이 단계에서는 하나 이상의 지형지물 레이어가 사용 설정된 스타일과 연결된 지도 ID가 필요합니다. Cloud 콘솔에서 지도 ID가 올바르게 설정되었는지 확인하려면 지도 관리에서 구성된 방식을 검토하세요.
Swift
// A map ID using a style with one or more feature layers enabledletmapID=GMSMapID(identifier:"YOUR_MAP_ID")letmapView=GMSMapView(frame:.zero,mapID:mapID,camera:GMSCameraPosition(latitude:40,longitude:-80,zoom:7))
Objective-C
// A map ID using a style with one or more feature layers enabledGMSMapID*mapID=[GMSMapIDmapIDWithIdentifier:@"MAP_ID"];GMSMapView*mapView=[GMSMapViewmapWithFrame:CGRectZeromapID:mapIDcamera:[GMSCameraPositioncameraWithLatitude:40longitude:-80zoom:7]];
경계를 위한 데이터 기반 스타일 지정을 사용하려면 Google Cloud 콘솔에서 사용 설정되고 지도 ID와 연결된 기능이 필요합니다. 지도 ID는 변경될 수 있으므로 GMSMapView에서 mapView.mapCapabilities를 호출하여 특정 기능 (예: 데이터 기반 스타일 지정)을 호출하기 전에 사용할 수 있는지 확인할 수 있습니다.
GMSViewDelegate를 구독하여 지도 기능의 변경사항을 감지할 수도 있습니다. 이 예에서는 프로토콜을 사용하여 데이터 기반 스타일 지정 요구사항을 확인하는 방법을 보여줍니다.
Swift
classSampleViewController:UIViewController{privatelazyvarmapView:GMSMapView=GMSMapView(frame:.zero,mapID:GMSMapID(identifier:"YOUR_MAP_ID"),camera:GMSCameraPosition(latitude:40,longitude:-80,zoom:7))overridefuncloadView(){self.view=mapViewmapView.delegate=self}}extensionSampleViewController:GMSMapViewDelegate{funcmapView(_mapView:GMSMapView,didChangemapCapabilities:GMSMapCapabilityFlags){if(!mapCapabilities.contains(.dataDrivenStyling)){// Data-driven styling is *not* available, add a fallback.// Existing feature layers are also unavailable.}}}
Objective-C
@interfaceSampleViewController: UIViewController<GMSMapViewDelegate>
@end@implementationSampleViewController-(void)loadView{GMSMapView*mapView=[GMSMapViewmapWithFrame:CGRectZeromapID:[GMSMapIDmapIDWithIdentifier:@"MAP_ID"]camera:[GMSCameraPositioncameraWithLatitude:40longitude:-80zoom:7]];mapView.delegete=self;self.view=mapView;}-(void)mapView:(GMSMapView*)mapViewdidChangeMapCapabilities:(GMSMapCapabilityFlags)mapCapabilities{if(!(mapCapabilities&GMSMapCapabilityFlagsDataDrivenStyling)){// Data-driven styling is *not* available, add a fallback.// Existing feature layers are also unavailable.}}@end
[null,null,["최종 업데이트: 2025-08-31(UTC)"],[[["\u003cp\u003eData-driven styling for boundaries requires creating a map ID and associating it with a custom map style that includes selected feature layers.\u003c/p\u003e\n"],["\u003cp\u003eYou can manage feature layers, such as localities and states, in the Google Cloud console to control which boundaries are displayed.\u003c/p\u003e\n"],["\u003cp\u003eUpdate your map initialization code to use the map ID, ensuring data-driven styling is enabled for the map.\u003c/p\u003e\n"],["\u003cp\u003eUtilize \u003ccode\u003emapView.featureLayer(of:)\u003c/code\u003e to access specific feature layers on your map for further styling or interaction.\u003c/p\u003e\n"],["\u003cp\u003eVerify map capabilities, including data-driven styling, using \u003ccode\u003emapView.mapCapabilities\u003c/code\u003e or by subscribing to \u003ccode\u003eGMSViewDelegate\u003c/code\u003e to detect changes and implement fallbacks if needed.\u003c/p\u003e\n"]]],[],null,["Select platform: [Android](/maps/documentation/android-sdk/dds-boundaries/start \"View this page for the Android platform docs.\") [iOS](/maps/documentation/ios-sdk/dds-boundaries/start \"View this page for the iOS platform docs.\") [JavaScript](/maps/documentation/javascript/dds-boundaries/start \"View this page for the JavaScript platform docs.\")\n\n\u003cbr /\u003e\n\nTo use data-driven styling for boundaries you must create a map ID. Next, you\nmust create a new map style, select the needed boundary feature layers, and\nassociate the style with your map ID.\n\nCreate a map ID\n\nA [mapID](/maps/documentation/get-map-id) is a unique identifier that represents\na single instance of a Google Map. You can create map IDs and update a style\nassociated with a map ID at any time in the Google Cloud console.\n\nCreate a new map style\n\nTo create a new map style, follow the instructions in [Manage map\nstyles](/maps/documentation/ios-sdk/cloud-customization/map-styles) to create\nthe style. Once complete associate the style with the newly created map ID.\n| **Experimental:** This feature can only be set for light map styles. When you link a light map style that has this feature enabled to a [map\n| ID](../map-ids/mapid-over), the enabled layers are also available for the dark map style.