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Questo esempio crea una mappa centrata su Seattle, nello stato di Washington.
Inizia
Prima di poter provare il codice di esempio, devi configurare il tuo ambiente di sviluppo.
Per ulteriori informazioni, consulta i sample di codice di Maps SDK for iOS.
Visualizza il codice
Swift
import GoogleMaps
import UIKit
class BasicMapViewController: UIViewController {
var statusLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Seattle coordinates
let camera = GMSCameraPosition(latitude: 47.6089945, longitude: -122.3410462, zoom: 14)
let mapView = GMSMapView(frame: view.bounds, camera: camera)
mapView.delegate = self
view = mapView
navigationController?.navigationBar.isTranslucent = false
statusLabel = UILabel(frame: .zero)
statusLabel.alpha = 0.0
statusLabel.backgroundColor = .blue
statusLabel.textColor = .white
statusLabel.textAlignment = .center
view.addSubview(statusLabel)
statusLabel.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
statusLabel.topAnchor.constraint(equalTo: view.topAnchor),
statusLabel.heightAnchor.constraint(equalToConstant: 30),
statusLabel.leadingAnchor.constraint(equalTo: view.leadingAnchor),
statusLabel.trailingAnchor.constraint(equalTo: view.trailingAnchor),
])
}
}
extension BasicMapViewController: GMSMapViewDelegate {
func mapViewDidStartTileRendering(_ mapView: GMSMapView) {
statusLabel.alpha = 0.8
statusLabel.text = "Rendering"
}
func mapViewDidFinishTileRendering(_ mapView: GMSMapView) {
statusLabel.alpha = 0.0
}
}
Objective-C
#import "GoogleMapsDemos/Samples/BasicMapViewController.h"
#import <GoogleMaps/GoogleMaps.h>
@implementation BasicMapViewController {
UILabel *_statusLabel;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Seattle coordinates
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:47.6089945
longitude:-122.3410462
zoom:14];
GMSMapView *view = [GMSMapView mapWithFrame:CGRectZero camera:camera];
view.delegate = self;
self.view = view;
// Add status label, initially hidden.
_statusLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 0, 30)];
_statusLabel.alpha = 0.0f;
_statusLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth;
_statusLabel.backgroundColor = [UIColor blueColor];
_statusLabel.textColor = [UIColor whiteColor];
_statusLabel.textAlignment = NSTextAlignmentCenter;
[view addSubview:_statusLabel];
}
- (void)mapViewDidStartTileRendering:(GMSMapView *)mapView {
_statusLabel.alpha = 0.8f;
_statusLabel.text = @"Rendering";
}
- (void)mapViewDidFinishTileRendering:(GMSMapView *)mapView {
_statusLabel.alpha = 0.0f;
}
@end
Esegui l'app di esempio completa in locale
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 install
open GoogleMapsSwiftDemos.xcworkspace
Objective-C
cd maps-sdk-for-ios-samples-main/GoogleMaps
pod install
open GoogleMapsDemos.xcworkspace
- In Xcode, premi il pulsante di compilazione per compilare l'app con lo schema corrente. La compilazione genera un errore che ti chiede di inserire la chiave API nel file
SDKConstants.swift
per Swift o nel file SDKDemoAPIKey.h
per Objective-C.
- Genera una chiave API dal tuo progetto con Maps SDK for iOS abilitato.
- 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
static NSString *const kAPIKey = @"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.
Salvo quando diversamente specificato, i contenuti di questa pagina sono concessi in base alla licenza Creative Commons Attribution 4.0, mentre gli esempi di codice sono concessi in base alla licenza Apache 2.0. Per ulteriori dettagli, consulta le norme del sito di Google Developers. Java è un marchio registrato di Oracle e/o delle sue consociate.
Ultimo aggiornamento 2025-08-31 UTC.
