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Questo esempio mostra una mappa con segnaposto per Sydney e Melbourne, in Australia.
Inizia
Prima di poter provare il codice di esempio, devi configurare il tuo ambiente di sviluppo. Per ulteriori informazioni, consulta la sezione Esempi di codice di Maps SDK for iOS.
Visualizza il codice
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
L'app di esempio Maps SDK for iOS è disponibile come archivio di download da GitHub. Segui questi passaggi per installare e provare l'app di esempio Maps SDK for iOS.
Esegui git clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.git per clonare il repository di esempi in una directory locale.
Apri una finestra del terminale, vai alla directory in cui hai clonato i file di esempio e visualizza la directory GoogleMaps:
Swift
cd maps-sdk-for-ios-samples-main/GoogleMaps-Swift pod installopen GoogleMapsSwiftDemos.xcworkspace
Objective-C
cd maps-sdk-for-ios-samples-main/GoogleMaps pod installopen GoogleMapsDemos.xcworkspace
In Xcode, premi il pulsante di compilazione per compilare l'app con lo schema corrente. La compilazione genera un errore e ti chiede di inserire la chiave API nel file SDKConstants.swift per Swift o nel file SDKDemoAPIKey.h per Objective-C.
Modifica il file SDKConstants.swift per Swift o il fileSDKDemoAPIKey.h per Objective-C e incolla la tua chiave API nella definizione della costante apiKey o kAPIKey. Ad esempio:
Swift
static let apiKey = "YOUR_API_KEY"
Objective-C
staticNSString*constkAPIKey=@"YOUR_API_KEY";
Nel file SDKConstants.swift (Swift) oSDKDemoAPIKey.h (Objective-C), rimuovi la riga seguente, perché viene utilizzata per registrare il problema definito dall'utente:
Swift
#error (Register for API Key and insert here. Then delete this line.)
Objective-C
#error Register for API Key and insert here.
Compila ed esegui il progetto. Viene visualizzata la finestra del simulatore iOS, che mostra un elenco di demo di Maps SDK.
Scegli una delle opzioni visualizzate per provare una funzionalità di Maps SDK for iOS.
Se ti viene chiesto di consentire a GoogleMapsDemos di accedere alla tua posizione, scegli Consenti.
[[["Facile da capire","easyToUnderstand","thumb-up"],["Il problema è stato risolto","solvedMyProblem","thumb-up"],["Altra","otherUp","thumb-up"]],[["Mancano le informazioni di cui ho bisogno","missingTheInformationINeed","thumb-down"],["Troppo complicato/troppi passaggi","tooComplicatedTooManySteps","thumb-down"],["Obsoleti","outOfDate","thumb-down"],["Problema di traduzione","translationIssue","thumb-down"],["Problema relativo a esempi/codice","samplesCodeIssue","thumb-down"],["Altra","otherDown","thumb-down"]],["Ultimo aggiornamento 2025-08-27 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**."]]