MGLMapView

@interface MGLMapView : UIView <MGLStylable>

An interactive, customizable map view with an interface similar to the one provided by Apple’s MapKit.

Using MGLMapView, you can embed the map inside a view, allow users to manipulate it with standard gestures, animate the map between different viewpoints, and present information in the form of annotations and overlays.

The map view loads scalable vector tiles that conform to the Vector Tile Specification. It styles them with a style that conforms to the GL Style Specification. Such styles can be designed in MapTiler Customize and hosted on maptiler.com.

A collection of MapTiler-hosted styles is available through the MGLStyle class. These basic styles use MapTiler Streets or MapTiler Satellite data sources, but you can specify a custom style that makes use of your own data.

MapTiler-hosted vector tiles and styles require an API access token, which you can obtain from the MapTiler account page. Access tokens associate requests to MapTiler’s vector tile and style APIs with your MapTiler account. They also deter other developers from using your styles without your permission.

Because MGLMapView loads asynchronously, several delegate methods are available for receiving map-related updates. These methods can be used to ensure that certain operations have completed before taking any additional actions. Information on these methods is located in the MGLMapViewDelegate protocol documentation.

Adding your own gesture recognizer to MGLMapView will block the corresponding gesture recognizer built into MGLMapView. To avoid conflicts, define which gesture takes precedence. For example, you can create your own UITapGestureRecognizer that will be invoked only if the default MGLMapView tap gesture fails:

let mapTapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(myCustomFunction))
for recognizer in mapView.gestureRecognizers! where recognizer is UITapGestureRecognizer {
mapTapGestureRecognizer.require(toFail: recognizer)
}
mapView.addGestureRecognizer(mapTapGestureRecognizer)

Note

You are responsible for getting permission to use the map data and for ensuring that your use adheres to the relevant terms of use.

Creating Instances

`-initWithFrame:`

Initializes and returns a newly allocated map view with the specified frame and the default style.

Declaration

Objective-C

- (nonnull instancetype)initWithFrame:(CGRect)frame;

Swift

init(frame: CGRect)

Parameters

frame

The frame for the view, measured in points.

Return Value

An initialized map view.

`-initWithFrame:styleURL:`

Initializes and returns a newly allocated map view with the specified frame and style URL.

Declaration

Objective-C

- (nonnull instancetype)initWithFrame:(CGRect)frame
                         styleURL:(nullable NSURL *)styleURL;

Swift

init(frame: CGRect, styleURL: URL?)

Parameters

frame

The frame for the view, measured in points.

styleURL

URL of the map style to display. The URL may be a full HTTP or HTTPS URL, a GL style URL (https://api.maptiler.com/maps/streets-v2/style.json), or a path to a local file relative to the application’s resource path. Specify nil for the default style.

Return Value

An initialized map view.

Accessing the Delegate

`delegate`

The receiver’s delegate.

A map view sends messages to its delegate to notify it of changes to its contents or the viewpoint. The delegate also provides information about annotations displayed on the map, such as the styles to apply to individual annotations.

Declaration

Objective-C

@property (nonatomic, weak, readwrite, nullable) id<MGLMapViewDelegate> delegate;

Configuring the Map’s Appearance

`style`

The style currently displayed in the receiver.

Unlike the styleURL property, this property is set to an object that allows you to manipulate every aspect of the style locally.

If the style is loading, this property is set to nil until the style finishes loading. If the style has failed to load, this property is set to nil. Because the style loads asynchronously, you should manipulate it in the -[MGLMapViewDelegate mapView:didFinishLoadingStyle:] or -[MGLMapViewDelegate mapViewDidFinishLoadingMap:] method. It is not possible to manipulate the style before it has finished loading.

Note

The default styles provided by MapTiler contain sources and layers with identifiers that will change over time. Applications that use APIs that manipulate a style’s sources and layers must first set the style URL to an explicitly versioned style using a convenience method like +[MGLStyle outdoorsStyleURLWithVersion:], MGLMapView’s “Style URL” inspectable in Interface Builder, or a manually constructed NSURL.

Declaration

Objective-C

@property (nonatomic, readonly, nullable) MGLStyle *style;

Swift

var style: MGLStyle? { get }

`styleURL`

URL of the style currently displayed in the receiver.

The URL may be a full HTTP or HTTPS URL, a GL style URL (https://api.maptiler.com/maps/streets-v2/style.json), or a path to a local file relative to the application’s resource path.

If you set this property to nil, the receiver will use the default style and this property will automatically be set to that style’s URL.

If you want to modify the current style without replacing it outright, or if you want to introspect individual style attributes, use the style property.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite, null_resettable)
NSURL *styleURL;

Swift

var styleURL: URL! { get set }

`-reloadStyle:`

Reloads the style.

You do not normally need to call this method. The map view automatically responds to changes in network connectivity by reloading the style. You may need to call this method if you change the access token after a style has loaded but before loading a style associated with a different MapTiler account.

This method does not bust the cache. Even if the style has recently changed on the server, calling this method does not necessarily ensure that the map view reflects those changes.

Declaration

Objective-C

- (void)reloadStyle:(nullable id)sender;

Swift

@IBAction func reloadStyle(_ sender: Any?)

`automaticallyAdjustsContentInset`

A boolean value that indicates if whether the map view should automatically adjust its content insets.

When this property is set to YES the map automatically updates its contentInset property to account for any area not covered by navigation bars, tab bars, toolbars, and other ancestors that obscure the map view.

Declaration

Objective-C

@property (atomic, assign, unsafe_unretained, readwrite)
BOOL automaticallyAdjustsContentInset;

Swift

var automaticallyAdjustsContentInset: Bool { get set }

`showsScale`

A Boolean value indicating whether the map may display scale information.

The scale bar may not be shown at all zoom levels. The scale bar becomes visible when the maximum distance visible on the map view is less than 400 miles (800 kilometers). The zoom level where this occurs depends on the latitude at the map view’s center coordinate, as well as the device screen width. At latitudes farther from the equator, the scale bar becomes visible at lower zoom levels.

The unit of measurement is determined by the user’s device locale.

The view controlled by this property is available at scaleBar. The default value of this property is NO.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite) BOOL showsScale;

Swift

var showsScale: Bool { get set }

`scaleBar`

A control indicating the scale of the map. The scale bar is positioned in the upper-left corner. Enable the scale bar via showsScale.

Declaration

Objective-C

@property (nonatomic, readonly) UIView *_Nonnull scaleBar;

Swift

var scaleBar: UIView { get }

`scaleBarPosition`

The position of the scale bar. The default value is MGLOrnamentPositionTopLeft.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLOrnamentPosition scaleBarPosition;

Swift

var scaleBarPosition: MGLOrnamentPosition { get set }

`scaleBarMargins`

A CGPoint indicating the position offset of the scale bar.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
CGPoint scaleBarMargins;

Swift

var scaleBarMargins: CGPoint { get set }

`compassView`

A control indicating the map’s direction and allowing the user to manipulate the direction, positioned in the upper-right corner.

Declaration

Objective-C

@property (nonatomic, readonly) MGLCompassButton *_Nonnull compassView;

Swift

var compassView: MGLCompassButton { get }

`compassViewPosition`

The position of the compass view. The default value is MGLOrnamentPositionTopRight.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLOrnamentPosition compassViewPosition;

Swift

var compassViewPosition: MGLOrnamentPosition { get set }

`compassViewMargins`

A CGPoint indicating the position offset of the compass.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
CGPoint compassViewMargins;

Swift

var compassViewMargins: CGPoint { get set }

`logoView`

The MapTiler wordmark, positioned in the lower-left corner.

Note

The MapTiler terms of service, which govern the use of MapTiler-hosted vector tiles and styles, require most MapTiler customers to display the MapTiler attribution. If this applies to you, do not hide this view or change its contents.

Declaration

Objective-C

@property (nonatomic, readonly) UIImageView *_Nonnull logoView;

Swift

var logoView: UIImageView { get }

`logoViewPosition`

The position of the logo view. The default value is MGLOrnamentPositionBottomLeft.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLOrnamentPosition logoViewPosition;

Swift

var logoViewPosition: MGLOrnamentPosition { get set }

`logoViewMargins`

A CGPoint indicating the position offset of the logo.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
CGPoint logoViewMargins;

Swift

var logoViewMargins: CGPoint { get set }

`attributionButton`

A view showing legally required copyright notices, positioned at the bottom-right of the map view.

If you choose to reimplement this view, assign the -showAttribution: method as the action for your view to present the default notices and settings.

Note

The MapTiler terms of service, which govern the use of MapTiler-hosted vector tiles and styles, require these copyright notices to accompany any map that features MapTiler-designed styles, OpenStreetMap (OSM) data, or other MapTiler data such as satellite or terrain data. If that applies to this map view, do not hide this view or remove any notices from it.

Declaration

Objective-C

@property (nonatomic, readonly) UIButton *_Nonnull attributionButton;

Swift

var attributionButton: UIButton { get }

`attributionButtonPosition`

The position of the attribution button. The default value is MGLOrnamentPositionBottomRight.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLOrnamentPosition attributionButtonPosition;

Swift

var attributionButtonPosition: MGLOrnamentPosition { get set }

`attributionButtonMargins`

A CGPoint indicating the position offset of the attribution.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
CGPoint attributionButtonMargins;

Swift

var attributionButtonMargins: CGPoint { get set }

`-showAttribution:`

Show the attribution action sheet.

This action is performed when the user taps on the attribution button provided by default via the attributionButton property. If you implement a custom attribution button, you should add this action to the button.

Declaration

Objective-C

- (void)showAttribution:(nonnull id)sender;

Swift

@IBAction func showAttribution(_ sender: Any)

`preferredFramesPerSecond`

The preferred frame rate at which the map view is rendered.

