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Swift
import GoogleMaps
import UIKit
final class PolygonsViewController: UIViewController {
private lazy var mapView: GMSMapView = {
let cameraPosition = GMSCameraPosition(latitude: 39.13006, longitude: -77.508545, zoom: 4)
return GMSMapView(frame: .zero, camera: cameraPosition)
}()
override func loadView() {
mapView.delegate = self
view = mapView
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
// Create renderer related objects after view appears, so a renderer will be available;
let polygon = GMSPolygon()
polygon.path = GMSPath.newYorkState()
polygon.holes = [GMSPath.newYorkStateHole()]
polygon.title = "New York"
polygon.fillColor = UIColor(red: 0.25, green: 0, blue: 0, alpha: 0.2)
polygon.strokeColor = .black
polygon.strokeWidth = 2
polygon.isTappable = true
polygon.map = mapView
// Copy the existing polygon and its settings and use it as a base for the
// second polygon.
let carolina = polygon.copy() as! GMSPolygon
carolina.title = "North Carolina"
carolina.path = GMSPath.northCarolina()
carolina.fillColor = UIColor(red: 0, green: 0.25, blue: 0, alpha: 0.5)
carolina.map = mapView
}
}
extension GMSPath {
static func newYorkState() -> GMSPath {
let data: [[CLLocationDegrees]] = [
[42.5142, -79.7624],
[42.7783, -79.0672],
[42.8508, -78.9313],
[42.9061, -78.9024],
[42.9554, -78.9313],
[42.9584, -78.9656],
[42.9886, -79.0219],
[43.0568, -79.0027],
[43.0769, -79.0727],
[43.1220, -79.0713],
[43.1441, -79.0302],
[43.1801, -79.0576],
[43.2482, -79.0604],
[43.2812, -79.0837],
[43.4509, -79.2004],
[43.6311, -78.6909],
[43.6321, -76.7958],
[43.9987, -76.4978],
[44.0965, -76.4388],
[44.1349, -76.3536],
[44.1989, -76.3124],
[44.2049, -76.2437],
[44.2413, -76.1655],
[44.2973, -76.1353],
[44.3327, -76.0474],
[44.3553, -75.9856],
[44.3749, -75.9196],
[44.3994, -75.8730],
[44.4308, -75.8221],
[44.4740, -75.8098],
[44.5425, -75.7288],
[44.6647, -75.5585],
[44.7672, -75.4088],
[44.8101, -75.3442],
[44.8383, -75.3058],
[44.8676, -75.2399],
[44.9211, -75.1204],
[44.9609, -74.9995],
[44.9803, -74.9899],
[44.9852, -74.9103],
[45.0017, -74.8856],
[45.0153, -74.8306],
[45.0046, -74.7633],
[45.0027, -74.7070],
[45.0007, -74.5642],
[44.9920, -74.1467],
[45.0037, -73.7306],
[45.0085, -73.4203],
[45.0109, -73.3430],
[44.9874, -73.3547],
[44.9648, -73.3379],
[44.9160, -73.3396],
[44.8354, -73.3739],
[44.8013, -73.3324],
[44.7419, -73.3667],
[44.6139, -73.3873],
[44.5787, -73.3736],
[44.4916, -73.3049],
[44.4289, -73.2953],
[44.3513, -73.3365],
[44.2757, -73.3118],
[44.1980, -73.3818],
[44.1142, -73.4079],
[44.0511, -73.4367],
[44.0165, -73.4065],
[43.9375, -73.4079],
[43.8771, -73.3749],
[43.8167, -73.3914],
[43.7790, -73.3557],
[43.6460, -73.4244],
[43.5893, -73.4340],
[43.5655, -73.3969],
[43.6112, -73.3818],
[43.6271, -73.3049],
[43.5764, -73.3063],
[43.5675, -73.2582],
[43.5227, -73.2445],
[43.2582, -73.2582],
[42.9715, -73.2733],
[42.8004, -73.2898],
