שרטטו קווים פוליגוניים במפה
קל לארגן דפים בעזרת אוספים
אפשר לשמור ולסווג תוכן על סמך ההעדפות שלך.
מפה של האוקיינוס השקט הדרומי עם אנימציה של קווים פוליגונליים אדומים וירוקים שמשתנים במיקום ובגודל.
שנתחיל?
לפני שתוכלו לנסות את הקוד לדוגמה, עליכם להגדיר את סביבת הפיתוח.
מידע נוסף זמין במאמר דוגמאות קוד ל-SDK של מפות ל-iOS.
הצגת הקוד
Swift
import GoogleMaps
import UIKit
final class PolylinesViewController: UIViewController {
private lazy var styles: [GMSStrokeStyle] = {
let greenStyle = GMSStrokeStyle.gradient(from: .green, to: UIColor.green.withAlphaComponent(0))
let redStyle = GMSStrokeStyle.gradient(from: UIColor.red.withAlphaComponent(0), to: .red)
return [greenStyle, redStyle, GMSStrokeStyle.solidColor(UIColor(white: 0, alpha: 0))]
}()
private var pathLength: Double = 0
private var pos: Double = 0
private var polylines: [GMSPolyline] = []
private lazy var mapView: GMSMapView = {
let camera = GMSCameraPosition(latitude: -30, longitude: -175, zoom: 3)
return GMSMapView(frame: .zero, camera: camera)
}()
override func loadView() {
view = mapView
mapView.accessibilityElementsHidden = true
}
override func viewDidLoad() {
super.viewDidLoad()
var path = GMSMutablePath()
path.addLatitude(-33.866901, longitude: 151.195988)
path.addLatitude(-18, longitude: 179)
path.addLatitude(21.291982, longitude: -157.821856)
path.addLatitude(37.423802, longitude: -122.091859)
path.addLatitude(-12, longitude: -77)
path.addLatitude(-33.866901, longitude: 151.195988)
path = path.pathOffset(byLatitude: -30, longitude: 0)
pathLength = path.length(of: .geodesic) / 21
for i in 0..<30 {
let polyline = GMSPolyline(path: path.pathOffset(byLatitude: Double(i) * 1.5, longitude: 0))
polyline.strokeWidth = 8
polyline.geodesic = true
polyline.map = mapView
polylines.append(polyline)
}
animatePath()
}
// Updates the path style every 0.1 seconds.
private func animatePath() {
polylines.forEach {
if let path = $0.path {
$0.spans = GMSStyleSpansOffset(path, styles, [NSNumber(value: pathLength)], .geodesic, pos)
}
}
pos -= 50000
DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.1) {
self.animatePath()
}
}
}
Objective-C
#import "GoogleMapsDemos/Samples/PolylinesViewController.h"
#import <GoogleMaps/GoogleMaps.h>
static CLLocationCoordinate2D kSydneyAustralia = {-33.866901, 151.195988};
static CLLocationCoordinate2D kHawaiiUSA = {21.291982, -157.821856};
static CLLocationCoordinate2D kFiji = {-18, 179};
static CLLocationCoordinate2D kMountainViewUSA = {37.423802, -122.091859};
static CLLocationCoordinate2D kLimaPeru = {-12, -77};
static bool kAnimate = true;
@implementation PolylinesViewController {
NSArray *_styles;
NSArray *_lengths;
NSArray *_polys;
double _pos, _step;
GMSMapView *_mapView;
}
- (void)tick {
for (GMSPolyline *poly in _polys) {
poly.spans = GMSStyleSpansOffset(poly.path, _styles, _lengths, kGMSLengthGeodesic, _pos);
}
_pos -= _step;
if (kAnimate) {
__weak id weakSelf = self;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, NSEC_PER_SEC / 10), dispatch_get_main_queue(),
^{