The default value for this property is MGLMapViewPreferredFramesPerSecondDefault, which will adaptively set the preferred frame rate based on the capability of the user’s device to maintain a smooth experience.

In addition to the provided MGLMapViewPreferredFramesPerSecond options, this property can be set to arbitrary integer values.

See

CADisplayLink.preferredFramesPerSecond

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLMapViewPreferredFramesPerSecond preferredFramesPerSecond;

Swift

var preferredFramesPerSecond: MGLMapViewPreferredFramesPerSecond { get set }

`prefetchesTiles`

A Boolean value indicating whether the map should prefetch tiles.

When this property is set to YES, the map view prefetches tiles designed for a low zoom level and displays them until receiving more detailed tiles for the current zoom level. The prefetched tiles typically contain simplified versions of each shape, improving the map view’s perceived performance.

The default value of this property is YES.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite) BOOL prefetchesTiles;

Swift

var prefetchesTiles: Bool { get set }

Displaying the User’s Location

`locationManager`

The object that this map view uses to start and stop the delivery of location-related updates.

To receive the current user location, implement the -[MGLMapViewDelegate mapView:didUpdateUserLocation:] and -[MGLMapViewDelegate mapView:didFailToLocateUserWithError:] methods.

If setting this property to nil or if no custom manager is provided this property is set to the default location manager.

MGLMapView uses a default location manager. If you want to substitute your own location manager, you should do so by setting this property before setting showsUserLocation to YES. To restore the default location manager, set this property to nil.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite, null_resettable)
id<MGLLocationManager>
    locationManager;

`showsUserLocation`

A Boolean value indicating whether the map may display the user location.

Setting this property to YES causes the map view to use the Core Location framework to find the current location. As long as this property is YES, the map view continues to track the user’s location and update it periodically.

This property does not indicate whether the user’s position is actually visible on the map, only whether the map view is allowed to display it. To determine whether the user’s position is visible, use the userLocationVisible property. The default value of this property is NO.

Your app must specify a value for NSLocationWhenInUseUsageDescription or NSLocationAlwaysUsageDescription in its Info.plist to satisfy the requirements of the underlying Core Location framework when enabling this property.

If you implement a custom location manager, set the locationManager before calling showsUserLocation.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
BOOL showsUserLocation;

Swift

var showsUserLocation: Bool { get set }

`userLocationVisible`

A Boolean value indicating whether the device’s current location is visible in the map view.

Use showsUserLocation to control the visibility of the on-screen user location annotation.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readonly,
      getter=isUserLocationVisible) BOOL userLocationVisible;

Swift

var isUserLocationVisible: Bool { get }

`userLocation`

Returns the annotation object indicating the user’s current location.

Declaration

Objective-C

@property (nonatomic, readonly, nullable) MGLUserLocation *userLocation;

Swift

var userLocation: MGLUserLocation? { get }

`userTrackingMode`

The mode used to track the user location. The default value is MGLUserTrackingModeNone.

Changing the value of this property updates the map view with an animated transition. If you don’t want to animate the change, use the -setUserTrackingMode:animated: method instead.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLUserTrackingMode userTrackingMode;

Swift

var userTrackingMode: MGLUserTrackingMode { get set }

`-setUserTrackingMode:animated:`

Deprecated

Use -setUserTrackingMode:animated:completionHandler: instead.

Deprecated. Sets the mode used to track the user location, with an optional transition.

To specify a completion handler to execute after the animation finishes, use the -setUserTrackingMode:animated:completionHandler: method.

Declaration

Objective-C

- (void)setUserTrackingMode:(MGLUserTrackingMode)mode animated:(BOOL)animated;

Swift

func setUserTrackingMode(_ mode: MGLUserTrackingMode, animated: Bool)

Parameters

mode

The mode used to track the user location.

animated

If YES, there is an animated transition from the current viewport to a viewport that results from the change to mode. If NO, the map view instantaneously changes to the new viewport. This parameter only affects the initial transition; subsequent changes to the user location or heading are always animated.

`-setUserTrackingMode:animated:completionHandler:`

Sets the mode used to track the user location, with an optional transition and completion handler.

Declaration

Objective-C

- (void)setUserTrackingMode:(MGLUserTrackingMode)mode
               animated:(BOOL)animated
      completionHandler:(nullable void (^)(void))completion;

Swift

func setUserTrackingMode(_ mode: MGLUserTrackingMode, animated: Bool, completionHandler completion: (() -> Void)? = nil)

Parameters

mode

The mode used to track the user location.

animated

completion

The block executed after the animation finishes.

`userLocationVerticalAlignment`

Deprecated

Use -[MGLMapViewDelegate mapViewUserLocationAnchorPoint:] instead.

The vertical alignment of the user location annotation within the receiver. The default value is MGLAnnotationVerticalAlignmentCenter.

Changing the value of this property updates the map view with an animated transition. If you don’t want to animate the change, use the -setUserLocationVerticalAlignment:animated: method instead.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLAnnotationVerticalAlignment userLocationVerticalAlignment;

Swift

var userLocationVerticalAlignment: MGLAnnotationVerticalAlignment { get set }

`-setUserLocationVerticalAlignment:animated:`

Deprecated

Use -[MGLMapViewDelegate mapViewUserLocationAnchorPoint:] instead.

Sets the vertical alignment of the user location annotation within the receiver, with an optional transition.

Declaration

Objective-C

- (void)setUserLocationVerticalAlignment:
        (MGLAnnotationVerticalAlignment)alignment
                            animated:(BOOL)animated;

Swift

func setUserLocationVerticalAlignment(_ alignment: MGLAnnotationVerticalAlignment, animated: Bool)

Parameters

alignment

The vertical alignment of the user location annotation.

animated

If YES, the user location annotation animates to its new position within the map view. If NO, the user location annotation instantaneously moves to its new position.

`-updateUserLocationAnnotationView`

Updates the position of the user location annotation view by retreiving the user’s last known location.

Declaration

Objective-C

- (void)updateUserLocationAnnotationView;

Swift

func updateUserLocationAnnotationView()

`-updateUserLocationAnnotationViewAnimatedWithDuration:`

Updates the position of the user location annotation view by retreiving the user’s last known location with a specified duration.

Declaration

Objective-C

- (void)updateUserLocationAnnotationViewAnimatedWithDuration:
(NSTimeInterval)duration;

Swift

func updateUserLocationAnnotationViewAnimated(withDuration duration: TimeInterval)

Parameters

duration

The duration to animate the change in seconds.

`showsUserHeadingIndicator`

A Boolean value indicating whether the user location annotation may display a permanent heading indicator.

Setting this property to YES causes the default user location annotation to appear and always show an arrow-shaped heading indicator, if heading is available. This property does not rotate the map; for that, see MGLUserTrackingModeFollowWithHeading.

This property has no effect when userTrackingMode is MGLUserTrackingModeFollowWithHeading or MGLUserTrackingModeFollowWithCourse.

The default value of this property is NO.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
BOOL showsUserHeadingIndicator;

Swift

var showsUserHeadingIndicator: Bool { get set }

`displayHeadingCalibration`

Whether the map view should display a heading calibration alert when necessary. The default value is YES.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
BOOL displayHeadingCalibration;

Swift

var displayHeadingCalibration: Bool { get set }

`targetCoordinate`

The geographic coordinate that is the subject of observation as the user location is being tracked.

By default, this property is set to an invalid coordinate, indicating that there is no target. In course tracking mode, the target forms one of two foci in the viewport, the other being the user location annotation. Typically, this property is set to a destination or waypoint in a real-time navigation scene. As the user annotation moves toward the target, the map automatically zooms in to fit both foci optimally within the viewport.

This property has no effect if the userTrackingMode property is set to a value other than MGLUserTrackingModeFollowWithCourse.

Changing the value of this property updates the map view with an animated transition. If you don’t want to animate the change, use the -setTargetCoordinate:animated: method instead.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
CLLocationCoordinate2D targetCoordinate;

Swift

var targetCoordinate: CLLocationCoordinate2D { get set }

`-setTargetCoordinate:animated:`

Deprecated

Use -setTargetCoordinate:animated:completionHandler: instead.

Deprecated. Sets the geographic coordinate that is the subject of observation as the user location is being tracked, with an optional transition animation.

By default, the target coordinate is set to an invalid coordinate, indicating that there is no target. In course tracking mode, the target forms one of two foci in the viewport, the other being the user location annotation. Typically, the target is set to a destination or waypoint in a real-time navigation scene. As the user annotation moves toward the target, the map automatically zooms in to fit both foci optimally within the viewport.

This method has no effect if the userTrackingMode property is set to a value other than MGLUserTrackingModeFollowWithCourse.

To specify a completion handler to execute after the animation finishes, use the -setTargetCoordinate:animated:completionHandler: method.

Declaration

Objective-C

- (void)setTargetCoordinate:(CLLocationCoordinate2D)targetCoordinate
               animated:(BOOL)animated;

Swift

func setTargetCoordinate(_ targetCoordinate: CLLocationCoordinate2D, animated: Bool)

Parameters

targetCoordinate

The target coordinate to fit within the viewport.

animated

If YES, the map animates to fit the target within the map view. If NO, the map fits the target instantaneously.

`-setTargetCoordinate:animated:completionHandler:`

Sets the geographic coordinate that is the subject of observation as the user location is being tracked, with an optional transition animation and completion handler.

This method has no effect if the userTrackingMode property is set to a value other than MGLUserTrackingModeFollowWithCourse.

