GoogleMaps Framework Reference

AI-generated Key Takeaways

• GMSMapLayer is a custom subclass of CALayer used as the layer class for GMSMapView and should not be directly instantiated.

• It provides access to the camera properties of the GMSMapView, like latitude, longitude, bearing, zoom level, and viewing angle.

• Modifying or animating GMSMapLayer properties can interrupt user gestures on the map and vice-versa.

• Developers can use these properties to programmatically control the map's camera view.

GMSMapLayer

@interface GMSMapLayer : GMSCALayer

GMSMapLayer is a custom subclass of CALayer, provided as the layer class on GMSMapView. This layer should not be instantiated directly. It provides model access to the camera normally defined on GMSMapView.

Modifying or animating these properties will typically interrupt any current gesture on GMSMapView, e.g., a user’s pan or rotation. Similarly, if a user performs an enabled gesture during an animation, the animation will stop ‘in-place’ (at the current presentation value).

• cameraLatitude

  Declaration

  Swift

  var cameraLatitude: CLLocationDegrees { get set }

  Objective-C

  @property(nonatomic) CLLocationDegrees cameraLatitude

• cameraLongitude

  Declaration

  Swift

  var cameraLongitude: CLLocationDegrees { get set }

  Objective-C

  @property(nonatomic) CLLocationDegrees cameraLongitude

• cameraBearing

  Declaration

  Swift

  var cameraBearing: CLLocationDirection { get set }

  Objective-C

  @property(nonatomic) CLLocationDirection cameraBearing

• cameraZoomLevel

  Declaration

  Swift

  var cameraZoomLevel: Float { get set }

  Objective-C

  @property(nonatomic) float cameraZoomLevel

• cameraViewingAngle

  Declaration

  Swift

  var cameraViewingAngle: Double { get set }

  Objective-C

  @property(nonatomic) double cameraViewingAngle