[weakSelf tick];
});
}
}
- (void)initLines {
if (!_polys) {
NSMutableArray *polys = [NSMutableArray array];
GMSMutablePath *path = [GMSMutablePath path];
[path addCoordinate:kSydneyAustralia];
[path addCoordinate:kFiji];
[path addCoordinate:kHawaiiUSA];
[path addCoordinate:kMountainViewUSA];
[path addCoordinate:kLimaPeru];
[path addCoordinate:kSydneyAustralia];
path = [path pathOffsetByLatitude:-30 longitude:0];
_lengths = @[ @([path lengthOfKind:kGMSLengthGeodesic] / 21) ];
for (int i = 0; i < 30; ++i) {
GMSPolyline *poly = [[GMSPolyline alloc] init];
poly.path = [path pathOffsetByLatitude:(i * 1.5) longitude:0];
poly.strokeWidth = 8;
poly.geodesic = YES;
poly.map = _mapView;
[polys addObject:poly];
}
_polys = polys;
}
}
- (void)viewDidLoad {
[super viewDidLoad];
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-30 longitude:-175 zoom:3];
GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
mapView.accessibilityElementsHidden = YES;
self.view = mapView;
_mapView = mapView;
CGFloat alpha = 1;
UIColor *green = [UIColor colorWithRed:0 green:1 blue:0 alpha:alpha];
UIColor *greenTransp = [UIColor colorWithRed:0 green:1 blue:0 alpha:0];
UIColor *red = [UIColor colorWithRed:1 green:0 blue:0 alpha:alpha];
UIColor *redTransp = [UIColor colorWithRed:1 green:0 blue:0 alpha:0];
GMSStrokeStyle *grad1 = [GMSStrokeStyle gradientFromColor:green toColor:greenTransp];
GMSStrokeStyle *grad2 = [GMSStrokeStyle gradientFromColor:redTransp toColor:red];
_styles = @[
grad1,
grad2,
[GMSStrokeStyle solidColor:[UIColor colorWithWhite:0 alpha:0]],
];
_step = 50000;
[self initLines];
[self tick];
}
@end
הפעלה מקומית של האפליקציה המלאה לדוגמה
האפליקציה לדוגמה של SDK של מפות ל-iOS זמינה כארכיון להורדה ב-GitHub.
כך מתקינים את האפליקציה לדוגמה של Maps SDK ל-iOS ומנסים אותה.
- מריצים את הפקודה
git clone https://github.com/googlemaps-samples/maps-sdk-for-ios-samples.git
כדי להעתיק את המאגר לדוגמה לספרייה מקומית.
פותחים חלון טרמינל, עוברים לספרייה שבה קלונתם את קובצי הדוגמה ומתעדים את ספריית Google Maps:
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
- ב-Xcode, לוחצים על לחצן הידור כדי ליצור את האפליקציה לפי התוכנית הנוכחית. תופיע הודעת שגיאה ב-build, ותתבקשו להזין את מפתח ה-API בקובץ
SDKConstants.swift
עבור Swift או בקובץ SDKDemoAPIKey.h
עבור Objective-C.
- מקבלים מפתח API מהפרויקט עם ה-SDK של מפות Google ל-iOS מופעל.
- עורכים את הקובץ
SDKConstants.swift
עבור Swift או את הקובץ SDKDemoAPIKey.h
עבור Objective-C ומדביקים את מפתח ה-API בהגדרה של הקבוע apiKey
או kAPIKey
. לדוגמה:
Swift
static let apiKey = "YOUR_API_KEY"
Objective-C
static NSString *const kAPIKey = @"YOUR_API_KEY";
- בקובץ
SDKConstants.swift
(Swift) או בקובץ SDKDemoAPIKey.h
(Objective-C), מסירים את השורה הבאה כי היא משמשת לרישום הבעיה שהוגדרה על ידי המשתמש:
Swift
#error (Register for API Key and insert here. Then delete this line.)
Objective-C
#error Register for API Key and insert here.
- פיתוח והרצה של הפרויקט. חלון הסימולטור של iOS מופיע עם רשימה של דמואים של SDK של מפות.
