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El botón Mi ubicación se muestra en la esquina inferior derecha de la vista del mapa. Cuando el usuario presiona el botón, el mapa se desplaza hasta su ubicación actual.
importGoogleMapsimportUIKitclassMyLocationViewController:UIViewController{privateletcameraLatitude:CLLocationDegrees=-33.868privateletcameraLongitude:CLLocationDegrees=151.2086privateletcameraZoom:Float=12lazyvarmapView:GMSMapView={letcamera=GMSCameraPosition(latitude:cameraLatitude,longitude:cameraLongitude,zoom:cameraZoom)returnGMSMapView(frame:.zero,camera:camera)}()varobservation:NSKeyValueObservation?varlocation:CLLocation?{didSet{guardoldValue==nil,letfirstLocation=locationelse{return}mapView.camera=GMSCameraPosition(target:firstLocation.coordinate,zoom:14)}}overridefuncviewDidLoad(){super.viewDidLoad()mapView.delegate=selfmapView.settings.compassButton=truemapView.settings.myLocationButton=truemapView.isMyLocationEnabled=trueview=mapView// Listen to the myLocation property of GMSMapView.observation=mapView.observe(\.myLocation,options:[.new]){[weakself]mapView,_inself?.location=mapView.myLocation}}deinit{observation?.invalidate()}}extensionMyLocationViewController:GMSMapViewDelegate{funcmapView(_mapView:GMSMapView,didTapMyLocationlocation:CLLocationCoordinate2D){letalert=UIAlertController(title:"Location Tapped",message:"Current location: <\(location.latitude), \(location.longitude)>",preferredStyle:.alert)alert.addAction(UIAlertAction(title:"OK",style:.default))present(alert,animated:true)}}
#import "GoogleMapsDemos/Samples/MyLocationViewController.h"#import <GoogleMaps/GoogleMaps.h>@implementationMyLocationViewController{GMSMapView*_mapView;BOOL_firstLocationUpdate;}-(void)viewDidLoad{[superviewDidLoad];GMSCameraPosition*camera=[GMSCameraPositioncameraWithLatitude:-33.868longitude:151.2086zoom:12];_mapView=[GMSMapViewmapWithFrame:CGRectZerocamera:camera];_mapView.delegate=self;_mapView.settings.compassButton=YES;_mapView.settings.myLocationButton=YES;// Listen to the myLocation property of GMSMapView.[_mapViewaddObserver:selfforKeyPath:@"myLocation"options:NSKeyValueObservingOptionNewcontext:NULL];self.view=_mapView;// Ask for My Location data after the map has already been added to the UI.GMSMapView*mapView=_mapView;dispatch_async(dispatch_get_main_queue(),^{mapView.myLocationEnabled=YES;});}-(void)mapView:(GMSMapView*)mapViewdidTapMyLocation:(CLLocationCoordinate2D)location{NSString*message=[NSStringstringWithFormat:@"My Location Dot Tapped at: [lat: %f, lng: %f]",location.latitude,location.longitude];UIAlertController*alertController=[UIAlertControlleralertControllerWithTitle:@"Location Tapped"message:messagepreferredStyle:UIAlertControllerStyleAlert];UIAlertAction*okAction=[UIAlertActionactionWithTitle:@"OK"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction*action){}];[alertControlleraddAction:okAction];[selfpresentViewController:alertControlleranimated:YEScompletion:nil];}-(void)dealloc{[_mapViewremoveObserver:selfforKeyPath:@"myLocation"context:NULL];}#pragma mark - KVO updates-(void)observeValueForKeyPath:(NSString*)keyPathofObject:(id)objectchange:(NSDictionary*)changecontext:(void*)context{if(!_firstLocationUpdate){// If the first location update has not yet been received, then jump to that location._firstLocationUpdate=YES;CLLocation*location=[changeobjectForKey:NSKeyValueChangeNewKey];_mapView.camera=[GMSCameraPositioncameraWithTarget:location.coordinatezoom:14];}}@end
La app de ejemplo del SDK de Maps para iOS está disponible como archivo de descarga en GitHub. Sigue estos pasos para instalar y probar la app de ejemplo del SDK de Maps para iOS.