Declaration

Objective-C

- (void)setTargetCoordinate:(CLLocationCoordinate2D)targetCoordinate
               animated:(BOOL)animated
      completionHandler:(nullable void (^)(void))completion;

Swift

func setTargetCoordinate(_ targetCoordinate: CLLocationCoordinate2D, animated: Bool, completionHandler completion: (() -> Void)? = nil)

Parameters

targetCoordinate

The target coordinate to fit within the viewport.

animated

If YES, the map animates to fit the target within the map view. If NO, the map fits the target instantaneously.

completion

The block executed after the animation finishes.

Configuring How the User Interacts with the Map

`zoomEnabled`

A Boolean value that determines whether the user may zoom the map in and out, changing the zoom level.

When this property is set to YES, the default, the user may zoom the map in and out by pinching two fingers or by double tapping, holding, and moving the finger up and down.

This property controls only user interactions with the map. If you set the value of this property to NO, you may still change the map zoom programmatically.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite, getter=isZoomEnabled)
BOOL zoomEnabled;

Swift

var isZoomEnabled: Bool { get set }

`scrollEnabled`

A Boolean value that determines whether the user may scroll around the map, changing the center coordinate.

When this property is set to YES, the default, the user may scroll the map by dragging or swiping with one finger.

This property controls only user interactions with the map. If you set the value of this property to NO, you may still change the map location programmatically.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite,
      getter=isScrollEnabled) BOOL scrollEnabled;

Swift

var isScrollEnabled: Bool { get set }

`panScrollingMode`

The scrolling mode the user is allowed to use to interact with the map.

MGLPanScrollingModeHorizontal only allows the user to scroll horizontally on the map, restricting a user’s ability to scroll vertically. MGLPanScrollingModeVertical only allows the user to scroll vertically on the map, restricting a user’s ability to scroll horizontally. MGLPanScrollingModeDefault allows the user to scroll both horizontally and vertically on the map.

By default, this property is set to MGLPanScrollingModeDefault.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLPanScrollingMode panScrollingMode;

Swift

var panScrollingMode: MGLPanScrollingMode { get set }

`rotateEnabled`

A Boolean value that determines whether the user may rotate the map, changing the direction.

When this property is set to YES, the default, the user may rotate the map by moving two fingers in a circular motion.

This property controls only user interactions with the map. If you set the value of this property to NO, you may still rotate the map programmatically.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite,
      getter=isRotateEnabled) BOOL rotateEnabled;

Swift

var isRotateEnabled: Bool { get set }

`pitchEnabled`

A Boolean value that determines whether the user may change the pitch (tilt) of the map.

When this property is set to YES, the default, the user may tilt the map by vertically dragging two fingers.

This property controls only user interactions with the map. If you set the value of this property to NO, you may still change the pitch of the map programmatically.

The default value of this property is YES.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite,
      getter=isPitchEnabled) BOOL pitchEnabled;

Swift

var isPitchEnabled: Bool { get set }

`hapticFeedbackEnabled`

A Boolean value that determines whether the user will receive haptic feedback for certain interactions with the map.

When this property is set to YES, the default, a UIImpactFeedbackStyleLight haptic feedback event be played when the user rotates the map to due north (0°).

This feature requires a device that supports haptic feedback, running iOS 10 or newer.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite,
      getter=isHapticFeedbackEnabled) BOOL hapticFeedbackEnabled;

Swift

var isHapticFeedbackEnabled: Bool { get set }

`decelerationRate`

A floating-point value that determines the rate of deceleration after the user lifts their finger.

Your application can use the MGLMapViewDecelerationRateNormal and MGLMapViewDecelerationRateFast constants as reference points for reasonable deceleration rates. MGLMapViewDecelerationRateImmediate can be used to disable deceleration entirely.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
CGFloat decelerationRate;

Swift

var decelerationRate: CGFloat { get set }

Manipulating the Viewpoint

`centerCoordinate`

The geographic coordinate at the center of the map view.

Changing the value of this property centers the map on the new coordinate without changing the current zoom level.

Changing the value of this property updates the map view immediately. If you want to animate the change, use the -setCenterCoordinate:animated: method instead.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
CLLocationCoordinate2D centerCoordinate;

Swift

var centerCoordinate: CLLocationCoordinate2D { get set }

`-setCenterCoordinate:animated:`

Changes the center coordinate of the map and optionally animates the change.

Changing the center coordinate centers the map on the new coordinate without changing the current zoom level. For animated changes, wait until the map view has finished loading before calling this method.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification.

Declaration

Objective-C

- (void)setCenterCoordinate:(CLLocationCoordinate2D)coordinate
               animated:(BOOL)animated;

Swift

func setCenter(_ coordinate: CLLocationCoordinate2D, animated: Bool)

Parameters

coordinate

The new center coordinate for the map.

animated

Specify YES if you want the map view to scroll to the new location or NO if you want the map to display the new location immediately.

`-setCenterCoordinate:zoomLevel:animated:`

Changes the center coordinate and zoom level of the map and optionally animates the change. For animated changes, wait until the map view has finished loading before calling this method.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification.

Declaration

Objective-C

- (void)setCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate
              zoomLevel:(double)zoomLevel
               animated:(BOOL)animated;

Swift

func setCenter(_ centerCoordinate: CLLocationCoordinate2D, zoomLevel: Double, animated: Bool)

Parameters

centerCoordinate

The new center coordinate for the map.

zoomLevel

The new zoom level for the map.

animated

Specify YES if you want the map view to animate scrolling and zooming to the new location or NO if you want the map to display the new location immediately.

`-setCenterCoordinate:zoomLevel:direction:animated:`

Changes the center coordinate, zoom level, and direction of the map and optionally animates the change. For animated changes, wait until the map view has finished loading before calling this method.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification.

Declaration

Objective-C

- (void)setCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate
              zoomLevel:(double)zoomLevel
              direction:(CLLocationDirection)direction
               animated:(BOOL)animated;

Swift

func setCenter(_ centerCoordinate: CLLocationCoordinate2D, zoomLevel: Double, direction: CLLocationDirection, animated: Bool)

Parameters

centerCoordinate

The new center coordinate for the map.

zoomLevel

The new zoom level for the map.

direction

The new direction for the map, measured in degrees relative to true north. A negative value leaves the map’s direction unchanged.

animated

Specify YES if you want the map view to animate scrolling, zooming, and rotating to the new location or NO if you want the map to display the new location immediately.

`-setCenterCoordinate:zoomLevel:direction:animated:completionHandler:`

Changes the center coordinate, zoom level, and direction of the map, calling a completion handler at the end of an optional animation. For animated changes, wait until the map view has finished loading before calling this method.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification.

Declaration

Objective-C

- (void)setCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate
              zoomLevel:(double)zoomLevel
              direction:(CLLocationDirection)direction
               animated:(BOOL)animated
      completionHandler:(nullable void (^)(void))completion;

Swift

func setCenter(_ centerCoordinate: CLLocationCoordinate2D, zoomLevel: Double, direction: CLLocationDirection, animated: Bool, completionHandler completion: (() -> Void)? = nil)

Parameters

centerCoordinate

The new center coordinate for the map.

zoomLevel

The new zoom level for the map.

direction

The new direction for the map, measured in degrees relative to true north. A negative value leaves the map’s direction unchanged.

animated

Specify YES if you want the map view to animate scrolling, zooming, and rotating to the new location or NO if you want the map to display the new location immediately.

completion

The block executed after the animation finishes.

`zoomLevel`

The zoom level of the receiver.

In addition to affecting the visual size and detail of features on the map, the zoom level affects the size of the vector tiles that are loaded. At zoom level 0, each tile covers the entire world map; at zoom level 1, it covers ¼ of the world; at zoom level 2, 1⁄16 of the world, and so on.

Changing the value of this property updates the map view immediately. If you want to animate the change, use the -setZoomLevel:animated: method instead.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite) double zoomLevel;

Swift

var zoomLevel: Double { get set }

`-setZoomLevel:animated:`

Changes the zoom level of the map and optionally animates the change.

Changing the zoom level scales the map without changing the current center coordinate.

Declaration

Objective-C

- (void)setZoomLevel:(double)zoomLevel animated:(BOOL)animated;

Swift

func setZoomLevel(_ zoomLevel: Double, animated: Bool)

Parameters

zoomLevel

The new zoom level for the map.

animated

Specify YES if you want the map view to animate the change to the new zoom level or NO if you want the map to display the new zoom level immediately.

`minimumZoomLevel`

The minimum zoom level at which the map can be shown.

Depending on the map view’s aspect ratio, the map view may be prevented from reaching the minimum zoom level, in order to keep the map from repeating within the current viewport.

If the value of this property is greater than that of the maximumZoomLevel property, the behavior is undefined.

The default minimumZoomLevel is 0.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
double minimumZoomLevel;

Swift

var minimumZoomLevel: Double { get set }

`maximumZoomLevel`

The maximum zoom level the map can be shown at.

If the value of this property is smaller than that of the minimumZoomLevel property, the behavior is undefined.

The default maximumZoomLevel is 22. The upper bound for this property is 25.5.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
double maximumZoomLevel;

Swift

var maximumZoomLevel: Double { get set }

`direction`

The heading of the map, measured in degrees clockwise from true north.

The value 0 means that the top edge of the map view corresponds to true north. The value 90 means the top of the map is pointing due east. The value 180 means the top of the map points due south, and so on.

Changing the value of this property updates the map view immediately. If you want to animate the change, use the -setDirection:animated: method instead.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
CLLocationDirection direction;

Swift

var direction: CLLocationDirection { get set }

`-setDirection:animated:`

Changes the heading of the map and optionally animates the change.

Changing the heading rotates the map without changing the current center coordinate or zoom level.

Declaration

Objective-C

- (void)setDirection:(CLLocationDirection)direction animated:(BOOL)animated;

Swift

func setDirection(_ direction: CLLocationDirection, animated: Bool)

Parameters

direction

The heading of the map, measured in degrees clockwise from true north.

animated

Specify YES if you want the map view to animate the change to the new heading or NO if you want the map to display the new heading immediately.

