaction.begin() CATransaction.setAnimationDuration(3) let camera = GMSCameraPosition(target: marker.position, zoom: 8, bearing: 50, viewingAngle: 60) mapView.animate(to: camera) CATransaction.commit() // Melbourne marker has a InfoWindow so return false to allow markerInfoWindow to // fire. Also check that the marker isn't already selected so that the InfoWindow // doesn't close. if marker == melbourneMarker && mapView.selectedMarker != melbourneMarker { return false } return true } }
Objective-C
#import "GoogleMapsDemos/Samples/MarkerEventsViewController.h" #import <QuartzCore/QuartzCore.h> #import <GoogleMaps/GoogleMaps.h> @implementation MarkerEventsViewController { GMSMapView *_mapView; GMSMarker *_melbourneMarker; BOOL _rotating; } - (void)viewDidLoad { [super viewDidLoad]; GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-37.81969 longitude:144.966085 zoom:4]; _mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera]; GMSMarker *sydneyMarker = [[GMSMarker alloc] init]; sydneyMarker.position = CLLocationCoordinate2DMake(-33.8683, 151.2086); sydneyMarker.map = _mapView; _melbourneMarker = [[GMSMarker alloc] init]; _melbourneMarker.position = CLLocationCoordinate2DMake(-37.81969, 144.966085); _melbourneMarker.map = _mapView; _mapView.delegate = self; self.view = _mapView; } #pragma mark - GMSMapViewDelegate - (UIView *)mapView:(GMSMapView *)mapView markerInfoWindow:(GMSMarker *)marker { if (marker == _melbourneMarker) { return [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Icon"]]; } return nil; } - (BOOL)mapView:(GMSMapView *)mapView didTapMarker:(GMSMarker *)marker { GMSCameraPosition *camera = [[GMSCameraPosition alloc] initWithTarget:marker.position zoom:8 bearing:50 viewingAngle:60]; // Animate to the marker [CATransaction begin]; [CATransaction setAnimationDuration:3.f]; // 3 second animation [CATransaction setCompletionBlock:^{ if (_rotating) { // Animation was interrupted by orientation change. [CATransaction setDisableActions:true]; // Disable animation to avoid interruption from rotation. [_mapView animateToCameraPosition:camera]; } }]; [mapView animateToCameraPosition:camera]; [CATransaction commit]; // Melbourne marker has a InfoWindow so return NO to allow markerInfoWindow to fire. Also check // that the marker isn't already selected so that the InfoWindow doesn't close. if (marker == _melbourneMarker && mapView.selectedMarker != _melbourneMarker) { return NO; } // The Tap has been handled so return YES return YES; } - (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator { _rotating = true; [coordinator animateAlongsideTransition:nil completion:^( id<UIViewControllerTransitionCoordinatorContext> _Nonnull context) { _rotating = false; }]; [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator]; } @end
Run the full sample app locally
The Maps SDK for iOS sample app is available as a download archive from GitHub. Follow these steps to install and try the Maps SDK for iOS sample app.
- Run
git clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.git
to clone the samples repository into a local directory. Open a terminal window, navigate to the directory where you cloned the sample files, and drill down into the GoogleMaps directory:
Swift
cd maps-sdk-for-ios-samples-main/GoogleMaps-Swift
pod install
open GoogleMapsSwiftDemos.xcworkspace
Objective-C
cd maps-sdk-for-ios-samples-main/GoogleMaps
pod install
open GoogleMapsDemos.xcworkspace
- In Xcode, press the compile button to
build the app
with the current scheme. The build produces an error, prompting you to enter your API key
in the
SDKConstants.swift
file for Swift orSDKDemoAPIKey.h
file for Objective-C. - If you don't yet have an API key, follow the
instructions to set up
a project on the Google Cloud Console and get an API key. When configuring the
key on the Cloud Console, you can
restrict the key to the
sample app's bundle identifier to
ensure that only your app can use the key. The default bundle identifier of
the SDK samples app is
com.example.GoogleMapsDemos
. - Edit the
SDKConstants.swift
file for Swift orSDKDemoAPIKey.h
file for Objective-C and paste your API key into the definition of either theapiKey
orkAPIKey
constant. For example:Swift
static let apiKey = "YOUR_API_KEY"
Objective-C
static NSString *const kAPIKey = @"YOUR_API_KEY";
- In the
SDKConstants.swift
file (Swift) orSDKDemoAPIKey.h
file (Objective-C), remove the following line, because it's used to register the user-defined issue:Swift
#error (Register for API Key and insert here. Then delete this line.)
Objective-C
#error Register for API Key and insert here.
- Build and run the project. The iOS simulator window appears, showing a list of Maps SDK Demos.
- Choose one of the options displayed, to experiment with a feature of the Maps SDK for iOS.
- If prompted to allow GoogleMapsDemos to access your location, choose Allow.