GoogleMaps Framework Reference

AI-generated Key Takeaways

• This documentation page lists globally available constants used in the Google Maps SDK for iOS.

• These constants include accessibility identifiers, zoom level limits, feature types, and style specifications.

• Constants for camera properties, marker anchors, and panorama settings are also provided.

• Developers can utilize these constants to interact with and customize various aspects of the map, markers, and overlays.

• Additionally, constants for earth radius, projected meters, and tile layer behavior are defined for advanced use cases.

Constants

The following constants are available globally.

• kGMSAccessibilityCompass

  Accessibility identifier for the compass button.

  @related GMSMapView

  Declaration

  Swift

  let kGMSAccessibilityCompass: String

  Objective-C

  extern NSString *const kGMSAccessibilityCompass

• kGMSAccessibilityMyLocation

  Accessibility identifier for the “my location” button.

  @related GMSMapView

  Declaration

  Swift

  let kGMSAccessibilityMyLocation: String

  Objective-C

  extern NSString *const kGMSAccessibilityMyLocation

• kGMSAccessibilityOutOfQuota

  Accessibility identifier for the “out of quota” error label.

  @related GMSMapView

  Declaration

  Swift

  let kGMSAccessibilityOutOfQuota: String

  Objective-C

  extern NSString *const kGMSAccessibilityOutOfQuota

• kGMSMaxZoomLevel

  The maximum zoom (closest to the Earth’s surface) permitted by the map camera.

  Declaration

  Swift

  let kGMSMaxZoomLevel: Float

  Objective-C

  extern const float kGMSMaxZoomLevel

• kGMSMinZoomLevel

  The minimum zoom (farthest from the Earth’s surface) permitted by the map camera.

  Declaration

  Swift

  let kGMSMinZoomLevel: Float

  Objective-C

  extern const float kGMSMinZoomLevel

• GMSFeatureTypeAdministrativeAreaLevel1

  Declaration

  Swift

  static let administrativeAreaLevel1: FeatureType

  Objective-C

  FOUNDATION_EXPORT GMSFeatureType const GMSFeatureTypeAdministrativeAreaLevel1

• GMSFeatureTypeAdministrativeAreaLevel2

  Declaration

  Swift

  static let administrativeAreaLevel2: FeatureType

  Objective-C

  FOUNDATION_EXPORT GMSFeatureType const GMSFeatureTypeAdministrativeAreaLevel2

• GMSFeatureTypeCountry

  Declaration

  Swift

  static let country: FeatureType

  Objective-C

  FOUNDATION_EXPORT GMSFeatureType const GMSFeatureTypeCountry

• GMSFeatureTypeLocality

  Declaration

  Swift

  static let locality: FeatureType

  Objective-C

  FOUNDATION_EXPORT GMSFeatureType const GMSFeatureTypeLocality

• GMSFeatureTypePostalCode

  Declaration

  Swift

  static let postalCode: FeatureType

  Objective-C

  FOUNDATION_EXPORT GMSFeatureType const GMSFeatureTypePostalCode

• GMSFeatureTypeSchoolDistrict

  Declaration

  Swift

  static let schoolDistrict: FeatureType

  Objective-C

  FOUNDATION_EXPORT GMSFeatureType const GMSFeatureTypeSchoolDistrict

• GMSFeatureTypeDataset

  Declaration

  Swift

  static let dataset: FeatureType

  Objective-C

  FOUNDATION_EXPORT GMSFeatureType const GMSFeatureTypeDataset

• GMSFeatureStyleStrokeWidthUnspecified

  Value to use for strokeWidth parameter when the stroke width should be unchanged.

  Declaration

  Swift

  class let strokeWidthUnspecified: CGFloat

  Objective-C

  extern const CGFloat GMSFeatureStyleStrokeWidthUnspecified

• GMSFeatureStylePointRadiusUnspecified

  Value to use for pointRadius parameter when the point radius should be unchanged.

  Declaration

  Swift

  class let pointRadiusUnspecified: CGFloat

  Objective-C

  extern const CGFloat GMSFeatureStylePointRadiusUnspecified

• kGMSEarthRadius

  Average Earth radius in meters.

  Declaration

  Swift

  let kGMSEarthRadius: CLLocationDistance

  Objective-C

  static const CLLocationDistance kGMSEarthRadius = 6371009.0

• kGMSGroundOverlayDefaultAnchor

  The default position of the ground anchor of a GMSGroundOverlay the center point of the icon.

  Declaration

  Swift

  let kGMSGroundOverlayDefaultAnchor: CGPoint

  Objective-C

  extern const CGPoint kGMSGroundOverlayDefaultAnchor

• kGMSLayerCameraLatitudeKey

  kGMSLayerCameraLatitudeKey ranges from [-85, 85], and values outside this range will be clamped.

  @related GMSMapLayer

  Declaration

  Swift

  let kGMSLayerCameraLatitudeKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerCameraLatitudeKey

• kGMSLayerCameraLongitudeKey

  kGMSLayerCameraLongitudeKey ranges from [-180, 180), and values outside this range will be wrapped to within this range.