[42.7460, -73.2664],
[42.4630, -73.3708],
[42.0840, -73.5095],
[42.0218, -73.4903],
[41.8808, -73.4999],
[41.2953, -73.5535],
[41.2128, -73.4834],
[41.1011, -73.7275],
[41.0237, -73.6644],
[40.9851, -73.6578],
[40.9509, -73.6132],
[41.1869, -72.4823],
[41.2551, -72.0950],
[41.3005, -71.9714],
[41.3108, -71.9193],
[41.1838, -71.7915],
[41.1249, -71.7929],
[41.0462, -71.7517],
[40.6306, -72.9465],
[40.5368, -73.4628],
[40.4887, -73.8885],
[40.5232, -73.9490],
[40.4772, -74.2271],
[40.4861, -74.2532],
[40.6468, -74.1866],
[40.6556, -74.0547],
[40.7618, -74.0156],
[40.8699, -73.9421],
[40.9980, -73.8934],
[41.0343, -73.9854],
[41.3268, -74.6274],
[41.3583, -74.7084],
[41.3811, -74.7101],
[41.4386, -74.8265],
[41.5075, -74.9913],
[41.6000, -75.0668],
[41.6719, -75.0366],
[41.7672, -75.0545],
[41.8808, -75.1945],
[42.0013, -75.3552],
[42.0003, -75.4266],
[42.0013, -77.0306],
[41.9993, -79.7250],
[42.0003, -79.7621],
[42.1827, -79.7621],
[42.5146, -79.7621],
]
let path = GMSMutablePath()
for degrees in data {
path.addLatitude(degrees[0], longitude: degrees[1])
}
return path
}
static func newYorkStateHole() -> GMSPath {
let path = GMSMutablePath()
path.addLatitude(43.5000, longitude: -76.3651)
path.addLatitude(43.5000, longitude: -74.3651)
path.addLatitude(42.0000, longitude: -74.3651)
return path
}
static func northCarolina() -> GMSPath {
let path = GMSMutablePath()
let data = [
[33.7963, -78.4850],
[34.8037, -79.6742],
[34.8206, -80.8003],
[34.9377, -80.7880],
[35.1019, -80.9377],
[35.0356, -81.0379],
[35.1457, -81.0324],
[35.1660, -81.3867],
[35.1985, -82.2739],
[35.2041, -82.3933],
[35.0637, -82.7765],
[35.0817, -82.7861],
[34.9996, -83.1075],
[34.9918, -83.6183],
[34.9918, -84.3201],
[35.2131, -84.2885],
[35.2680, -84.2226],
[35.2310, -84.1113],
[35.2815, -84.0454],
[35.4058, -84.0248],
[35.4719, -83.9424],
[35.5166, -83.8559],
[35.5512, -83.6938],
[35.5680, -83.5181],
[35.6327, -83.3849],
[35.7142, -83.2475],
[35.7799, -82.9962],
[35.8445, -82.9276],
[35.9224, -82.8191],
[35.9958, -82.7710],
[36.0613, -82.6419],
[35.9702, -82.6103],
[35.9547, -82.5677],
[36.0236, -82.4730],
[36.0669, -82.4194],
[36.1168, -82.3535],
[36.1345, -82.2862],
[36.1467, -82.1461],
[36.1035, -82.1228],
[36.1268, -82.0267],
[36.2797, -81.9360],
[36.3527, -81.7987],
[36.3361, -81.7081],
[36.5880, -81.6724],
[36.5659, -80.7234],
[36.5438, -80.2977],
[36.5449, -79.6729],
[36.5449, -77.2559],
[36.5505, -75.7562],
[36.3129, -75.7068],
[35.7131, -75.4129],
[35.2041, -75.4720],
[34.9794, -76.0748],
[34.5258, -76.4951],
[34.5880, -76.8109],
[34.5314, -77.1378],
[34.3910, -77.4481],
[34.0481, -77.7983],
[33.7666, -77.9260],
[33.7963, -78.4863],
]
for degrees in data {
path.addLatitude(degrees[0], longitude: degrees[1])
}
return path
}
}
extension PolygonsViewController: GMSMapViewDelegate {
func mapView(_ mapView: GMSMapView, didTap overlay: GMSOverlay) {
// When a polygon is tapped, randomly change its fill color to a new hue.