- בוחרים באחת מהאפשרויות שמוצגות כדי להתנסות בתכונה של SDK של מפות ל-iOS.
- אם מופיעה בקשה לתת ל-GoogleMapsDemos גישה למיקום שלכם, בוחרים באפשרות אישור.
אלא אם צוין אחרת, התוכן של דף זה הוא ברישיון Creative Commons Attribution 4.0 ודוגמאות הקוד הן ברישיון Apache 2.0. לפרטים, ניתן לעיין במדיניות האתר Google Developers. Java הוא סימן מסחרי רשום של חברת Oracle ו/או של השותפים העצמאיים שלה.
עדכון אחרון: 2025-08-31 (שעון UTC).
[null,null,["עדכון אחרון: 2025-08-31 (שעון UTC)."],[[["\u003cp\u003eThis sample demonstrates animating the style of a polyline on a map using the Google Maps SDK for iOS.\u003c/p\u003e\n"],["\u003cp\u003eThe animation is achieved by dynamically updating the \u003ccode\u003eGMSStyleSpansOffset\u003c/code\u003e of the polylines based on position and style.\u003c/p\u003e\n"],["\u003cp\u003eThe sample code provides implementations in both Swift and Objective-C.\u003c/p\u003e\n"],["\u003cp\u003eYou can clone the sample app repository, install dependencies via CocoaPods, build the project, and run it on an iOS simulator.\u003c/p\u003e\n"],["\u003cp\u003eEnsure to obtain and configure your API key before building and running the sample app.\u003c/p\u003e\n"]]],[],null,["Displays a map of the south Pacific Ocean with an animation of red and green polylines changing their position and size.\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\nfinal class PolylinesViewController: UIViewController {\n private lazy var styles: [GMSStrokeStyle] = {\n let greenStyle = GMSStrokeStyle.gradient(from: .green, to: UIColor.green.withAlphaComponent(0))\n let redStyle = GMSStrokeStyle.gradient(from: UIColor.red.withAlphaComponent(0), to: .red)\n return [greenStyle, redStyle, GMSStrokeStyle.solidColor(UIColor(white: 0, alpha: 0))]\n }()\n private var pathLength: Double = 0\n private var pos: Double = 0\n private var polylines: [GMSPolyline] = []\n\n private lazy var mapView: GMSMapView = {\n let camera = GMSCameraPosition(latitude: -30, longitude: -175, zoom: 3)\n return GMSMapView(frame: .zero, camera: camera)\n }()\n\n override func loadView() {\n view = mapView\n mapView.accessibilityElementsHidden = true\n }\n\n override func viewDidLoad() {\n super.viewDidLoad()\n\n var path = GMSMutablePath()\n path.addLatitude(-33.866901, longitude: 151.195988)\n path.addLatitude(-18, longitude: 179)\n path.addLatitude(21.291982, longitude: -157.821856)\n path.addLatitude(37.423802, longitude: -122.091859)\n path.addLatitude(-12, longitude: -77)\n path.addLatitude(-33.866901, longitude: 151.195988)\n path = path.pathOffset(byLatitude: -30, longitude: 0)\n pathLength = path.length(of: .geodesic) / 21\n for i in 0..\u003c30 {\n let polyline = GMSPolyline(path: path.pathOffset(byLatitude: Double(i) * 1.5, longitude: 0))\n polyline.strokeWidth = 8\n polyline.geodesic = true\n polyline.map = mapView\n polylines.append(polyline)\n }\n animatePath()\n }\n\n // Updates the path style every 0.1 seconds.