\n\nSelect feature layers\n\nIn the Google Cloud console you can select which feature layers to display. This\ndetermines which kinds of boundaries appear on the map (for example localities,\nstates, and so on).\n| **Important:** For optimal performance, only select the layers you need.\n\nManage feature layers\n\n1. In the Google Cloud console, [go to the Map Styles\n page](https://console.cloud.google.com/project/_/google/maps-apis/studio/styles)\n\n2. Select a project if prompted.\n\n3. Select a map style.\n\n4. Click the **Feature layers** drop-down to add or remove layers.\n\n5. Click **Save** to save your changes and make them available to your maps.\n\nUpdate your map initialization code\n\nThis step requires a map ID be associated with a style with one or more feature\nlayers enabled. To verify your map ID is set up correctly in\nCloud console, review how it is configured under [Maps\nManagement](https://console.cloud.google.com/google/maps-apis/studio/maps). \n\nSwift \n\n```swift\n// A map ID using a style with one or more feature layers enabled\n\nlet mapID = GMSMapID(identifier: \"YOUR_MAP_ID\")\nlet mapView = GMSMapView(frame: .zero, mapID: mapID, camera: GMSCameraPosition(latitude: 40, longitude: -80, zoom: 7))\n```\n\nObjective-C \n\n```objective-c\n// A map ID using a style with one or more feature layers enabled\n\nGMSMapID *mapID = [GMSMapID mapIDWithIdentifier:@\"MAP_ID\"];\nGMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero mapID:mapID camera:[GMSCameraPosition cameraWithLatitude:40 longitude:-80 zoom:7]];\n```\n| **Important:** For testing, you can skip the step of creating and configuring a [map\n| ID](/maps/documentation/get-map-id), by using mapId: [`DEMO_MAP_ID`](/maps/documentation/ios-sdk/reference/objc/Classes/GMSMapID) in your app code. `DEMO_MAP_ID` is intended for testing purposes only. Don't use `DEMO_MAP_ID` in a production environment.\n\nAdd feature layers to a map\n\nTo get a reference to a feature layer on your map, call\n[`mapView.featureLayer(of:)`](/maps/documentation/ios-sdk/reference/objc/Classes/GMSMapView#-featurelayeroffeaturetype:)\nwhen the map initializes: \n\nSwift \n\n```swift\nlet layer = mapView.featureLayer(of: .locality)\n```\n\nObjective-C \n\n```objective-c\nGMSFeatureLayer *layer = [mapView featureLayerOfFeatureType:GMSFeatureTypeLocality];\n```\n\nCheck map capabilities\n\nData-driven styling for boundaries requires capabilities which are enabled in the\nGoogle Cloud console, and associated with a map ID. Because map IDs are subject to\nchange, you can call\n[`mapView.mapCapabilities`](/maps/documentation/ios-sdk/reference/objc/Classes/GMSMapView#mapcapabilities)\non a [`GMSMapView`](/maps/documentation/ios-sdk/reference/objc/Classes/GMSMapView) to verify whether a certain capability (for\nexample data-driven styling) is available prior to calling it.\n\nYou can also detect changes in map capabilities by subscribing to\n[`GMSViewDelegate`](/maps/documentation/ios-sdk/reference/objc/Protocols/GMSMapViewDelegate). This example shows how to use the\nprotocol to check for data-driven styling requirements. \n\nSwift \n\n```swift\nclass SampleViewController: UIViewController {\n\n private lazy var mapView: GMSMapView = GMSMapView(frame: .zero, mapID: GMSMapID(identifier: \"YOUR_MAP_ID\"), camera: GMSCameraPosition(latitude: 40, longitude: -80, zoom: 7))\n\n override func loadView() {\n self.view = mapView\n mapView.delegate = self\n }\n}\n\nextension SampleViewController: GMSMapViewDelegate {\n func mapView(_ mapView: GMSMapView, didChange mapCapabilities: GMSMapCapabilityFlags) {\n if (!mapCapabilities.contains(.dataDrivenStyling)) {\n // Data-driven styling is *not* available, add a fallback.\n // Existing feature layers are also unavailable.\n }\n }\n}\n```\n\nObjective-C \n\n```objective-c\n@interface SampleViewController: UIViewController \u003cGMSMapViewDelegate\u003e\n@end\n\n@implementation SampleViewController\n- (void)loadView {\n GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero mapID:[GMSMapID mapIDWithIdentifier:@\"MAP_ID\"] camera:[GMSCameraPosition cameraWithLatitude:40 longitude:-80 zoom:7]];\n mapView.delegete = self;\n self.view = mapView;\n}\n\n- (void)mapView:(GMSMapView *)mapView didChangeMapCapabilities:(GMSMapCapabilityFlags)mapCapabilities {\n if (!(mapCapabilities & GMSMapCapabilityFlagsDataDrivenStyling)) {\n // Data-driven styling is *not* available, add a fallback.\n // Existing feature layers are also unavailable.\n }\n}\n@end\n```"]]