guard let polygon = overlay as? GMSPolygon else { return }
polygon.fillColor = UIColor(
hue: CGFloat.random(in: 0..<1), saturation: 1, brightness: 1, alpha: 0.5)
}
}
Objective-C
#import "GoogleMapsDemos/Samples/PolygonsViewController.h"
#import <GoogleMaps/GoogleMaps.h>
@interface PolygonsViewController ()
@property(nonatomic) GMSPolygon *polygonOfNewYork;
@property(nonatomic) GMSPolygon *polygonOfNorthCarolina;
@end
@implementation PolygonsViewController
- (void)viewDidLoad {
[super viewDidLoad];
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:39.13006
longitude:-77.508545
zoom:4];
GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
mapView.delegate = self; // needed for didTapOverlay delegate method
self.view = mapView;
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
// Create renderer related objects after view appears, so a renderer will be available; otherwise,
// behavior is undefined (may result in null ptr derefs).
GMSMapView *mapView = (GMSMapView *)self.view;
// Create the first polygon.
GMSPolygon *polygon = [[GMSPolygon alloc] init];
polygon.path = [self pathOfNewYorkState];
polygon.holes = @[ [self pathOfNewYorkStateHole] ];
polygon.title = @"New York";
polygon.fillColor = [UIColor colorWithRed:0.25 green:0 blue:0 alpha:0.2f];
polygon.strokeColor = [UIColor blackColor];
polygon.strokeWidth = 2;
polygon.tappable = YES;
polygon.map = mapView;
self.polygonOfNewYork = polygon;
// Copy the existing polygon and its settings and use it as a base for the second polygon.
polygon = [polygon copy];
polygon.title = @"North Carolina";
polygon.path = [self pathOfNorthCarolina];
polygon.fillColor = [UIColor colorWithRed:0 green:0.25 blue:0 alpha:0.5];
polygon.map = mapView;
self.polygonOfNorthCarolina = polygon;
}
- (void)mapView:(GMSMapView *)mapView didTapOverlay:(GMSOverlay *)overlay {
// When a polygon is tapped, randomly change its fill color to a new hue.
if ([overlay isKindOfClass:[GMSPolygon class]]) {
GMSPolygon *polygon = (GMSPolygon *)overlay;
CGFloat hue = (((float)arc4random() / 0x100000000) * 1.0f);
polygon.fillColor = [UIColor colorWithHue:hue saturation:1 brightness:1 alpha:0.5];
}
}
- (GMSPath *)pathOfNewYorkState {
GMSMutablePath *path = [GMSMutablePath path];
[path addLatitude:42.5142 longitude:-79.7624];
[path addLatitude:42.7783 longitude:-79.0672];
[path addLatitude:42.8508 longitude:-78.9313];
[path addLatitude:42.9061 longitude:-78.9024];
[path addLatitude:42.9554 longitude:-78.9313];
[path addLatitude:42.9584 longitude:-78.9656];
[path addLatitude:42.9886 longitude:-79.0219];
[path addLatitude:43.0568 longitude:-79.0027];
[path addLatitude:43.0769 longitude:-79.0727];
[path addLatitude:43.1220 longitude:-79.0713];
[path addLatitude:43.1441 longitude:-79.0302];
[path addLatitude:43.1801 longitude:-79.0576];
[path addLatitude:43.2482 longitude:-79.0604];
[path addLatitude:43.2812 longitude:-79.0837];
[path addLatitude:43.4509 longitude:-79.2004];
[path addLatitude:43.6311 longitude:-78.6909];
[path addLatitude:43.6321 longitude:-76.7958];
[path addLatitude:43.9987 longitude:-76.4978];
[path addLatitude:44.0965 longitude:-76.4388];
[path addLatitude:44.1349 longitude:-76.3536];