Ejecuta git clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.git para clonar el repositorio de muestras en un directorio local.
Abre una ventana de terminal, navega al directorio en el que clonaste los archivos de muestra y desplázate hacia abajo hasta el directorio 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
En Xcode, presiona el botón de compilación para compilar la app con el esquema actual. La compilación genera un error que te solicita que ingreses tu clave de API en el archivo SDKConstants.swift para Swift o en el archivoSDKDemoAPIKey.h para Objective-C.
Edita el archivo SDKConstants.swift para Swift o el archivo SDKDemoAPIKey.h para Objective-C y pega tu clave de API en la definición de la constante apiKey o kAPIKey. Por ejemplo:
Swift
static let apiKey = "YOUR_API_KEY"
Objective-C
staticNSString*constkAPIKey=@"YOUR_API_KEY";
En el archivo SDKConstants.swift (Swift) o en el archivo SDKDemoAPIKey.h (Objective-C), quita la siguiente línea, ya que se usa para registrar el problema definido por el usuario:
Swift
#error (Register for API Key and insert here. Then delete this line.)
Objective-C
#error Register for API Key and insert here.
Compila y ejecuta el proyecto. Aparecerá la ventana del simulador de iOS, que mostrará una lista de demostraciones del SDK de Maps.
Elige una de las opciones que se muestran para experimentar con una función del SDK de Maps para iOS.
Si se te solicita que permitas que GoogleMapsDemos acceda a tu ubicación, elige Permitir.
[[["Fácil de comprender","easyToUnderstand","thumb-up"],["Resolvió mi problema","solvedMyProblem","thumb-up"],["Otro","otherUp","thumb-up"]],[["Falta la información que necesito","missingTheInformationINeed","thumb-down"],["Muy complicado o demasiados pasos","tooComplicatedTooManySteps","thumb-down"],["Desactualizado","outOfDate","thumb-down"],["Problema de traducción","translationIssue","thumb-down"],["Problema con las muestras o los códigos","samplesCodeIssue","thumb-down"],["Otro","otherDown","thumb-down"]],["Última actualización: 2025-07-26 (UTC)"],[[["\u003cp\u003eThe "My Location" button, located in the bottom right corner of the map, centers the map on the user's current location when tapped.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code samples (Swift and Objective-C) demonstrate how to implement the "My Location" functionality within a map view.\u003c/p\u003e\n"],["\u003cp\u003eTo run the sample code, you'll need to configure your development environment, including obtaining and integrating a Google Maps API key.\u003c/p\u003e\n"],["\u003cp\u003eThe full sample app can be downloaded and explored to experiment with various features of the Maps SDK for iOS.\u003c/p\u003e\n"]]],["The content describes implementing a \"My Location\" feature in a map view using the Google Maps SDK for iOS. When enabled, a button appears, allowing the user to center the map on their current location upon tapping. The code examples show how to set up the map, enable the \"My Location\" button and feature, and observe changes to the user's location. Additionally, it details setting up a project and API key. It also describes setting up a tap handler on the current user's location in the map.\n"],null,["The **My Location** button is displayed in the bottom right corner of the map view. When the user taps the button, the map pans to the user's current location.\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\nclass MyLocationViewController: UIViewController {\n\n private let cameraLatitude: CLLocationDegrees = -33.868\n\n private let cameraLongitude: CLLocationDegrees = 151.2086\n\n private let cameraZoom: Float = 12\n\n lazy var mapView: GMSMapView = {\n let camera = GMSCameraPosition(\n latitude: cameraLatitude, longitude: cameraLongitude, zoom: cameraZoom)\n return GMSMapView(frame: .zero, camera: camera)\n }()\n\n var observation: NSKeyValueObservation?