`minimumPitch`

The minimum pitch of the map’s camera toward the horizon measured in degrees.

If the value of this property is greater than that of the maximumPitch property, the behavior is undefined. The pitch may not be less than 0 regardless of this property.

The default value of this property is 0 degrees, allowing the map to appear two-dimensional.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite) CGFloat minimumPitch;

Swift

var minimumPitch: CGFloat { get set }

`maximumPitch`

The maximum pitch of the map’s camera toward the horizon measured in degrees.

If the value of this property is smaller than that of the minimumPitch property, the behavior is undefined. The pitch may not exceed 60 degrees regardless of this property.

The default value of this property is 60 degrees.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite) CGFloat maximumPitch;

Swift

var maximumPitch: CGFloat { get set }

`-resetNorth`

Resets the map rotation to a northern heading — a direction of 0 degrees.

Declaration

Objective-C

- (void)resetNorth;

Swift

@IBAction func resetNorth()

`-resetPosition`

Resets the map to the current style’s default viewport.

If the style doesn’t specify a default viewport, the map resets to a minimum zoom level, a center coordinate of (0, 0), and a northern heading.

Declaration

Objective-C

- (void)resetPosition;

Swift

@IBAction func resetPosition()

`visibleCoordinateBounds`

The coordinate bounds visible in the receiver’s viewport.

Changing the value of this property updates the receiver immediately. If you want to animate the change, call -setVisibleCoordinateBounds:animated: instead.

If a longitude is less than −180 degrees or greater than 180 degrees, the visible bounds straddles the antimeridian or international date line. For example, if both Tokyo and San Francisco are visible, the visible bounds might extend from (35.68476, −220.24257) to (37.78428, −122.41310).

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLCoordinateBounds visibleCoordinateBounds;

Swift

var visibleCoordinateBounds: MGLCoordinateBounds { get set }

`-setVisibleCoordinateBounds:animated:`

Changes the receiver’s viewport to fit the given coordinate bounds, optionally animating the change.

To bring both sides of the antimeridian or international date line into view, specify some longitudes less than −180 degrees or greater than 180 degrees. For example, to show both Tokyo and San Francisco simultaneously, you could set the visible bounds to extend from (35.68476, −220.24257) to (37.78428, −122.41310).

Declaration

Objective-C

- (void)setVisibleCoordinateBounds:(MGLCoordinateBounds)bounds
                      animated:(BOOL)animated;

Swift

func setVisibleCoordinateBounds(_ bounds: MGLCoordinateBounds, animated: Bool)

Parameters

bounds

The bounds that the viewport will show in its entirety.

animated

Specify YES to animate the change by smoothly scrolling and zooming or NO to immediately display the given bounds.

`-setVisibleCoordinateBounds:edgePadding:animated:`

Deprecated

Use -setVisibleCoordinateBounds:edgePadding:animated:completionHandler: instead.

Deprecated. Changes the receiver’s viewport to fit the given coordinate bounds with some additional padding on each side.

To specify a completion handler to execute after the animation finishes, use the -setVisibleCoordinateBounds:edgePadding:animated:completionHandler: method.

Declaration

Objective-C

- (void)setVisibleCoordinateBounds:(MGLCoordinateBounds)bounds
                   edgePadding:(UIEdgeInsets)insets
                      animated:(BOOL)animated;

Swift

func setVisibleCoordinateBounds(_ bounds: MGLCoordinateBounds, edgePadding insets: UIEdgeInsets, animated: Bool)

Parameters

bounds

The bounds that the viewport will show in its entirety.

insets

The minimum padding (in screen points) that will be visible around the given coordinate bounds.

animated

Specify YES to animate the change by smoothly scrolling and zooming or NO to immediately display the given bounds.

`-setVisibleCoordinateBounds:edgePadding:animated:completionHandler:`

Changes the receiver’s viewport to fit the given coordinate bounds with some additional padding on each side, optionally calling a completion handler.

Declaration

Objective-C

- (void)setVisibleCoordinateBounds:(MGLCoordinateBounds)bounds
                   edgePadding:(UIEdgeInsets)insets
                      animated:(BOOL)animated
             completionHandler:(nullable void (^)(void))completion;

Swift

func setVisibleCoordinateBounds(_ bounds: MGLCoordinateBounds, edgePadding insets: UIEdgeInsets, animated: Bool, completionHandler completion: (() -> Void)? = nil)

Parameters

bounds

The bounds that the viewport will show in its entirety.

insets

The minimum padding (in screen points) that will be visible around the given coordinate bounds.

animated

Specify YES to animate the change by smoothly scrolling and zooming or NO to immediately display the given bounds.

completion

The block executed after the animation finishes.

`-setVisibleCoordinates:count:edgePadding:animated:`

Changes the receiver’s viewport to fit all of the given coordinates with some additional padding on each side.

To bring both sides of the antimeridian or international date line into view, specify some longitudes less than −180 degrees or greater than 180 degrees. For example, to show both Tokyo and San Francisco simultaneously, you could set the visible coordinates to (35.68476, −220.24257) and (37.78428, −122.41310).

Declaration

Objective-C

- (void)setVisibleCoordinates:
        (nonnull const CLLocationCoordinate2D *)coordinates
                    count:(NSUInteger)count
              edgePadding:(UIEdgeInsets)insets
                 animated:(BOOL)animated;

Swift

func setVisibleCoordinates(_ coordinates: UnsafePointer<CLLocationCoordinate2D>, count: UInt, edgePadding insets: UIEdgeInsets, animated: Bool)

Parameters

coordinates

The coordinates that the viewport will show.

count

The number of coordinates. This number must not be greater than the number of elements in coordinates.

insets

The minimum padding (in screen points) that will be visible around the given coordinate bounds.

animated

Specify YES to animate the change by smoothly scrolling and zooming or NO to immediately display the given bounds.

`-setVisibleCoordinates:count:edgePadding:direction:duration:animationTimingFunction:completionHandler:`

Changes the receiver’s viewport to fit all of the given coordinates with some additional padding on each side, optionally calling a completion handler.

To bring both sides of the antimeridian or international date line into view, specify some longitudes less than −180 degrees or greater than 180 degrees. For example, to show both Tokyo and San Francisco simultaneously, you could set the visible coordinates to (35.68476, −220.24257) and (37.78428, −122.41310).

Declaration

Objective-C

- (void)setVisibleCoordinates:
        (nonnull const CLLocationCoordinate2D *)coordinates
                    count:(NSUInteger)count
              edgePadding:(UIEdgeInsets)insets
                direction:(CLLocationDirection)direction
                 duration:(NSTimeInterval)duration
  animationTimingFunction:(nullable CAMediaTimingFunction *)function
        completionHandler:(nullable void (^)(void))completion;

Swift

func setVisibleCoordinates(_ coordinates: UnsafePointer<CLLocationCoordinate2D>, count: UInt, edgePadding insets: UIEdgeInsets, direction: CLLocationDirection, duration: TimeInterval, animationTimingFunction function: CAMediaTimingFunction?, completionHandler completion: (() -> Void)? = nil)

Parameters

coordinates

The coordinates that the viewport will show.

count

The number of coordinates. This number must not be greater than the number of elements in coordinates.

insets

The minimum padding (in screen points) that will be visible around the given coordinate bounds.

direction

The direction to rotate the map to, measured in degrees relative to true north. A negative value leaves the map’s direction unchanged.

duration

The duration to animate the change in seconds.

function

The timing function to animate the change.

completion

The block executed after the animation finishes.

`-showAnnotations:animated:`

Sets the visible region so that the map displays the specified annotations.

Calling this method updates the value in the visibleCoordinateBounds property and potentially other properties to reflect the new map region. A small amount of padding is reserved around the edges of the map view. To specify a different amount of padding, use the -showAnnotations:edgePadding:animated: method.

Declaration

Objective-C

- (void)showAnnotations:(nonnull NSArray<id<MGLAnnotation>> *)annotations
           animated:(BOOL)animated;

Parameters

annotations

The annotations that you want to be visible in the map.

animated

YES if you want the map region change to be animated, or NO if you want the map to display the new region immediately without animations.

`-showAnnotations:edgePadding:animated:`

Deprecated

Use -showAnnotations:edgePadding:animated:completionHandler: instead.

Deprecated. Sets the visible region so that the map displays the specified annotations with the specified amount of padding on each side.

Calling this method updates the value in the visibleCoordinateBounds property and potentially other properties to reflect the new map region.

To specify a completion handler to execute after the animation finishes, use the -showAnnotations:edgePadding:animated:completionHandler: method.

Declaration

Objective-C

- (void)showAnnotations:(nonnull NSArray<id<MGLAnnotation>> *)annotations
        edgePadding:(UIEdgeInsets)insets
           animated:(BOOL)animated;

Parameters

annotations

The annotations that you want to be visible in the map.

insets

The minimum padding (in screen points) around the edges of the map view to keep clear of annotations.

animated

YES if you want the map region change to be animated, or NO if you want the map to display the new region immediately without animations.

`-showAnnotations:edgePadding:animated:completionHandler:`

Sets the visible region so that the map displays the specified annotations with the specified amount of padding on each side and an optional completion handler.

Calling this method updates the value in the visibleCoordinateBounds property and potentially other properties to reflect the new map region.

Declaration

Objective-C

- (void)showAnnotations:(nonnull NSArray<id<MGLAnnotation>> *)annotations
        edgePadding:(UIEdgeInsets)insets
           animated:(BOOL)animated
  completionHandler:(nullable void (^)(void))completion;

Parameters

annotations

The annotations that you want to be visible in the map.

insets

The minimum padding (in screen points) around the edges of the map view to keep clear of annotations.

animated

YES if you want the map region change to be animated, or NO if you want the map to display the new region immediately without animations.

completion

The block executed after the animation finishes.