[path addLatitude:44.1989 longitude:-76.3124];
[path addLatitude:44.2049 longitude:-76.2437];
[path addLatitude:44.2413 longitude:-76.1655];
[path addLatitude:44.2973 longitude:-76.1353];
[path addLatitude:44.3327 longitude:-76.0474];
[path addLatitude:44.3553 longitude:-75.9856];
[path addLatitude:44.3749 longitude:-75.9196];
[path addLatitude:44.3994 longitude:-75.8730];
[path addLatitude:44.4308 longitude:-75.8221];
[path addLatitude:44.4740 longitude:-75.8098];
[path addLatitude:44.5425 longitude:-75.7288];
[path addLatitude:44.6647 longitude:-75.5585];
[path addLatitude:44.7672 longitude:-75.4088];
[path addLatitude:44.8101 longitude:-75.3442];
[path addLatitude:44.8383 longitude:-75.3058];
[path addLatitude:44.8676 longitude:-75.2399];
[path addLatitude:44.9211 longitude:-75.1204];
[path addLatitude:44.9609 longitude:-74.9995];
[path addLatitude:44.9803 longitude:-74.9899];
[path addLatitude:44.9852 longitude:-74.9103];
[path addLatitude:45.0017 longitude:-74.8856];
[path addLatitude:45.0153 longitude:-74.8306];
[path addLatitude:45.0046 longitude:-74.7633];
[path addLatitude:45.0027 longitude:-74.7070];
[path addLatitude:45.0007 longitude:-74.5642];
[path addLatitude:44.9920 longitude:-74.1467];
[path addLatitude:45.0037 longitude:-73.7306];
[path addLatitude:45.0085 longitude:-73.4203];
[path addLatitude:45.0109 longitude:-73.3430];
[path addLatitude:44.9874 longitude:-73.3547];
[path addLatitude:44.9648 longitude:-73.3379];
[path addLatitude:44.9160 longitude:-73.3396];
[path addLatitude:44.8354 longitude:-73.3739];
[path addLatitude:44.8013 longitude:-73.3324];
[path addLatitude:44.7419 longitude:-73.3667];
[path addLatitude:44.6139 longitude:-73.3873];
[path addLatitude:44.5787 longitude:-73.3736];
[path addLatitude:44.4916 longitude:-73.3049];
[path addLatitude:44.4289 longitude:-73.2953];
[path addLatitude:44.3513 longitude:-73.3365];
[path addLatitude:44.2757 longitude:-73.3118];
[path addLatitude:44.1980 longitude:-73.3818];
[path addLatitude:44.1142 longitude:-73.4079];
[path addLatitude:44.0511 longitude:-73.4367];
[path addLatitude:44.0165 longitude:-73.4065];
[path addLatitude:43.9375 longitude:-73.4079];
[path addLatitude:43.8771 longitude:-73.3749];
[path addLatitude:43.8167 longitude:-73.3914];
[path addLatitude:43.7790 longitude:-73.3557];
[path addLatitude:43.6460 longitude:-73.4244];
[path addLatitude:43.5893 longitude:-73.4340];
[path addLatitude:43.5655 longitude:-73.3969];
[path addLatitude:43.6112 longitude:-73.3818];
[path addLatitude:43.6271 longitude:-73.3049];
[path addLatitude:43.5764 longitude:-73.3063];
[path addLatitude:43.5675 longitude:-73.2582];
[path addLatitude:43.5227 longitude:-73.2445];
[path addLatitude:43.2582 longitude:-73.2582];
[path addLatitude:42.9715 longitude:-73.2733];
[path addLatitude:42.8004 longitude:-73.2898];
[path addLatitude:42.7460 longitude:-73.2664];
[path addLatitude:42.4630 longitude:-73.3708];
[path addLatitude:42.0840 longitude:-73.5095];
[path addLatitude:42.0218 longitude:-73.4903];
[path addLatitude:41.8808 longitude:-73.4999];
[path addLatitude:41.2953 longitude:-73.5535];
[path addLatitude:41.2128 longitude:-73.4834];