\n var location: CLLocation? {\n didSet {\n guard oldValue == nil, let firstLocation = location else { return }\n mapView.camera = GMSCameraPosition(target: firstLocation.coordinate, zoom: 14)\n }\n }\n\n override func viewDidLoad() {\n super.viewDidLoad()\n\n mapView.delegate = self\n mapView.settings.compassButton = true\n mapView.settings.myLocationButton = true\n mapView.isMyLocationEnabled = true\n view = mapView\n\n // Listen to the myLocation property of GMSMapView.\n observation = mapView.observe(\\.myLocation, options: [.new]) {\n [weak self] mapView, _ in\n self?.location = mapView.myLocation\n }\n }\n\n deinit {\n observation?.invalidate()\n }\n}\n\nextension MyLocationViewController: GMSMapViewDelegate {\n func mapView(_ mapView: GMSMapView, didTapMyLocation location: CLLocationCoordinate2D) {\n let alert = UIAlertController(\n title: \"Location Tapped\",\n message: \"Current location: \u003c\\(location.latitude), \\(location.longitude)\u003e\",\n preferredStyle: .alert)\n alert.addAction(UIAlertAction(title: \"OK\", style: .default))\n present(alert, animated: true)\n }\n}https://github.com/googlemaps-samples/maps-sdk-for-ios-samples/blob/5092537f1ae5f51e9a7fd0ab6523d52f06a5b8a9/GoogleMaps-Swift/GoogleMapsSwiftDemos/Swift/Samples/MyLocationViewController.swift#L14-L69\n \n```\n\nObjective-C \n\n```objective-c\n#import \"GoogleMapsDemos/Samples/MyLocationViewController.h\"\n\n#import \u003cGoogleMaps/GoogleMaps.h\u003e\n\n@implementation MyLocationViewController {\n GMSMapView *_mapView;\n BOOL _firstLocationUpdate;\n}\n\n- (void)viewDidLoad {\n [super viewDidLoad];\n GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-33.868\n longitude:151.2086\n zoom:12];\n\n _mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];\n _mapView.delegate = self;\n _mapView.settings.compassButton = YES;\n _mapView.settings.myLocationButton = YES;\n\n // Listen to the myLocation property of GMSMapView.\n [_mapView addObserver:self\n forKeyPath:@\"myLocation\"\n options:NSKeyValueObservingOptionNew\n context:NULL];\n\n self.view = _mapView;\n\n // Ask for My Location data after the map has already been added to the UI.\n GMSMapView *mapView = _mapView;\n dispatch_async(dispatch_get_main_queue(), ^{\n mapView.myLocationEnabled = YES;\n });\n}\n\n- (void)mapView:(GMSMapView *)mapView didTapMyLocation:(CLLocationCoordinate2D)location {\n NSString *message = [NSString stringWithFormat:@\"My Location Dot Tapped at: [lat: %f, lng: %f]\",\n location.latitude, location.longitude];\n UIAlertController *alertController =\n [UIAlertController alertControllerWithTitle:@\"Location Tapped\"\n message:message\n preferredStyle:UIAlertControllerStyleAlert];\n UIAlertAction *okAction = [UIAlertAction actionWithTitle:@\"OK\"\n style:UIAlertActionStyleDefault\n handler:^(UIAlertAction *action){\n }];\n [alertController addAction:okAction];\n [self presentViewController:alertController animated:YES completion:nil];\n}\n\n- (void)dealloc {\n [_mapView removeObserver:self forKeyPath:@\"myLocation\" context:NULL];\n}\n\n#pragma mark - KVO updates\n\n- (void)observeValueForKeyPath:(NSString *)keyPath\n ofObject:(id)object\n change:(NSDictionary *)change\n context:(void *)context {\n if (!_firstLocationUpdate) {\n // If the first location update has not yet been received, then jump to that location.\n _firstLocationUpdate = YES;\n CLLocation *location = [change objectForKey:NSKeyValueChangeNewKey];\n _mapView.camera = [GMSCameraPosition cameraWithTarget:location.coordinate zoom:14];\n }\n}\n\n@end \nhttps://github.com/googlemaps-samples/maps-sdk-for-ios-samples/blob/5092537f1ae5f51e9a7fd0ab6523d52f06a5b8a9/GoogleMaps/GoogleMapsDemos/Samples/MyLocationViewController.m#L16-L84\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**."]]
