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This example displays a map with pins for markers on Sydney and Melbourne,
Australia.
Get started
Before you can try the sample code, you must configure your development environment.
For more information, seeMaps SDK for iOS code samples.
View the code
Swift
importGoogleMapsimportUIKit// Sample code for adding a marker.classMarkersViewController:UIViewController{privatelazyvarsydneyMarker=GMSMarker(position:CLLocationCoordinate2D(latitude:-33.8683,longitude:151.2086))privatelazyvarmelbourneMarker=GMSMarker(position:CLLocationCoordinate2D(latitude:-37.81969,longitude:144.966085))privatelazyvarmapView:GMSMapView={letcamera=GMSCameraPosition(latitude:-37.81969,longitude:144.966085,zoom:4)returnGMSMapView(frame:.zero,camera:camera)}()overridefuncloadView(){view=mapViewsydneyMarker.title="Sydney"sydneyMarker.snippet="Population: 4,605,992"sydneyMarker.isFlat=falsesydneyMarker.rotation=30print("sydneyMarker:\(sydneyMarker)")letaustraliaMarker=GMSMarker(position:CLLocationCoordinate2D(latitude:-27.994401,longitude:140.07019))australiaMarker.title="Australia"australiaMarker.appearAnimation=.popaustraliaMarker.isFlat=trueaustraliaMarker.isDraggable=trueaustraliaMarker.groundAnchor=CGPoint(x:0.5,y:0.5)australiaMarker.icon=UIImage(named:"australia")australiaMarker.map=mapViewmapView.selectedMarker=sydneyMarkernavigationItem.rightBarButtonItem=UIBarButtonItem(barButtonSystemItem:.add,target:self,action:#selector(tapAdd))}@objcfunctapAdd(){ifsydneyMarker.map==nil{sydneyMarker.map=mapView}else{sydneyMarker.map=nil}melbourneMarker.title="Melbourne"melbourneMarker.snippet="Population: 4,169,103"melbourneMarker.map=mapView}}
#import "GoogleMapsDemos/Samples/MarkersViewController.h"#import <GoogleMaps/GoogleMaps.h>@implementationMarkersViewController{GMSMarker*_sydneyMarker;GMSMarker*_melbourneMarker;GMSMarker*_fadeInMarker;}-(void)viewDidLoad{[superviewDidLoad];GMSCameraPosition*camera=[GMSCameraPositioncameraWithLatitude:-37.81969longitude:144.966085zoom:4];GMSMapView*mapView=[GMSMapViewmapWithFrame:CGRectZerocamera:camera];_sydneyMarker=[[GMSMarkeralloc]init];_sydneyMarker.title=@"Sydney";_sydneyMarker.snippet=@"Population: 4,605,992";_sydneyMarker.position=CLLocationCoordinate2DMake(-33.8683,151.2086);_sydneyMarker.flat=NO;_sydneyMarker.rotation=30.0;NSLog(@"sydneyMarker: %@",_sydneyMarker);GMSMarker*australiaMarker=[[GMSMarkeralloc]init];australiaMarker.title=@"Australia";australiaMarker.position=CLLocationCoordinate2DMake(-27.994401,140.07019);australiaMarker.appearAnimation=kGMSMarkerAnimationPop;australiaMarker.flat=YES;australiaMarker.draggable=YES;australiaMarker.groundAnchor=CGPointMake(0.5,0.5);australiaMarker.icon=[UIImageimageNamed:@"australia"];australiaMarker.map=mapView;_fadeInMarker=[[GMSMarkeralloc]init];_fadeInMarker.title=@"Australia";_fadeInMarker.position=CLLocationCoordinate2DMake(-29.9959,145.0719);_fadeInMarker.appearAnimation=kGMSMarkerAnimationFadeIn;_fadeInMarker.icon=[UIImageimageNamed:@"australia"];// Set the marker in Sydney to be selectedmapView.selectedMarker=_sydneyMarker;self.view=mapView;self.navigationItem.rightBarButtonItem=[[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAddtarget:selfaction:@selector(didTapAdd)];}-(void)didTapAdd{if(_sydneyMarker.map==nil){_sydneyMarker.map=(GMSMapView*)self.view;}else{_sydneyMarker.map=nil;}_melbourneMarker.map=nil;_melbourneMarker=[[GMSMarkeralloc]init];_melbourneMarker.title=@"Melbourne";_melbourneMarker.snippet=@"Population: 4,169,103";_melbourneMarker.position=CLLocationCoordinate2DMake(-37.81969,144.966085);_melbourneMarker.map=(GMSMapView*)self.view;if(_fadeInMarker.map){_fadeInMarker.map=nil;}else{_fadeInMarker.map=(GMSMapView*)self.view;}}@end
The Maps SDK for iOS sample app is available as adownload archivefromGitHub.
Follow these steps to install and try the Maps SDK for iOS sample app.