`camera`

A camera representing the current viewpoint of the map.

Declaration

Objective-C

@property (nonatomic, copy, readwrite) MGLMapCamera *_Nonnull camera;

Swift

@NSCopying var camera: MGLMapCamera { get set }

`-setCamera:animated:`

Moves the viewpoint to a different location with respect to the map with an optional transition animation. For animated changes, wait until the map view has finished loading before calling this method.

Declaration

Objective-C

- (void)setCamera:(nonnull MGLMapCamera *)camera animated:(BOOL)animated;

Swift

func setCamera(_ camera: MGLMapCamera, animated: Bool)

Parameters

camera

The new viewpoint.

animated

Specify YES if you want the map view to animate the change to the new viewpoint or NO if you want the map to display the new viewpoint immediately.

`-setCamera:withDuration:animationTimingFunction:`

Moves the viewpoint to a different location with respect to the map with an optional transition duration and timing function. For animated changes, wait until the map view has finished loading before calling this method.

Declaration

Objective-C

- (void)setCamera:(nonnull MGLMapCamera *)camera
           withDuration:(NSTimeInterval)duration
animationTimingFunction:(nullable CAMediaTimingFunction *)function;

Swift

func setCamera(_ camera: MGLMapCamera, withDuration duration: TimeInterval, animationTimingFunction function: CAMediaTimingFunction?)

Parameters

camera

The new viewpoint.

duration

The amount of time, measured in seconds, that the transition animation should take. Specify 0 to jump to the new viewpoint instantaneously.

function

A timing function used for the animation. Set this parameter to nil for a transition that matches most system animations. If the duration is 0, this parameter is ignored.

`-setCamera:withDuration:animationTimingFunction:completionHandler:`

Declaration

Objective-C

- (void)setCamera:(nonnull MGLMapCamera *)camera
           withDuration:(NSTimeInterval)duration
animationTimingFunction:(nullable CAMediaTimingFunction *)function
      completionHandler:(nullable void (^)(void))completion;

Swift

func setCamera(_ camera: MGLMapCamera, withDuration duration: TimeInterval, animationTimingFunction function: CAMediaTimingFunction?, completionHandler completion: (() -> Void)? = nil)

Parameters

camera

The new viewpoint.

duration

The amount of time, measured in seconds, that the transition animation should take. Specify 0 to jump to the new viewpoint instantaneously.

function

A timing function used for the animation. Set this parameter to nil for a transition that matches most system animations. If the duration is 0, this parameter is ignored.

completion

The block to execute after the animation finishes.

`-setCamera:withDuration:animationTimingFunction:edgePadding:completionHandler:`

Moves the viewpoint to a different location with respect to the map with an optional transition duration and timing function, and optionally some additional padding on each side. For animated changes, wait until the map view has finished loading before calling this method.

Declaration

Objective-C

- (void)setCamera:(nonnull MGLMapCamera *)camera
           withDuration:(NSTimeInterval)duration
animationTimingFunction:(nullable CAMediaTimingFunction *)function
            edgePadding:(UIEdgeInsets)edgePadding
      completionHandler:(nullable void (^)(void))completion;

Swift

func setCamera(_ camera: MGLMapCamera, withDuration duration: TimeInterval, animationTimingFunction function: CAMediaTimingFunction?, edgePadding: UIEdgeInsets, completionHandler completion: (() -> Void)? = nil)

Parameters

camera

The new viewpoint.

duration

The amount of time, measured in seconds, that the transition animation should take. Specify 0 to jump to the new viewpoint instantaneously.

function

A timing function used for the animation. Set this parameter to nil for a transition that matches most system animations. If the duration is 0, this parameter is ignored.

edgePadding

The minimum padding (in screen points) that would be visible around the returned camera object if it were set as the receiver’s camera.

completion

The block to execute after the animation finishes.

`-flyToCamera:completionHandler:`

Moves the viewpoint to a different location using a transition animation that evokes powered flight and a default duration based on the length of the flight path.

The transition animation seamlessly incorporates zooming and panning to help the user find his or her bearings even after traversing a great distance.

Declaration

Objective-C

- (void)flyToCamera:(nonnull MGLMapCamera *)camera
completionHandler:(nullable void (^)(void))completion;

Swift

func fly(to camera: MGLMapCamera, completionHandler completion: (() -> Void)? = nil)

Parameters

camera

The new viewpoint.

completion

The block to execute after the animation finishes.

`-flyToCamera:withDuration:completionHandler:`

Moves the viewpoint to a different location using a transition animation that evokes powered flight and an optional transition duration.

The transition animation seamlessly incorporates zooming and panning to help the user find his or her bearings even after traversing a great distance.

Declaration

Objective-C

- (void)flyToCamera:(nonnull MGLMapCamera *)camera
     withDuration:(NSTimeInterval)duration
completionHandler:(nullable void (^)(void))completion;

Swift

func fly(to camera: MGLMapCamera, withDuration duration: TimeInterval, completionHandler completion: (() -> Void)? = nil)

Parameters

camera

The new viewpoint.

duration

The amount of time, measured in seconds, that the transition animation should take. Specify 0 to jump to the new viewpoint instantaneously. Specify a negative value to use the default duration, which is based on the length of the flight path.

completion

The block to execute after the animation finishes.

`-flyToCamera:withDuration:peakAltitude:completionHandler:`

Moves the viewpoint to a different location using a transition animation that evokes powered flight and an optional transition duration and peak altitude.

The transition animation seamlessly incorporates zooming and panning to help the user find his or her bearings even after traversing a great distance.

Declaration

Objective-C

- (void)flyToCamera:(nonnull MGLMapCamera *)camera
     withDuration:(NSTimeInterval)duration
     peakAltitude:(CLLocationDistance)peakAltitude
completionHandler:(nullable void (^)(void))completion;

Swift

func fly(to camera: MGLMapCamera, withDuration duration: TimeInterval, peakAltitude: CLLocationDistance, completionHandler completion: (() -> Void)? = nil)

Parameters

camera

The new viewpoint.

duration

peakAltitude

The altitude, measured in meters, at the midpoint of the animation. The value of this parameter is ignored if it is negative or if the animation transition resulting from a similar call to -setCamera:animated: would have a midpoint at a higher altitude.

completion

The block to execute after the animation finishes.

`-cameraThatFitsCoordinateBounds:`

Returns the camera that best fits the given coordinate bounds.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification; you may receive a nil return value depending on the order of notification delivery.

Declaration

Objective-C

- (nonnull MGLMapCamera *)cameraThatFitsCoordinateBounds:
(MGLCoordinateBounds)bounds;

Swift

func cameraThatFitsCoordinateBounds(_ bounds: MGLCoordinateBounds) -> MGLMapCamera

Parameters

bounds

The coordinate bounds to fit to the receiver’s viewport.

Return Value

A camera object centered on the same location as the coordinate bounds with zoom level as high (close to the ground) as possible while still including the entire coordinate bounds. The camera object uses the current direction and pitch.

`-cameraThatFitsCoordinateBounds:edgePadding:`

Returns the camera that best fits the given coordinate bounds with some additional padding on each side.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification; you may receive a nil return value depending on the order of notification delivery.

Declaration

Objective-C

- (nonnull MGLMapCamera *)cameraThatFitsCoordinateBounds:
                          (MGLCoordinateBounds)bounds
                                         edgePadding:(UIEdgeInsets)insets;

Swift

func cameraThatFitsCoordinateBounds(_ bounds: MGLCoordinateBounds, edgePadding insets: UIEdgeInsets) -> MGLMapCamera

Parameters

bounds

The coordinate bounds to fit to the receiver’s viewport.

insets

The minimum padding (in screen points) that would be visible around the returned camera object if it were set as the receiver’s camera.

Return Value

`-camera:fittingCoordinateBounds:edgePadding:`

Returns the camera that best fits the given coordinate bounds with some additional padding on each side, matching an existing camera as much as possible.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification; you may receive a nil return value depending on the order of notification delivery.

Declaration

Objective-C

- (nonnull MGLMapCamera *)camera:(nonnull MGLMapCamera *)camera
     fittingCoordinateBounds:(MGLCoordinateBounds)bounds
                 edgePadding:(UIEdgeInsets)insets;

Swift

func camera(_ camera: MGLMapCamera, fitting bounds: MGLCoordinateBounds, edgePadding insets: UIEdgeInsets) -> MGLMapCamera

Parameters

camera

The camera that the return camera should adhere to. All values on this camera will be manipulated except for pitch and direction.

bounds

The coordinate bounds to fit to the receiver’s viewport.

insets

The minimum padding (in screen points) that would be visible around the returned camera object if it were set as the receiver’s camera.

Return Value

A camera object centered on the same location as the coordinate bounds with zoom level as high (close to the ground) as possible while still including the entire coordinate bounds. The initial camera’s pitch and direction will be honored.

`-camera:fittingShape:edgePadding:`

Returns the camera that best fits the given shape with some additional padding on each side, matching an existing camera as much as possible.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification; you may receive a nil return value depending on the order of notification delivery.

Declaration

Objective-C

- (nonnull MGLMapCamera *)camera:(nonnull MGLMapCamera *)camera
                fittingShape:(nonnull MGLShape *)shape
                 edgePadding:(UIEdgeInsets)insets;

Swift

func camera(_ camera: MGLMapCamera, fitting shape: MGLShape, edgePadding insets: UIEdgeInsets) -> MGLMapCamera

Parameters

camera

The camera that the return camera should adhere to. All values on this camera will be manipulated except for pitch and direction.

shape

The shape to fit to the receiver’s viewport.

insets

The minimum padding (in screen points) that would be visible around the returned camera object if it were set as the receiver’s camera.