[path addLatitude:41.1011 longitude:-73.7275];
[path addLatitude:41.0237 longitude:-73.6644];
[path addLatitude:40.9851 longitude:-73.6578];
[path addLatitude:40.9509 longitude:-73.6132];
[path addLatitude:41.1869 longitude:-72.4823];
[path addLatitude:41.2551 longitude:-72.0950];
[path addLatitude:41.3005 longitude:-71.9714];
[path addLatitude:41.3108 longitude:-71.9193];
[path addLatitude:41.1838 longitude:-71.7915];
[path addLatitude:41.1249 longitude:-71.7929];
[path addLatitude:41.0462 longitude:-71.7517];
[path addLatitude:40.6306 longitude:-72.9465];
[path addLatitude:40.5368 longitude:-73.4628];
[path addLatitude:40.4887 longitude:-73.8885];
[path addLatitude:40.5232 longitude:-73.9490];
[path addLatitude:40.4772 longitude:-74.2271];
[path addLatitude:40.4861 longitude:-74.2532];
[path addLatitude:40.6468 longitude:-74.1866];
[path addLatitude:40.6556 longitude:-74.0547];
[path addLatitude:40.7618 longitude:-74.0156];
[path addLatitude:40.8699 longitude:-73.9421];
[path addLatitude:40.9980 longitude:-73.8934];
[path addLatitude:41.0343 longitude:-73.9854];
[path addLatitude:41.3268 longitude:-74.6274];
[path addLatitude:41.3583 longitude:-74.7084];
[path addLatitude:41.3811 longitude:-74.7101];
[path addLatitude:41.4386 longitude:-74.8265];
[path addLatitude:41.5075 longitude:-74.9913];
[path addLatitude:41.6000 longitude:-75.0668];
[path addLatitude:41.6719 longitude:-75.0366];
[path addLatitude:41.7672 longitude:-75.0545];
[path addLatitude:41.8808 longitude:-75.1945];
[path addLatitude:42.0013 longitude:-75.3552];
[path addLatitude:42.0003 longitude:-75.4266];
[path addLatitude:42.0013 longitude:-77.0306];
[path addLatitude:41.9993 longitude:-79.7250];
[path addLatitude:42.0003 longitude:-79.7621];
[path addLatitude:42.1827 longitude:-79.7621];
[path addLatitude:42.5146 longitude:-79.7621];
return path;
}
- (GMSPath *)pathOfNewYorkStateHole {
GMSMutablePath *path = [GMSMutablePath path];
[path addLatitude:43.5000 longitude:-76.3651];
[path addLatitude:43.5000 longitude:-74.3651];
[path addLatitude:42.0000 longitude:-74.3651];
return path;
}
- (GMSPath *)pathOfNorthCarolina {
GMSMutablePath *path = [GMSMutablePath path];
[path addLatitude:33.7963 longitude:-78.4850];
[path addLatitude:34.8037 longitude:-79.6742];
[path addLatitude:34.8206 longitude:-80.8003];
[path addLatitude:34.9377 longitude:-80.7880];
[path addLatitude:35.1019 longitude:-80.9377];
[path addLatitude:35.0356 longitude:-81.0379];
[path addLatitude:35.1457 longitude:-81.0324];
[path addLatitude:35.1660 longitude:-81.3867];
[path addLatitude:35.1985 longitude:-82.2739];
[path addLatitude:35.2041 longitude:-82.3933];
[path addLatitude:35.0637 longitude:-82.7765];
[path addLatitude:35.0817 longitude:-82.7861];
[path addLatitude:34.9996 longitude:-83.1075];
[path addLatitude:34.9918 longitude:-83.6183];
[path addLatitude:34.9918 longitude:-84.3201];
[path addLatitude:35.2131 longitude:-84.2885];
[path addLatitude:35.2680 longitude:-84.2226];
[path addLatitude:35.2310 longitude:-84.1113];
[path addLatitude:35.2815 longitude:-84.0454];
[path addLatitude:35.4058 longitude:-84.0248];
