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Anda harus mengonfigurasi lingkungan pengembangan Anda sebelum dapat mencoba kode contoh. Untuk informasi selengkapnya, lihat contoh kode Maps SDK for iOS.

Melihat kode

import GoogleMaps
import UIKit

class MyLocationViewController: UIViewController {

  private let cameraLatitude: CLLocationDegrees = -33.868

  private let cameraLongitude: CLLocationDegrees = 151.2086

  private let cameraZoom: Float = 12

  lazy var mapView: GMSMapView = {
    let camera = GMSCameraPosition(
      latitude: cameraLatitude, longitude: cameraLongitude, zoom: cameraZoom)
    return GMSMapView(frame: .zero, camera: camera)
  }()

  var observation: NSKeyValueObservation?
  var location: CLLocation? {
    didSet {
      guard oldValue == nil, let firstLocation = location else { return }
      mapView.camera = GMSCameraPosition(target: firstLocation.coordinate, zoom: 14)
    }
  }

  override func viewDidLoad() {
    super.viewDidLoad()

    mapView.delegate = self
    mapView.settings.compassButton = true
    mapView.settings.myLocationButton = true
    mapView.isMyLocationEnabled = true
    view = mapView

    // Listen to the myLocation property of GMSMapView.
    observation = mapView.observe(\.myLocation, options: [.new]) {
      [weak self] mapView, _ in
      self?.location = mapView.myLocation
    }
  }

  deinit {
    observation?.invalidate()
  }
}

extension MyLocationViewController: GMSMapViewDelegate {
  func mapView(_ mapView: GMSMapView, didTapMyLocation location: CLLocationCoordinate2D) {
    let alert = UIAlertController(
      title: "Location Tapped",
      message: "Current location: <\(location.latitude), \(location.longitude)>",
      preferredStyle: .alert)
    alert.addAction(UIAlertAction(title: "OK", style: .default))
    present(alert, animated: true)
  }
}
MyLocationViewController.swift
      

#import "GoogleMapsDemos/Samples/MyLocationViewController.h"

#import <GoogleMaps/GoogleMaps.h>

@implementation MyLocationViewController {
  GMSMapView *_mapView;
  BOOL _firstLocationUpdate;
}

- (void)viewDidLoad {
  [super viewDidLoad];
  GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-33.868
                                                          longitude:151.2086
                                                               zoom:12];

  _mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
  _mapView.delegate = self;
  _mapView.settings.compassButton = YES;
  _mapView.settings.myLocationButton = YES;

  // Listen to the myLocation property of GMSMapView.
  [_mapView addObserver:self
             forKeyPath:@"myLocation"
                options:NSKeyValueObservingOptionNew
                context: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 *)mapView didTapMyLocation:(CLLocationCoordinate2D)location {
  NSString *message = [NSString stringWithFormat:@"My Location Dot Tapped at: [lat: %f, lng: %f]",
                                                 location.latitude, location.longitude];
  UIAlertController *alertController =
      [UIAlertController alertControllerWithTitle:@"Location Tapped"
                                          message:message
                                   preferredStyle:UIAlertControllerStyleAlert];
  UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"OK"
                                                     style:UIAlertActionStyleDefault
                                                   handler:^(UIAlertAction *action){
                                                   }];
  [alertController addAction:okAction];
  [self presentViewController:alertController animated:YES completion:nil];
}

- (void)dealloc {
  [_mapView removeObserver:self forKeyPath:@"myLocation" context:NULL];
}

#pragma mark - KVO updates

- (void)observeValueForKeyPath:(NSString *)keyPath
                      ofObject:(id)object
                        change:(NSDictionary *)change
                       context:(void *)context {
  if (!_firstLocationUpdate) {
    // If the first location update has not yet been received, then jump to that location.
    _firstLocationUpdate = YES;
    CLLocation *location = [change objectForKey:NSKeyValueChangeNewKey];
    _mapView.camera = [GMSCameraPosition cameraWithTarget:location.coordinate zoom:14];
  }
}

@end
MyLocationViewController.m
      

Menjalankan aplikasi contoh lengkap secara lokal

Aplikasi contoh Maps SDK for iOS tersedia sebagai arsip download dari GitHub. Ikuti langkah-langkah berikut untuk menginstal dan mencoba aplikasi contoh Maps SDK for iOS.

1. Jalankan git clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.git untuk meng-clone repositori contoh ke direktori lokal.

2. Buka jendela terminal, buka direktori tempat Anda meng-clone file contoh, lalu buka direktori 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

3. Di Xcode, tekan tombol compile untuk mem-build aplikasi dengan skema saat ini. Build akan menghasilkan error, yang meminta Anda memasukkan kunci API dalam file SDKConstants.swift untuk Swift atau file SDKDemoAPIKey.h untuk Objective-C.
4. Jika Anda belum memiliki kunci API, ikuti petunjuk untuk menyiapkan project di Konsol Google Cloud dan mendapatkan kunci API. Saat mengonfigurasi kunci di Cloud Console, Anda dapat membatasi kunci ke ID paket aplikasi contoh untuk memastikan hanya aplikasi Anda yang dapat menggunakan kunci tersebut. ID paket default aplikasi contoh SDK adalah com.example.GoogleMapsDemos.
5. Edit file SDKConstants.swift untuk Swift atau file SDKDemoAPIKey.h untuk Objective-C, lalu tempelkan kunci API Anda ke dalam definisi konstanta apiKey atau kAPIKey. Contoh:

   Swift

   static let apiKey = "YOUR_API_KEY"

   Objective-C

   static NSString *const kAPIKey = @"YOUR_API_KEY";

6. Dalam file SDKConstants.swift (Swift) atau file SDKDemoAPIKey.h (Objective-C), hapus baris berikut, karena baris ini digunakan untuk mendaftarkan masalah yang ditentukan pengguna:

   Swift

   #error (Register for API Key and insert here. Then delete this line.)

   Objective-C

   #error Register for API Key and insert here.

7. Bangun dan jalankan proyek. Jendela simulator iOS muncul, menampilkan daftar Maps SDK Demos.
8. Pilih salah satu opsi yang ditampilkan, untuk bereksperimen dengan fitur Maps SDK for iOS.
9. Jika diminta untuk mengizinkan GoogleMapsDemos mengakses lokasi Anda, pilih Izinkan.