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This example draws polygons around the geographical boundaries of the US states of New York and North Carolina. The polygon covering New York is drawn with a triangular hole in the center.
Get startedBefore you can try the sample code, you must configure your development environment. For more information, see Maps SDK for iOS code samples.
View the code Swiftimport 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
Run the full sample app locally
The Maps SDK for iOS sample app is available as a download archive from GitHub. Follow these steps to install and try the Maps SDK for iOS sample app.
git clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.git to clone the samples repository into a local directory.Open a terminal window, navigate to the directory where you cloned the sample files, and drill down into the GoogleMaps directory:
Swiftcd maps-sdk-for-ios-samples-main/GoogleMaps-SwiftObjective-Cpod installopen GoogleMapsSwiftDemos.xcworkspace
cd maps-sdk-for-ios-samples-main/GoogleMapspod installopen GoogleMapsDemos.xcworkspace
SDKConstants.swift file for Swift orSDKDemoAPIKey.h file for Objective-C.SDKConstants.swift file for Swift orSDKDemoAPIKey.h file for Objective-C and paste your API key into the definition of either the apiKey or kAPIKey constant. For example: Swift
static let apiKey = "YOUR_API_KEY"Objective-C
static NSString *const kAPIKey = @"YOUR_API_KEY";
SDKConstants.swift file (Swift) orSDKDemoAPIKey.h file (Objective-C), remove the following line, because it's used to register the user-defined issue: Swift
#error (Register for API Key and insert here. Then delete this line.)Objective-C
#error Register for API Key and insert here.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-07-23 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-23 UTC."],[[["This code sample demonstrates how to draw polygons on a map using the Google Maps SDK for iOS."],["It specifically showcases drawing polygons representing the geographical boundaries of New York and North Carolina."],["The New York polygon includes a triangular hole in its center, illustrating the use of polygon holes."],["The sample code provides examples in both Swift and Objective-C, allowing developers to choose their preferred language."],["Tapping on a polygon changes its fill color, adding interactivity to the map."]]],["The code draws two polygons representing the US states of New York and North Carolina on a map. The New York polygon has a triangular hole in its center. The code sets the fill color, stroke color, and stroke width for both polygons and makes them tappable. When a polygon is tapped, its fill color changes randomly. The sample app requires setting up a development environment and entering an API key.\n"]]
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