Return Value

A camera object centered on the shape’s center with zoom level as high (close to the ground) as possible while still including the entire shape. The initial camera’s pitch and direction will be honored.

`-cameraThatFitsShape:direction:edgePadding:`

Returns the camera that best fits the given shape with some additional padding on each side while looking in the specified direction.

Note

The behavior of this method is undefined if called in response to UIApplicationWillTerminateNotification; you may receive a nil return value depending on the order of notification delivery.

Declaration

Objective-C

- (nonnull MGLMapCamera *)cameraThatFitsShape:(nonnull MGLShape *)shape
                                direction:(CLLocationDirection)direction
                              edgePadding:(UIEdgeInsets)insets;

Swift

func cameraThatFitsShape(_ shape: MGLShape, direction: CLLocationDirection, edgePadding insets: UIEdgeInsets) -> MGLMapCamera

Parameters

shape

The shape to fit to the receiver’s viewport.

direction

The direction of the viewport, measured in degrees clockwise from true north.

insets

The minimum padding (in screen points) that would be visible around the returned camera object if it were set as the receiver’s camera.

Return Value

A camera object centered on the shape’s center with zoom level as high (close to the ground) as possible while still including the entire shape. The camera object uses the current pitch.

`-anchorPointForGesture:`

Returns the point in this view’s coordinate system on which to “anchor” in response to a user-initiated gesture.

For example, a pinch-to-zoom gesture would anchor the map at the midpoint of the pinch.

If the userTrackingMode property is not MGLUserTrackingModeNone, the user annotation is used as the anchor point.

Subclasses may override this method to provide specialized behavior - for example, anchoring on the map’s center point to provide a locked zooming mode.

Declaration

Objective-C

- (CGPoint)anchorPointForGesture:(nonnull UIGestureRecognizer *)gesture;

Swift

func anchorPoint(forGesture gesture: UIGestureRecognizer) -> CGPoint

Parameters

gesture

An anchorable user gesture.

Return Value

The point on which to anchor in response to the gesture.

`contentInset`

The distance from the edges of the map view’s frame to the edges of the map view’s logical viewport.

When the value of this property is equal to UIEdgeInsetsZero, viewport properties such as centerCoordinate assume a viewport that matches the map view’s frame. Otherwise, those properties are inset, excluding part of the frame from the viewport. For instance, if the only the top edge is inset, the map center is effectively shifted downward.

When the map view’s superview is an instance of UIViewController whose automaticallyAdjustsScrollViewInsets property is YES, the value of this property may be overridden at any time.

The usage of automaticallyAdjustsScrollViewInsets has been deprecated use the map view’s property MGLMapView.automaticallyAdjustsContentInsetinstead.

Changing the value of this property updates the map view immediately. If you want to animate the change, use the -setContentInset:animated:completionHandler: method instead.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
UIEdgeInsets contentInset;

Swift

var contentInset: UIEdgeInsets { get set }

`-setContentInset:animated:`

Deprecated

Use -setContentInset:animated:completionHandler: instead.

Deprecated. Sets the distance from the edges of the map view’s frame to the edges of the map view’s logical viewport with an optional transition animation.

When the map view’s superview is an instance of UIViewController whose automaticallyAdjustsScrollViewInsets property is YES, the value of this property may be overridden at any time.

The usage of automaticallyAdjustsScrollViewInsets has been deprecated use the map view’s property MGLMapView.automaticallyAdjustsContentInsetinstead.

To specify a completion handler to execute after the animation finishes, use the -setContentInset:animated:completionHandler: method.

Declaration

Objective-C

- (void)setContentInset:(UIEdgeInsets)contentInset animated:(BOOL)animated;

Swift

func setContentInset(_ contentInset: UIEdgeInsets, animated: Bool)

Parameters

contentInset

The new values to inset the content by.

animated

Specify YES if you want the map view to animate the change to the content inset or NO if you want the map to inset the content immediately.

`-setContentInset:animated:completionHandler:`

Sets the distance from the edges of the map view’s frame to the edges of the map view’s logical viewport with an optional transition animation and completion handler.

When the map view’s superview is an instance of UIViewController whose automaticallyAdjustsScrollViewInsets property is YES, the value of this property may be overridden at any time.

The usage of automaticallyAdjustsScrollViewInsets has been deprecated use the map view’s property MGLMapView.automaticallyAdjustsContentInsetinstead.

Declaration

Objective-C

- (void)setContentInset:(UIEdgeInsets)contentInset
           animated:(BOOL)animated
  completionHandler:(nullable void (^)(void))completion;

Swift

func setContentInset(_ contentInset: UIEdgeInsets, animated: Bool, completionHandler completion: (() -> Void)? = nil)

Parameters

contentInset

The new values to inset the content by.

animated

Specify YES if you want the map view to animate the change to the content inset or NO if you want the map to inset the content immediately.

completion

The block executed after the animation finishes.

Converting Geographic Coordinates

`-convertPoint:toCoordinateFromView:`

Converts a point in the given view’s coordinate system to a geographic coordinate.

Declaration

Objective-C

- (CLLocationCoordinate2D)convertPoint:(CGPoint)point
              toCoordinateFromView:(nullable UIView *)view;

Swift

func convert(_ point: CGPoint, toCoordinateFrom view: UIView?) -> CLLocationCoordinate2D

Parameters

point

The point to convert.

view

The view in whose coordinate system the point is expressed.

Return Value

The geographic coordinate at the given point.

`-convertCoordinate:toPointToView:`

Converts a geographic coordinate to a point in the given view’s coordinate system.

Declaration

Objective-C

- (CGPoint)convertCoordinate:(CLLocationCoordinate2D)coordinate
           toPointToView:(nullable UIView *)view;

Swift

func convert(_ coordinate: CLLocationCoordinate2D, toPointTo view: UIView?) -> CGPoint

Parameters

coordinate

The geographic coordinate to convert.

view

The view in whose coordinate system the returned point should be expressed. If this parameter is nil, the returned point is expressed in the window’s coordinate system. If view is not nil, it must belong to the same window as the map view.

Return Value

The point (in the appropriate view or window coordinate system) corresponding to the given geographic coordinate.

`-convertRect:toCoordinateBoundsFromView:`

Converts a rectangle in the given view’s coordinate system to a geographic bounding box.

If the returned coordinate bounds contains a longitude is less than −180 degrees or greater than 180 degrees, the bounding box straddles the antimeridian or international date line.

Declaration

Objective-C

- (MGLCoordinateBounds)convertRect:(CGRect)rect
    toCoordinateBoundsFromView:(nullable UIView *)view;

Swift

func convert(_ rect: CGRect, toCoordinateBoundsFrom view: UIView?) -> MGLCoordinateBounds

Parameters

rect

The rectangle to convert.

view

The view in whose coordinate system the rectangle is expressed.

Return Value

The geographic bounding box coextensive with the given rectangle.

`-convertCoordinateBounds:toRectToView:`

Converts a geographic bounding box to a rectangle in the given view’s coordinate system.

Declaration

Objective-C

- (CGRect)convertCoordinateBounds:(MGLCoordinateBounds)bounds
                 toRectToView:(nullable UIView *)view;

Swift

func convert(_ bounds: MGLCoordinateBounds, toRectTo view: UIView?) -> CGRect

Parameters

bounds

The geographic bounding box to convert.

view

The view in whose coordinate system the returned rectangle should be expressed. If this parameter is nil, the returned rectangle is expressed in the window’s coordinate system. If view is not nil, it must belong to the same window as the map view.

`-metersPerPointAtLatitude:`

Returns the distance spanned by one point in the map view’s coordinate system at the given latitude and current zoom level.

The distance between points decreases as the latitude approaches the poles. This relationship parallels the relationship between longitudinal coordinates at different latitudes.

Declaration

Objective-C

- (CLLocationDistance)metersPerPointAtLatitude:(CLLocationDegrees)latitude;

Swift

func metersPerPoint(atLatitude latitude: CLLocationDegrees) -> CLLocationDistance

Parameters

latitude

The latitude of the geographic coordinate represented by the point.

Return Value

The distance in meters spanned by a single point.

Annotating the Map

`annotations`

The complete list of annotations associated with the receiver. (read-only)

The objects in this array must adopt the MGLAnnotation protocol. If no annotations are associated with the map view, the value of this property is nil.

Declaration

Objective-C

@property (nonatomic, readonly, nullable)
NSArray<id<MGLAnnotation>> *annotations;

`-addAnnotation:`

Adds an annotation to the map view.

Note

MGLMultiPolyline, MGLMultiPolygon, MGLShapeCollection, and MGLPointCollection objects cannot be added to the map view at this time. Any multipoint, multipolyline, multipolygon, shape or point collection object that is specified is silently ignored.

Declaration

Objective-C

- (void)addAnnotation:(nonnull id<MGLAnnotation>)annotation;

Parameters

annotation

The annotation object to add to the receiver. This object must conform to the MGLAnnotation protocol. The map view retains the annotation object.

`-addAnnotations:`

Adds an array of annotations to the map view.

Note

MGLMultiPolyline, MGLMultiPolygon, and MGLShapeCollection objects cannot be added to the map view at this time. Nor can MGLMultiPoint objects that are not instances of MGLPolyline or MGLPolygon. Any multipoint, multipolyline, multipolygon, or shape collection objects that are specified are silently ignored.

Declaration

Objective-C

- (void)addAnnotations:(nonnull NSArray<id<MGLAnnotation>> *)annotations;

Parameters

annotations

An array of annotation objects. Each object in the array must conform to the MGLAnnotation protocol. The map view retains each individual annotation object.