Rungit clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.gitto 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-Swiftpod installopen GoogleMapsSwiftDemos.xcworkspace
Objective-C
cd maps-sdk-for-ios-samples-main/GoogleMapspod installopen GoogleMapsDemos.xcworkspace
In Xcode, press the compile button tobuild the appwith the current scheme. The build produces an error, prompting you to enter your API key
in theSDKConstants.swiftfile for Swift orSDKDemoAPIKey.hfile for Objective-C.
Edit theSDKConstants.swiftfile for Swift orSDKDemoAPIKey.hfile for Objective-C and paste your API key into the definition of either theapiKeyorkAPIKeyconstant. For example:
Swift
static let apiKey = "YOUR_API_KEY"
Objective-C
staticNSString*constkAPIKey=@"YOUR_API_KEY";
In theSDKConstants.swiftfile (Swift) orSDKDemoAPIKey.hfile (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 ofMaps 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, chooseAllow.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis example demonstrates how to add markers to a map using the Google Maps SDK for iOS.\u003c/p\u003e\n"],["\u003cp\u003eThe sample code showcases adding markers for Sydney and Melbourne with custom properties like titles, snippets, and icons.\u003c/p\u003e\n"],["\u003cp\u003eYou must configure your development environment with an API key before running the code.\u003c/p\u003e\n"],["\u003cp\u003eComplete instructions are provided for cloning the sample code repository, installing dependencies, and running the application on an iOS simulator.\u003c/p\u003e\n"]]],[],null,["This example displays a map with pins for markers on Sydney and Melbourne, Australia.\n\nGet started\n\nBefore you can try the sample code, you must configure your development environment.\nFor more information, see [Maps SDK for iOS code samples](/maps/documentation/ios-sdk/examples).\n\nView the code \n\nSwift \n\n```swift\nimport GoogleMaps\nimport UIKit\n\n// Sample code for adding a marker.\nclass MarkersViewController: UIViewController {\n private lazy var sydneyMarker = GMSMarker(\n position: CLLocationCoordinate2D(latitude: -33.8683, longitude: 151.2086))\n\n private lazy var melbourneMarker = GMSMarker(\n position: CLLocationCoordinate2D(latitude: -37.81969, longitude: 144.966085))\n\n private lazy var mapView: GMSMapView = {\n let camera = GMSCameraPosition(latitude: -37.81969, longitude: 144.966085, zoom: 4)\n return GMSMapView(frame: .zero, camera: camera)\n }()\n\n override func loadView() {\n view = mapView\n\n sydneyMarker.title = \"Sydney\"\n sydneyMarker.snippet = \"Population: 4,605,992\"\n sydneyMarker.isFlat = false\n sydneyMarker.rotation = 30\n print(\"sydneyMarker: \\(sydneyMarker)\")\n\n let australiaMarker = GMSMarker(\n position: CLLocationCoordinate2D(latitude: -27.994401, longitude: 140.07019))\n australiaMarker.title = \"Australia\"\n australiaMarker.appearAnimation = .pop\n australiaMarker.isFlat = true\n australiaMarker.isDraggable = true\n australiaMarker.groundAnchor = CGPoint(x: 0.5, y: 0.5)\n australiaMarker.icon = UIImage(named: \"australia\")\n australiaMarker.map = mapView\n\n mapView.selectedMarker = sydneyMarker\n navigationItem.rightBarButtonItem = UIBarButtonItem(\n barButtonSystemItem: .add, target: self, action: #selector(tapAdd))\n }\n\n @objc func tapAdd() {\n if sydneyMarker.map == nil {\n sydneyMarker.map = mapView\n } else {\n sydneyMarker.map = nil\n }\n melbourneMarker.title = \"Melbourne\"\n melbourneMarker.snippet = \"Population: 4,169,103\"\n melbourneMarker.map = mapView\n }\n}https://github.com/googlemaps-samples/maps-sdk-for-ios-samples/blob/86408feffd008565cd2cafce8aff3dc27f1f41bb/GoogleMaps-Swift/GoogleMapsSwiftDemos/Swift/Samples/MarkersViewController.swift#L14-L64\n \n```\n\nObjective-C \n\n```objective-c\n#import \"GoogleMapsDemos/Samples/MarkersViewController.h\"\n\n#import \u003cGoogleMaps/GoogleMaps.h\u003e\n\n@implementation MarkersViewController {\n GMSMarker *_sydneyMarker;\n GMSMarker *_melbourneMarker;\n GMSMarker *_fadeInMarker;\n}\n\n- (void)viewDidLoad {\n [super viewDidLoad];\n GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-37.81969\n longitude:144.966085\n zoom:4];\n GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];\n\n _sydneyMarker = [[GMSMarker alloc] init];\n _sydneyMarker.title = @\"Sydney\";\n _sydneyMarker.snippet = @\"Population: 4,605,992\";\n _sydneyMarker.position = CLLocationCoordinate2DMake(-33.8683, 151.2086);\n _sydneyMarker.flat = NO;\n _sydneyMarker.rotation = 30.0;\n NSLog(@\"sydneyMarker: %@\", _sydneyMarker);\n\n GMSMarker *australiaMarker = [[GMSMarker alloc] init];\n australiaMarker.title = @\"Australia\";\n australiaMarker.position = CLLocationCoordinate2DMake(-27.994401, 140.07019);\n australiaMarker.appearAnimation = kGMSMarkerAnimationPop;\n australiaMarker.flat = YES;\n australiaMarker.draggable = YES;\n australiaMarker.groundAnchor = CGPointMake(0.5, 0.5);\n australiaMarker.icon = [UIImage imageNamed:@\"australia\"];\n australiaMarker.map = mapView;\n\n _fadeInMarker = [[GMSMarker alloc] init];\n _fadeInMarker.title = @\"Australia\";\n _fadeInMarker.position = CLLocationCoordinate2DMake(-29.9959, 145.0719);\n _fadeInMarker.appearAnimation = kGMSMarkerAnimationFadeIn;\n _fadeInMarker.icon = [UIImage imageNamed:@\"australia\"];\n\n // Set the marker in Sydney to be selected\n mapView.selectedMarker = _sydneyMarker;\n\n self.view = mapView;\n self.navigationItem.rightBarButtonItem =\n [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd\n target:self\n action:@selector(didTapAdd)];\n}\n\n- (void)didTapAdd {\n if (_sydneyMarker.map == nil) {\n _sydneyMarker.map = (GMSMapView *)self.view;\n } else {\n _sydneyMarker.map = nil;\n }\n\n _melbourneMarker.map = nil;\n _melbourneMarker = [[GMSMarker alloc] init];\n _melbourneMarker.title = @\"Melbourne\";\n _melbourneMarker.snippet = @\"Population: 4,169,103\";\n _melbourneMarker.position = CLLocationCoordinate2DMake(-37.81969, 144.966085);\n _melbourneMarker.map = (GMSMapView *)self.view;\n\n if (_fadeInMarker.map) {\n _fadeInMarker.map = nil;\n } else {\n _fadeInMarker.map = (GMSMapView *)self.view;\n }\n}\n\n@end \nhttps://github.com/googlemaps-samples/maps-sdk-for-ios-samples/blob/86408feffd008565cd2cafce8aff3dc27f1f41bb/GoogleMaps/GoogleMapsDemos/Samples/MarkersViewController.m#L16-L88\n\n \n```\n\nRun the full sample app locally\n\nThe Maps SDK for iOS sample app is available as a\n[download archive](https://github.com/googlemaps-samples/maps-sdk-for-ios-samples/archive/main.zip)\nfrom [GitHub](https://github.com/googlemaps-samples/maps-sdk-for-ios-samples/tree/main/GoogleMaps).\nFollow these steps to install and try the Maps SDK for iOS sample app.\n\n1. Run `git clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.git` to clone the samples repository into a local directory.\n2. Open a terminal window, navigate to the directory where you cloned the sample files, and\n drill down into the GoogleMaps directory:\n\n Swift \n\n cd maps-sdk-for-ios-samples-main/GoogleMaps-Swift\n pod install\n open GoogleMapsSwiftDemos.xcworkspace\n\n Objective-C \n\n cd maps-sdk-for-ios-samples-main/GoogleMaps\n pod install\n open GoogleMapsDemos.xcworkspace\n\n3. In Xcode, press the compile button to [build the app](https://developer.apple.com/documentation/xcode/building-and-running-an-app) with the current scheme. The build produces an error, prompting you to enter your API key in the `SDKConstants.swift` file for Swift or`SDKDemoAPIKey.h` file for Objective-C.\n4. [Get an API key](/maps/documentation/ios-sdk/get-api-key) from your project with the [Maps SDK for iOS enabled](/maps/documentation/ios-sdk/cloud-setup#enabling-apis).\n5. Edit the `SDKConstants.swift` file for Swift or`SDKDemoAPIKey.h` file for Objective-C and paste your API key into the definition of either the `apiKey` or `kAPIKey` constant. For example: \n\n Swift \n\n ```scdoc\n static let apiKey = \"YOUR_API_KEY\"\n ```\n\n Objective-C \n\n ```objective-c\n static NSString *const kAPIKey = @\"YOUR_API_KEY\";\n ```\n6. In the `SDKConstants.swift` file (Swift) or`SDKDemoAPIKey.h` file (Objective-C), remove the following line, because it's used to register the user-defined issue: \n\n Swift \n\n ```text\n #error (Register for API Key and insert here. Then delete this line.)\n ```\n\n Objective-C \n\n ```text\n #error Register for API Key and insert here.\n ```\n7. Build and run the project. The iOS simulator window appears, showing a list of **Maps SDK Demos**.\n8. Choose one of the options displayed, to experiment with a feature of the Maps SDK for iOS.\n9. If prompted to allow GoogleMapsDemos to access your location, choose **Allow**."]]