  @related GMSMapLayer

  Declaration

  Swift

  let kGMSLayerCameraLongitudeKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerCameraLongitudeKey

• kGMSLayerCameraBearingKey

  kGMSLayerCameraBearingKey ranges from [0, 360), and values are wrapped.

  @related GMSMapLayer

  Declaration

  Swift

  let kGMSLayerCameraBearingKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerCameraBearingKey

• kGMSLayerCameraZoomLevelKey

  kGMSLayerCameraZoomLevelKey ranges from [kGMSMinZoomLevel, kGMSMaxZoomLevel], and values are clamped.

  @related GMSMapLayer

  Declaration

  Swift

  let kGMSLayerCameraZoomLevelKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerCameraZoomLevelKey

• kGMSLayerCameraViewingAngleKey

  kGMSLayerCameraViewingAngleKey ranges from zero (i.e., facing straight down) and to between 30 and 45 degrees towards the horizon, depending on the model zoom level.

  @related GMSMapLayer

  Declaration

  Swift

  let kGMSLayerCameraViewingAngleKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerCameraViewingAngleKey

• kGMSMarkerDefaultGroundAnchor

  The default position of the ground anchor of a GMSMarker: the center bottom point of the marker icon.

  Declaration

  Swift

  let kGMSMarkerDefaultGroundAnchor: CGPoint

  Objective-C

  extern const CGPoint kGMSMarkerDefaultGroundAnchor

• kGMSMarkerDefaultInfoWindowAnchor

  The default position of the info window anchor of a GMSMarker: the center top point of the marker icon.

  Declaration

  Swift

  let kGMSMarkerDefaultInfoWindowAnchor: CGPoint

  Objective-C

  extern const CGPoint kGMSMarkerDefaultInfoWindowAnchor

• kGMSMarkerLayerLatitude

  Declaration

  Swift

  let kGMSMarkerLayerLatitude: String

  Objective-C

  extern NSString *const kGMSMarkerLayerLatitude

• kGMSMarkerLayerLongitude

  Declaration

  Swift

  let kGMSMarkerLayerLongitude: String

  Objective-C

  extern NSString *const kGMSMarkerLayerLongitude

• kGMSMarkerLayerRotation

  Declaration

  Swift

  let kGMSMarkerLayerRotation: String

  Objective-C

  extern NSString *const kGMSMarkerLayerRotation

• kGMSMarkerLayerOpacity

  Declaration

  Swift

  let kGMSMarkerLayerOpacity: String

  Objective-C

  extern NSString *const kGMSMarkerLayerOpacity

• kGMSLayerPanoramaHeadingKey

  kGMSLayerPanoramaHeadingKey ranges from [0, 360).

  @related GMSPanoramaLayer

  Declaration

  Swift

  let kGMSLayerPanoramaHeadingKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerPanoramaHeadingKey

• kGMSLayerPanoramaPitchKey

  kGMSLayerPanoramaPitchKey ranges from [-90, 90].

  @related GMSPanoramaLayer

  Declaration

  Swift

  let kGMSLayerPanoramaPitchKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerPanoramaPitchKey

• kGMSLayerPanoramaZoomKey

  kGMSLayerCameraZoomLevelKey ranges from [1, 5], default 1.

  @related GMSPanoramaLayer

  Declaration

  Swift

  let kGMSLayerPanoramaZoomKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerPanoramaZoomKey

• kGMSLayerPanoramaFOVKey

  kGMSLayerPanoramaFOVKey ranges from 1, 160, default 90.

  @related GMSPanoramaLayer

  Declaration

  Swift

  let kGMSLayerPanoramaFOVKey: String

  Objective-C

  extern NSString *const _Nonnull kGMSLayerPanoramaFOVKey

• kGMSEquatorProjectedMeter

  kGMSEquatorProjectedMeter may be useful when specifying lengths for segment in “projected” units. The value of kGMSEquatorProjectedMeter, 1/(pi * EarthRadius), represents the length of one meter at the equator in projected units. For example to specify a projected length that corresponds to 100km at the equator use 100000 * kGMSEquatorProjectedMeter. See [GMSPath segmentsForLength:kind:], [GMSPath lengthOfKind:] and kGMSLengthProjected.

  Declaration

  Swift

  let kGMSEquatorProjectedMeter: Double

  Objective-C

  extern const double kGMSEquatorProjectedMeter

• kGMSPolygonLayerStrokeWidth

  Declaration

  Swift

  let kGMSPolygonLayerStrokeWidth: String

  Objective-C

  extern NSString *const kGMSPolygonLayerStrokeWidth

• kGMSPolygonLayerStrokeColor

  Declaration

  Swift

  let kGMSPolygonLayerStrokeColor: String

  Objective-C

  extern NSString *const kGMSPolygonLayerStrokeColor

• kGMSPolygonLayerFillColor

  Declaration

  Swift

  let kGMSPolygonLayerFillColor: String

  Objective-C

  extern NSString *const kGMSPolygonLayerFillColor

• kGMSTileLayerNoTile

  Stub tile that is used to indicate that no tile exists for a specific tile coordinate. May be returned by -tileForX:y:zoom: on GMSTileOverlay.

  Declaration

  Swift

  let kGMSTileLayerNoTile: UIImage

  Objective-C

  extern UIImage *const _Nonnull kGMSTileLayerNoTile