`-removeAnnotation:`

Removes an annotation from the map view, deselecting it if it is selected.

Removing an annotation object dissociates it from the map view entirely, preventing it from being displayed on the map. Thus you would typically call this method only when you want to hide or delete a given annotation.

Declaration

Objective-C

- (void)removeAnnotation:(nonnull id<MGLAnnotation>)annotation;

Parameters

annotation

The annotation object to remove. This object must conform to the MGLAnnotation protocol

`-removeAnnotations:`

Removes an array of annotations from the map view, deselecting any selected annotations in the array.

Removing annotation objects dissociates them from the map view entirely, preventing them from being displayed on the map. Thus you would typically call this method only when you want to hide or delete the given annotations.

Declaration

Objective-C

- (void)removeAnnotations:(nonnull NSArray<id<MGLAnnotation>> *)annotations;

Parameters

annotations

The array of annotation objects to remove. Objects in the array must conform to the MGLAnnotation protocol.

`-viewForAnnotation:`

Returns an MGLAnnotationView if the given annotation is currently associated with a view, otherwise nil.

Declaration

Objective-C

- (nullable MGLAnnotationView *)viewForAnnotation:
(nonnull id<MGLAnnotation>)annotation;

Parameters

annotation

The annotation associated with the view. Annotation must conform to the MGLAnnotation protocol.

`-dequeueReusableAnnotationImageWithIdentifier:`

Returns a reusable annotation image object associated with its identifier.

For performance reasons, you should generally reuse MGLAnnotationImage objects for identical-looking annotations in your map views. Dequeueing saves time and memory during performance-critical operations such as scrolling.

Declaration

Objective-C

- (nullable __kindof MGLAnnotationImage *)
dequeueReusableAnnotationImageWithIdentifier:(nonnull NSString *)identifier;

Swift

func dequeueReusableAnnotationImage(withIdentifier identifier: String) -> MGLAnnotationImage?

Parameters

identifier

A string identifying the annotation image to be reused. This string is the same one you specify when initially returning the annotation image object using the -mapView:imageForAnnotation: method.

Return Value

An annotation image object with the given identifier, or nil if no such object exists in the reuse queue.

`-dequeueReusableAnnotationViewWithIdentifier:`

Returns a reusable annotation view object associated with its identifier.

For performance reasons, you should generally reuse MGLAnnotationView objects for identical-looking annotations in your map views. Dequeueing saves time and memory during performance-critical operations such as scrolling.

Declaration

Objective-C

- (nullable __kindof MGLAnnotationView *)
dequeueReusableAnnotationViewWithIdentifier:(nonnull NSString *)identifier;

Swift

func dequeueReusableAnnotationView(withIdentifier identifier: String) -> MGLAnnotationView?

Parameters

identifier

A string identifying the annotation view to be reused. This string is the same one you specify when initially returning the annotation view object using the -mapView:viewForAnnotation: method.

Return Value

An annotation view object with the given identifier, or nil if no such object exists in the reuse queue.

`visibleAnnotations`

The complete list of annotations associated with the receiver that are currently visible.

The objects in this array must adopt the MGLAnnotation protocol. If no annotations are associated with the map view or if no annotations associated with the map view are currently visible, the value of this property is nil.

Declaration

Objective-C

@property (nonatomic, readonly, nullable)
NSArray<id<MGLAnnotation>> *visibleAnnotations;

`-visibleAnnotationsInRect:`

Returns the list of annotations associated with the receiver that intersect with the given rectangle.

Declaration

Objective-C

- (nullable NSArray<id<MGLAnnotation>> *)visibleAnnotationsInRect:(CGRect)rect;

Parameters

rect

A rectangle expressed in the map view’s coordinate system.

Return Value

An array of objects that adopt the MGLAnnotation protocol or nil if no annotations associated with the map view are currently visible in the rectangle.

Managing Annotation Selections

`selectedAnnotations`

The currently selected annotations.

Assigning a new array to this property selects only the first annotation in the array.

If the annotation is of type MGLPointAnnotation and is offscreen, the camera will animate to bring the annotation and its callout just on screen. If you need finer control, consider using -selectAnnotation:animated:.

Note

In versions prior to 4.0.0 if the annotation was offscreen it was not selected.

Declaration

Objective-C

@property (nonatomic, copy, readwrite)
NSArray<id<MGLAnnotation>> *_Nonnull selectedAnnotations;

`-selectAnnotation:animated:`

Deprecated

Use -selectAnnotation:animated:completionHandler: instead.

Deprecated. Selects an annotation and displays its callout view.

The animated parameter determines whether the selection is animated including whether the map is panned to bring the annotation into view, specifically:

animated parameter

Effect

NO

The annotation is selected, and the callout is presented. However the map is not panned to bring the annotation or callout into view. The presentation of the callout is NOT animated.

YES

The annotation is selected, and the callout is presented. If the annotation is not visible (or is partially visible) and is of type MGLPointAnnotation, the map is panned so that the annotation and its callout are brought into view. The annotation is not centered within the viewport.

Note that a selection initiated by a single tap gesture is always animated.

To specify a completion handler to execute after the animation finishes, use the -selectAnnotation:animated:completionHandler: method.

Note

In versions prior to 4.0.0 selecting an offscreen annotation did not change the camera.

Declaration

Objective-C

- (void)selectAnnotation:(nonnull id<MGLAnnotation>)annotation
            animated:(BOOL)animated;

Parameters

annotation

The annotation object to select.

animated

If YES, the annotation and callout view are animated on-screen.

`-selectAnnotation:animated:completionHandler:`

Selects an annotation and displays its callout view with an optional completion handler.

The animated parameter determines whether the selection is animated including whether the map is panned to bring the annotation into view, specifically:

animated parameter

Effect

NO

The annotation is selected, and the callout is presented. However the map is not panned to bring the annotation or callout into view. The presentation of the callout is NOT animated.

YES

Note that a selection initiated by a single tap gesture is always animated.

Note

In versions prior to 4.0.0 selecting an offscreen annotation did not change the camera.

Declaration

Objective-C

- (void)selectAnnotation:(nonnull id<MGLAnnotation>)annotation
            animated:(BOOL)animated
   completionHandler:(nullable void (^)(void))completion;

Parameters

annotation

The annotation object to select.

animated

If YES, the annotation and callout view are animated on-screen.

completion

The block executed after the animation finishes.

`-deselectAnnotation:animated:`

Deselects an annotation and hides its callout view.

Declaration

Objective-C

- (void)deselectAnnotation:(nullable id<MGLAnnotation>)annotation
              animated:(BOOL)animated;

Parameters

annotation

The annotation object to deselect.

animated

If YES, the callout view is animated offscreen.

Overlaying the Map

`overlays`

The complete list of overlays associated with the receiver. (read-only)

The objects in this array must adopt the MGLOverlay protocol. If no overlays are associated with the map view, the value of this property is empty array.

Declaration

Objective-C

@property (nonatomic, readonly, nonnull) NSArray<id<MGLOverlay>> *overlays;

`-addOverlay:`

Adds a single overlay object to the map.

To remove an overlay from a map, use the -removeOverlay: method.

Declaration

Objective-C

- (void)addOverlay:(nonnull id<MGLOverlay>)overlay;

Parameters

overlay

The overlay object to add. This object must conform to the MGLOverlay protocol.

`-addOverlays:`

Adds an array of overlay objects to the map.

To remove multiple overlays from a map, use the -removeOverlays: method.

Declaration

Objective-C

- (void)addOverlays:(nonnull NSArray<id<MGLOverlay>> *)overlays;

Parameters

overlays

An array of objects, each of which must conform to the MGLOverlay protocol.

`-removeOverlay:`

Removes a single overlay object from the map.

If the specified overlay is not currently associated with the map view, this method does nothing.

Declaration

Objective-C

- (void)removeOverlay:(nonnull id<MGLOverlay>)overlay;

Parameters

overlay

The overlay object to remove.

`-removeOverlays:`

Removes one or more overlay objects from the map.

If a given overlay object is not associated with the map view, it is ignored.

Declaration

Objective-C

- (void)removeOverlays:(nonnull NSArray<id<MGLOverlay>> *)overlays;

Parameters

overlays

An array of objects, each of which conforms to the MGLOverlay protocol.

Accessing the Underlying Map Data

`-visibleFeaturesAtPoint:`

Returns an array of rendered map features that intersect with a given point.

This method may return features from any of the map’s style layers. To restrict the search to a particular layer or layers, use the -visibleFeaturesAtPoint:inStyleLayersWithIdentifiers: method. For more information about searching for map features, see that method’s documentation.

Declaration

Objective-C

- (nonnull NSArray<id<MGLFeature>> *)visibleFeaturesAtPoint:(CGPoint)point;

Parameters

point

A point expressed in the map view’s coordinate system.

Return Value

An array of objects conforming to the MGLFeature protocol that represent features in the sources used by the current style.

`-visibleFeaturesAtPoint:inStyleLayersWithIdentifiers:`

Returns an array of rendered map features that intersect with a given point, restricted to the given style layers.

This method returns all the intersecting features from the specified layers. To filter the returned features, use the -visibleFeaturesAtPoint:inStyleLayersWithIdentifiers:predicate: method. For more information about searching for map features, see that method’s documentation.

Declaration

Objective-C

- (nonnull NSArray<id<MGLFeature>> *)visibleFeaturesAtPoint:(CGPoint)point
                           inStyleLayersWithIdentifiers:
                               (nullable NSSet<NSString *> *)
                                   styleLayerIdentifiers;

Parameters

point

A point expressed in the map view’s coordinate system.

styleLayerIdentifiers

A set of strings that correspond to the names of layers defined in the current style. Only the features contained in these layers are included in the returned array.