[path addLatitude:35.4719 longitude:-83.9424];
[path addLatitude:35.5166 longitude:-83.8559];
[path addLatitude:35.5512 longitude:-83.6938];
[path addLatitude:35.5680 longitude:-83.5181];
[path addLatitude:35.6327 longitude:-83.3849];
[path addLatitude:35.7142 longitude:-83.2475];
[path addLatitude:35.7799 longitude:-82.9962];
[path addLatitude:35.8445 longitude:-82.9276];
[path addLatitude:35.9224 longitude:-82.8191];
[path addLatitude:35.9958 longitude:-82.7710];
[path addLatitude:36.0613 longitude:-82.6419];
[path addLatitude:35.9702 longitude:-82.6103];
[path addLatitude:35.9547 longitude:-82.5677];
[path addLatitude:36.0236 longitude:-82.4730];
[path addLatitude:36.0669 longitude:-82.4194];
[path addLatitude:36.1168 longitude:-82.3535];
[path addLatitude:36.1345 longitude:-82.2862];
[path addLatitude:36.1467 longitude:-82.1461];
[path addLatitude:36.1035 longitude:-82.1228];
[path addLatitude:36.1268 longitude:-82.0267];
[path addLatitude:36.2797 longitude:-81.9360];
[path addLatitude:36.3527 longitude:-81.7987];
[path addLatitude:36.3361 longitude:-81.7081];
[path addLatitude:36.5880 longitude:-81.6724];
[path addLatitude:36.5659 longitude:-80.7234];
[path addLatitude:36.5438 longitude:-80.2977];
[path addLatitude:36.5449 longitude:-79.6729];
[path addLatitude:36.5449 longitude:-77.2559];
[path addLatitude:36.5505 longitude:-75.7562];
[path addLatitude:36.3129 longitude:-75.7068];
[path addLatitude:35.7131 longitude:-75.4129];
[path addLatitude:35.2041 longitude:-75.4720];
[path addLatitude:34.9794 longitude:-76.0748];
[path addLatitude:34.5258 longitude:-76.4951];
[path addLatitude:34.5880 longitude:-76.8109];
[path addLatitude:34.5314 longitude:-77.1378];
[path addLatitude:34.3910 longitude:-77.4481];
[path addLatitude:34.0481 longitude:-77.7983];
[path addLatitude:33.7666 longitude:-77.9260];
[path addLatitude:33.7963 longitude:-78.4863];
return path;
}
@end
在本地运行完整示例应用
Maps SDK for iOS 示例应用以 GitHub 上的下载归档文件的形式提供。请按照以下步骤安装并试用 Maps SDK for iOS 示例应用。
- 运行
git clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.git以将示例代码库克隆到本地目录。 打开一个终端窗口，前往您克隆示例文件的目录，然后展开 GoogleMaps 目录：
Swift
cd maps-sdk-for-ios-samples-main/GoogleMaps-Swift
pod installopen GoogleMapsSwiftDemos.xcworkspaceObjective-C
cd maps-sdk-for-ios-samples-main/GoogleMaps
pod installopen GoogleMapsDemos.xcworkspace- 在 Xcode 中，按 compile 按钮使用当前架构构建应用。构建引发错误，提示您在 Swift 的
SDKConstants.swift文件或 Objective-C 的SDKDemoAPIKey.h文件中输入 API 密钥。 - 如果您尚未获得 API 密钥，请按照说明在 Google Cloud 控制台中设置项目并获取 API 密钥。在 Cloud 控制台中配置密钥时，您可以将密钥限制为示例应用的软件包标识符，以确保只有您的应用可以使用该密钥。SDK 示例应用的默认 bundle 标识符为
com.example.GoogleMapsDemos。 - 针对 Swift 编辑
SDKConstants.swift文件，针对 Objective-C 编辑SDKDemoAPIKey.h文件，然后将您的 API 密钥粘贴到apiKey或kAPIKey常量的定义中。例如：Swift
static let apiKey = "YOUR_API_KEY"Objective-C
static NSString *const kAPIKey = @"YOUR_API_KEY"; - 在
SDKConstants.swift文件 (Swift) 或SDKDemoAPIKey.h文件 (Objective-C) 中，移除以下行，因为该行用于注册用户定义的问题：Swift
#error (Register for API Key and insert here. Then delete this line.)
Objective-C
#error Register for API Key and insert here.
- 构建并运行项目。出现 iOS 模拟器窗口，显示 Maps SDK 演示应用列表。
- 从显示的选项中选择其一，对 Maps SDK for iOS 的其中一项功能进行试验。
- 如果系统提示您允许 GoogleMapsDemos 获取您的位置信息，请选择允许。