开始使用
您必须先配置开发环境,然后才能试用该示例代码。如需了解详情,请参阅 Maps SDK for iOS 代码示例。
查看代码
Swift
import GoogleMaps import UIKit final class MarkerEventsViewController: UIViewController { private lazy var mapView: GMSMapView = { let camera = GMSCameraPosition(latitude: -37.81969, longitude: 144.966085, zoom: 4) return GMSMapView(frame: .zero, camera: camera) }() private var melbourneMarker = GMSMarker( position: CLLocationCoordinate2D(latitude: -37.81969, longitude: 144.966085)) override func loadView() { let sydneyMarker = GMSMarker( position: CLLocationCoordinate2D(latitude: -33.8683, longitude: 151.2086)) sydneyMarker.map = mapView melbourneMarker.map = mapView mapView.delegate = self view = mapView } } extension MarkerEventsViewController: GMSMapViewDelegate { func mapView(_ mapView: GMSMapView, markerInfoWindow marker: GMSMarker) -> UIView? { if marker == melbourneMarker { return UIImageView(image: UIImage(named: "Icon")) } return nil } func mapView(_ mapView: GMSMapView, didTap marker: GMSMarker) -> Bool { // Animate to the marker CATransaction.begin() CATransaction.setAnimationDuration(3) let camera = GMSCameraPosition(target: marker.position, zoom: 8, bearing: 50, viewingAngle: 60) mapView.animate(to: camera) CATransaction.commit() // Melbourne marker has a InfoWindow so return false to allow markerInfoWindow to // fire. Also check that the marker isn't already selected so that the InfoWindow // doesn't close. if marker == melbourneMarker && mapView.selectedMarker != melbourneMarker { return false } return true } }
Objective-C
#import "GoogleMapsDemos/Samples/MarkerEventsViewController.h" #import <QuartzCore/QuartzCore.h> #import <GoogleMaps/GoogleMaps.h> @implementation MarkerEventsViewController { GMSMapView *_mapView; GMSMarker *_melbourneMarker; BOOL _rotating; } - (void)viewDidLoad { [super viewDidLoad]; GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-37.81969 longitude:144.966085 zoom:4]; _mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera]; GMSMarker *sydneyMarker = [[GMSMarker alloc] init]; sydneyMarker.position = CLLocationCoordinate2DMake(-33.8683, 151.2086); sydneyMarker.map = _mapView; _melbourneMarker = [[GMSMarker alloc] init]; _melbourneMarker.position = CLLocationCoordinate2DMake(-37.81969, 144.966085); _melbourneMarker.map = _mapView; _mapView.delegate = self; self.view = _mapView; } #pragma mark - GMSMapViewDelegate - (UIView *)mapView:(GMSMapView *)mapView markerInfoWindow:(GMSMarker *)marker { if (marker == _melbourneMarker) { return [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Icon"]]; } return nil; } - (BOOL)mapView:(GMSMapView *)mapView didTapMarker:(GMSMarker *)marker { GMSCameraPosition *camera = [[GMSCameraPosition alloc] initWithTarget:marker.position zoom:8 bearing:50 viewingAngle:60]; // Animate to the marker [CATransaction begin]; [CATransaction setAnimationDuration:3.f]; // 3 second animation [CATransaction setCompletionBlock:^{ if (_rotating) { // Animation was interrupted by orientation change. [CATransaction setDisableActions:true]; // Disable animation to avoid interruption from rotation. [_mapView animateToCameraPosition:camera]; } }]; [mapView animateToCameraPosition:camera]; [CATransaction commit]; // Melbourne marker has a InfoWindow so return NO to allow markerInfoWindow to fire. Also check // that the marker isn't already selected so that the InfoWindow doesn't close. if (marker == _melbourneMarker && mapView.selectedMarker != _melbourneMarker) { return NO; } // The Tap has been handled so return YES return YES; } - (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator { _rotating = true; [coordinator animateAlongsideTransition:nil completion:^( id<UIViewControllerTransitionCoordinatorContext> _Nonnull context) { _rotating = false; }]; [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator]; } @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
,将示例代码库克隆到本地目录中。 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 install
open GoogleMapsSwiftDemos.xcworkspace
Objective-C
cd maps-sdk-for-ios-samples-main/GoogleMaps
pod install
open 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
。 - 修改
SDKConstants.swift
文件(Swift 版)或SDKDemoAPIKey.h
文件(Objective-C 版),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,因为它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一个,以试用 Maps SDK for iOS 的一项功能。
- 如果系统提示您允许 GoogleMapsDemos 获取您的位置信息,请选择允许。