[null,null,["Ultimo aggiornamento 2025-08-31 UTC."],[[["\u003cp\u003eThis guide demonstrates how to create a basic map centered on Seattle using the Google Maps SDK for iOS.\u003c/p\u003e\n"],["\u003cp\u003eIt provides code samples in both Swift and Objective-C to display the map.\u003c/p\u003e\n"],["\u003cp\u003eBefore running the code, you need to configure your development environment and obtain a Google Maps API key.\u003c/p\u003e\n"],["\u003cp\u003eThe guide includes steps to download, install, and run the full sample app, enabling exploration of various Maps SDK features.\u003c/p\u003e\n"]]],[],null,["This example creates a map that's centered on Seattle, Washington.\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 BasicMapViewController: UIViewController {\n var statusLabel: UILabel!\n\n override func viewDidLoad() {\n super.viewDidLoad()\n\n // Seattle coordinates\n let camera = GMSCameraPosition(latitude: 47.6089945, longitude: -122.3410462, zoom: 14)\n let mapView = GMSMapView(frame: view.bounds, camera: camera)\n mapView.delegate = self\n view = mapView\n navigationController?.navigationBar.isTranslucent = false\n\n statusLabel = UILabel(frame: .zero)\n statusLabel.alpha = 0.0\n statusLabel.backgroundColor = .blue\n statusLabel.textColor = .white\n statusLabel.textAlignment = .center\n view.addSubview(statusLabel)\n statusLabel.translatesAutoresizingMaskIntoConstraints = false\n NSLayoutConstraint.activate([\n statusLabel.topAnchor.constraint(equalTo: view.topAnchor),\n statusLabel.heightAnchor.constraint(equalToConstant: 30),\n statusLabel.leadingAnchor.constraint(equalTo: view.leadingAnchor),\n statusLabel.trailingAnchor.constraint(equalTo: view.trailingAnchor),\n ])\n }\n}\n\nextension BasicMapViewController: GMSMapViewDelegate {\n func mapViewDidStartTileRendering(_ mapView: GMSMapView) {\n statusLabel.alpha = 0.8\n statusLabel.text = \"Rendering\"\n }\n\n func mapViewDidFinishTileRendering(_ mapView: GMSMapView) {\n statusLabel.alpha = 0.0\n }\n}https://github.com/googlemaps-samples/maps-sdk-for-ios-samples/blob/86408feffd008565cd2cafce8aff3dc27f1f41bb/GoogleMaps-Swift/GoogleMapsSwiftDemos/Swift/Samples/BasicMapViewController.swift#L14-L55\n \n```\n\nObjective-C \n\n```objective-c\n#import \"GoogleMapsDemos/Samples/BasicMapViewController.h\"\n\n#import \u003cGoogleMaps/GoogleMaps.h\u003e\n\n@implementation BasicMapViewController {\n UILabel *_statusLabel;\n}\n\n- (void)viewDidLoad {\n [super viewDidLoad];\n // Seattle coordinates\n GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:47.6089945\n longitude:-122.3410462\n zoom:14];\n GMSMapView *view = [GMSMapView mapWithFrame:CGRectZero camera:camera];\n view.delegate = self;\n self.view = view;\n\n // Add status label, initially hidden.\n _statusLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 0, 30)];\n _statusLabel.alpha = 0.0f;\n _statusLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth;\n _statusLabel.backgroundColor = [UIColor blueColor];\n _statusLabel.textColor = [UIColor whiteColor];\n _statusLabel.textAlignment = NSTextAlignmentCenter;\n\n [view addSubview:_statusLabel];\n}\n\n- (void)mapViewDidStartTileRendering:(GMSMapView *)mapView {\n _statusLabel.alpha = 0.8f;\n _statusLabel.text = @\"Rendering\";\n}\n\n- (void)mapViewDidFinishTileRendering:(GMSMapView *)mapView {\n _statusLabel.alpha = 0.0f;\n}\n\n@end \nhttps://github.com/googlemaps-samples/maps-sdk-for-ios-samples/blob/86408feffd008565cd2cafce8aff3dc27f1f41bb/GoogleMaps/GoogleMapsDemos/Samples/BasicMapViewController.m#L16-L54\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**."]]