Return Value

An array of objects conforming to the MGLFeature protocol that represent features in the sources used by the current style.

`-visibleFeaturesAtPoint:inStyleLayersWithIdentifiers:predicate:`

Returns an array of rendered map features that intersect with a given point, restricted to the given style layers and filtered by the given predicate.

Each object in the returned array represents a feature rendered by the current style and provides access to attributes specified by the relevant map content sources. The returned array includes features loaded by MGLShapeSource and MGLVectorTileSource objects but does not include anything from MGLRasterTileSource objects, or from video or canvas sources, which are unsupported by this SDK.

The returned features are drawn by a style layer in the current style. For example, suppose the current style uses the MapTiler Streets source, but none of the specified style layers includes features that have the maki property set to bus. If you pass a point corresponding to the location of a bus stop into this method, the bus stop feature does not appear in the resulting array. On the other hand, if the style does include bus stops, an MGLFeature object representing that bus stop is returned and its featureAttributes dictionary has the maki key set to bus (along with other attributes). The dictionary contains only the attributes provided by the tile source; it does not include computed attribute values or rules about how the feature is rendered by the current style.

The returned array is sorted by z-order, starting with the topmost rendered feature and ending with the bottommost rendered feature. A feature that is rendered multiple times due to wrapping across the antimeridian at low zoom levels is included only once, subject to the caveat that follows.

Features come from tiled vector data or GeoJSON data that is converted to tiles internally, so feature geometries are clipped at tile boundaries and features may appear duplicated across tiles. For example, suppose the specified point lies along a road that spans the screen. The resulting array includes those parts of the road that lie within the map tile that contain the specified point, even if the road extends into other tiles.

To find out the layer names in a particular style, view the style in MapTiler Customize.

Only visible features are returned. To obtain features regardless of visibility, use the -[MGLVectorTileSource featuresInSourceLayersWithIdentifiers:predicate:] and -[MGLShapeSource featuresMatchingPredicate:] methods on the relevant sources.

The returned features may also include features corresponding to annotations. These features are not object-equal to the MGLAnnotation objects that were originally added to the map. To query the map for annotations, use visibleAnnotations or -[MGLMapView visibleAnnotationsInRect:].

Note

Layer identifiers are not guaranteed to exist across styles or different versions of the same style. Applications that use this API must first set the style URL to an explicitly versioned style using a convenience method like +[MGLStyle outdoorsStyleURLWithVersion:], MGLMapView’s “Style URL” inspectable in Interface Builder, or a manually constructed NSURL. This approach also avoids layer identifer name changes that will occur in the default style’s layers over time.

Declaration

Objective-C

- (nonnull NSArray<id<MGLFeature>> *)
      visibleFeaturesAtPoint:(CGPoint)point
inStyleLayersWithIdentifiers:
    (nullable NSSet<NSString *> *)styleLayerIdentifiers
                   predicate:(nullable NSPredicate *)predicate;

Parameters

point

A point expressed in the map view’s coordinate system.

styleLayerIdentifiers

A set of strings that correspond to the names of layers defined in the current style. Only the features contained in these layers are included in the returned array.

predicate

A predicate to filter the returned features.

Return Value

An array of objects conforming to the MGLFeature protocol that represent features in the sources used by the current style.

`-visibleFeaturesInRect:`

Returns an array of rendered map features that intersect with the given rectangle.

Declaration

Objective-C

- (nonnull NSArray<id<MGLFeature>> *)visibleFeaturesInRect:(CGRect)rect;

Parameters

rect

A rectangle expressed in the map view’s coordinate system.

Return Value

An array of objects conforming to the MGLFeature protocol that represent features in the sources used by the current style.

`-visibleFeaturesInRect:inStyleLayersWithIdentifiers:`

Returns an array of rendered map features that intersect with the given rectangle, restricted to the given style layers.

Declaration

Objective-C

- (nonnull NSArray<id<MGLFeature>> *)visibleFeaturesInRect:(CGRect)rect
                          inStyleLayersWithIdentifiers:
                              (nullable NSSet<NSString *> *)
                                  styleLayerIdentifiers;

Parameters

rect

A rectangle expressed in the map view’s coordinate system.

styleLayerIdentifiers

A set of strings that correspond to the names of layers defined in the current style. Only the features contained in these layers are included in the returned array.

Return Value

An array of objects conforming to the MGLFeature protocol that represent features in the sources used by the current style.

`-visibleFeaturesInRect:inStyleLayersWithIdentifiers:predicate:`

Returns an array of rendered map features that intersect with the given rectangle, restricted to the given style layers and filtered by the given predicate.

The returned features are drawn by a style layer in the current style. For example, suppose the current style uses the MapTiler Streets source, but none of the specified style layers includes features that have the maki property set to bus. If you pass a rectangle containing the location of a bus stop into this method, the bus stop feature does not appear in the resulting array. On the other hand, if the style does include bus stops, an MGLFeature object representing that bus stop is returned and its featureAttributes dictionary has the maki key set to bus (along with other attributes). The dictionary contains only the attributes provided by the tile source; it does not include computed attribute values or rules about how the feature is rendered by the current style.

Features come from tiled vector data or GeoJSON data that is converted to tiles internally, so feature geometries are clipped at tile boundaries and features may appear duplicated across tiles. For example, suppose the specified rectangle intersects with a road that spans the screen. The resulting array includes those parts of the road that lie within the map tiles covering the specified rectangle, even if the road extends into other tiles. The portion of the road within each map tile is included individually.

To find out the layer names in a particular style, view the style in MapTiler Customize.

Note

Declaration

Objective-C

- (nonnull NSArray<id<MGLFeature>> *)
       visibleFeaturesInRect:(CGRect)rect
inStyleLayersWithIdentifiers:
    (nullable NSSet<NSString *> *)styleLayerIdentifiers
                   predicate:(nullable NSPredicate *)predicate;

Parameters

rect

A rectangle expressed in the map view’s coordinate system.

styleLayerIdentifiers

A set of strings that correspond to the names of layers defined in the current style. Only the features contained in these layers are included in the returned array.

predicate

A predicate to filter the returned features.

Return Value

An array of objects conforming to the MGLFeature protocol that represent features in the sources used by the current style.

Debugging the Map

`debugMask`

The options that determine which debugging aids are shown on the map.

These options are all disabled by default and should remain disabled in released software for performance and aesthetic reasons.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
MGLMapDebugMaskOptions debugMask;

Swift

var debugMask: MGLMapDebugMaskOptions { get set }

iOS SDK

Examples

SDK JS Reference

On this page

MapTiler Cloud

MapTiler

MGLMapView

Creating Instances

-initWithFrame:

Declaration

Parameters

Return Value

-initWithFrame:styleURL:

Declaration

Parameters

Return Value

Accessing the Delegate

delegate

Declaration

Configuring the Map’s Appearance

style

Declaration

styleURL

Declaration

-reloadStyle:

Declaration

automaticallyAdjustsContentInset

Declaration

showsScale

Declaration

scaleBar

Declaration

scaleBarPosition

Declaration

scaleBarMargins

Declaration

compassView

Declaration

compassViewPosition

Declaration

compassViewMargins

Declaration

logoView

Declaration

logoViewPosition

Declaration

logoViewMargins

Declaration

attributionButton

Declaration

attributionButtonPosition

Declaration

attributionButtonMargins

Declaration

-showAttribution:

Declaration

preferredFramesPerSecond

Declaration

prefetchesTiles

Declaration

Displaying the User’s Location

locationManager

Declaration

showsUserLocation

Declaration

userLocationVisible

Declaration

userLocation

Declaration

userTrackingMode

Declaration

-setUserTrackingMode:animated:

Declaration

Parameters

-setUserTrackingMode:animated:completionHandler:

Declaration

Parameters

userLocationVerticalAlignment

Declaration

-setUserLocationVerticalAlignment:animated:

Declaration

Parameters

-updateUserLocationAnnotationView

Declaration

`-initWithFrame:`

`-initWithFrame:styleURL:`

`delegate`

`style`

`styleURL`

`-reloadStyle:`

`automaticallyAdjustsContentInset`

`showsScale`

`scaleBar`

`scaleBarPosition`

`scaleBarMargins`

`compassView`

`compassViewPosition`

`compassViewMargins`

`logoView`

`logoViewPosition`

`logoViewMargins`

`attributionButton`

`attributionButtonPosition`

`attributionButtonMargins`

`-showAttribution:`

`preferredFramesPerSecond`

`prefetchesTiles`

`locationManager`

`showsUserLocation`

`userLocationVisible`

`userLocation`

`userTrackingMode`

`-setUserTrackingMode:animated:`

`-setUserTrackingMode:animated:completionHandler:`

`userLocationVerticalAlignment`

`-setUserLocationVerticalAlignment:animated:`

`-updateUserLocationAnnotationView`

`-updateUserLocationAnnotationViewAnimatedWithDuration:`

`showsUserHeadingIndicator`

`displayHeadingCalibration`

`targetCoordinate`

`-setTargetCoordinate:animated:`

`-setTargetCoordinate:animated:completionHandler:`

`zoomEnabled`

`scrollEnabled`

`panScrollingMode`

`rotateEnabled`

`pitchEnabled`

`hapticFeedbackEnabled`

`decelerationRate`

`centerCoordinate`

`-setCenterCoordinate:animated:`

`-setCenterCoordinate:zoomLevel:animated:`

`-setCenterCoordinate:zoomLevel:direction:animated:`

`-setCenterCoordinate:zoomLevel:direction:animated:completionHandler:`

`zoomLevel`

`-setZoomLevel:animated:`

`minimumZoomLevel`

`maximumZoomLevel`

`direction`

`-setDirection:animated:`

`minimumPitch`

`maximumPitch`

`-resetNorth`