\n private func animatePath() {\n polylines.forEach {\n if let path = $0.path {\n $0.spans = GMSStyleSpansOffset(path, styles, [NSNumber(value: pathLength)], .geodesic, pos)\n }\n }\n pos -= 50000\n\n DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.1) {\n self.animatePath()\n }\n }\n}https://github.com/googlemaps-samples/maps-sdk-for-ios-samples/blob/86408feffd008565cd2cafce8aff3dc27f1f41bb/GoogleMaps-Swift/GoogleMapsSwiftDemos/Swift/Samples/PolylinesViewController.swift#L14-L72\n \n```\n\nObjective-C \n\n```objective-c\n#import \"GoogleMapsDemos/Samples/PolylinesViewController.h\"\n\n#import \u003cGoogleMaps/GoogleMaps.h\u003e\n\nstatic CLLocationCoordinate2D kSydneyAustralia = {-33.866901, 151.195988};\nstatic CLLocationCoordinate2D kHawaiiUSA = {21.291982, -157.821856};\nstatic CLLocationCoordinate2D kFiji = {-18, 179};\nstatic CLLocationCoordinate2D kMountainViewUSA = {37.423802, -122.091859};\nstatic CLLocationCoordinate2D kLimaPeru = {-12, -77};\nstatic bool kAnimate = true;\n\n@implementation PolylinesViewController {\n NSArray *_styles;\n NSArray *_lengths;\n NSArray *_polys;\n double _pos, _step;\n GMSMapView *_mapView;\n}\n\n- (void)tick {\n for (GMSPolyline *poly in _polys) {\n poly.spans = GMSStyleSpansOffset(poly.path, _styles, _lengths, kGMSLengthGeodesic, _pos);\n }\n _pos -= _step;\n if (kAnimate) {\n __weak id weakSelf = self;\n dispatch_after(dispatch_time(DISPATCH_TIME_NOW, NSEC_PER_SEC / 10), dispatch_get_main_queue(),\n ^{\n [weakSelf tick];\n });\n }\n}\n\n- (void)initLines {\n if (!_polys) {\n NSMutableArray *polys = [NSMutableArray array];\n GMSMutablePath *path = [GMSMutablePath path];\n [path addCoordinate:kSydneyAustralia];\n [path addCoordinate:kFiji];\n [path addCoordinate:kHawaiiUSA];\n [path addCoordinate:kMountainViewUSA];\n [path addCoordinate:kLimaPeru];\n [path addCoordinate:kSydneyAustralia];\n path = [path pathOffsetByLatitude:-30 longitude:0];\n _lengths = @[ @([path lengthOfKind:kGMSLengthGeodesic] / 21) ];\n for (int i = 0; i \u003c 30; ++i) {\n GMSPolyline *poly = [[GMSPolyline alloc] init];\n poly.path = [path pathOffsetByLatitude:(i * 1.5) longitude:0];\n poly.strokeWidth = 8;\n poly.geodesic = YES;\n poly.map = _mapView;\n [polys addObject:poly];\n }\n _polys = polys;\n }\n}\n\n- (void)viewDidLoad {\n [super viewDidLoad];\n GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-30 longitude:-175 zoom:3];\n GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];\n mapView.accessibilityElementsHidden = YES;\n self.view = mapView;\n _mapView = mapView;\n\n CGFloat alpha = 1;\n UIColor *green = [UIColor colorWithRed:0 green:1 blue:0 alpha:alpha];\n UIColor *greenTransp = [UIColor colorWithRed:0 green:1 blue:0 alpha:0];\n UIColor *red = [UIColor colorWithRed:1 green:0 blue:0 alpha:alpha];\n UIColor *redTransp = [UIColor colorWithRed:1 green:0 blue:0 alpha:0];\n GMSStrokeStyle *grad1 = [GMSStrokeStyle gradientFromColor:green toColor:greenTransp];\n GMSStrokeStyle *grad2 = [GMSStrokeStyle gradientFromColor:redTransp toColor:red];\n _styles = @[\n grad1,\n grad2,\n [GMSStrokeStyle solidColor:[UIColor colorWithWhite:0 alpha:0]],\n ];\n _step = 50000;\n [self initLines];\n [self tick];\n}\n\n@end \nhttps://github.com/googlemaps-samples/maps-sdk-for-ios-samples/blob/86408feffd008565cd2cafce8aff3dc27f1f41bb/GoogleMaps/GoogleMapsDemos/Samples/PolylinesViewController.m#L16-L98\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**."]]