We have to draw polygons inside a MKMapView based on coordinates retrieved from external source. It seems that MapKit does not behave correctly where polygons have single-vertex self-intersection. Here it's a simple point list example (every element is a pair of latitude and longitude values): [(0, 0), (20, 0), (10, 10), (20, 20), (0, 20), (10, 10), (0, 0)] The next image shows the rendering issue. But if the list is slightly changed in this way [(0, 0), (20, 0), (10, 10), (20, 20), (0, 20), (15, 10), (0, 0)] the issue disappears. The next image shows it. So it's not a self-intersection and self-tangency problem, but we think single-vertex self-intersection is a buggy edge case for MapKit. Right now we fixed this problem by finding the duplicated coordinates and applying a small offset (1e-8) to one of them, but it's a temporary solution and adds rendering delay. The problem is not due to iOS versions, since iOS 17 and 18 have the same issue. Also it happens on simulators and real devices. Here is the playground example, based mostly on the "Map Playground" template Xcode offers. If you run it without modifying it, the playground shows the "bugged" polygon. If you use notBugPoints instead of the default bugPoints for the polygon, the playground shows the "not-bugged" polygon. import MapKit import PlaygroundSupport // Create an MKMapViewDelegate to provide a renderer for our overlay class MapViewDelegate: NSObject, MKMapViewDelegate { func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer { if let overlay = overlay as? MKPolygon { let polygonRenderer = MKPolygonRenderer(overlay: overlay) polygonRenderer.fillColor = .red return polygonRenderer } return MKOverlayRenderer(overlay: overlay) } } // Create a strong reference to a delegate let delegate = MapViewDelegate() // Create an MKMapView let mapView = MKMapView(frame: CGRect(x: 0, y: 0, width: 800, height: 800)) mapView.delegate = delegate // Configure The Map elevation and emphasis style let configuration = MKStandardMapConfiguration(elevationStyle: .realistic, emphasisStyle: .default) mapView.preferredConfiguration = configuration // Create an overlay let bugPoints = [ MKMapPoint(CLLocationCoordinate2DMake(0, 0)), MKMapPoint(CLLocationCoordinate2DMake(20, 0)), MKMapPoint(CLLocationCoordinate2DMake(10, 10)), MKMapPoint(CLLocationCoordinate2DMake(20, 20)), MKMapPoint(CLLocationCoordinate2DMake(0, 20)), MKMapPoint(CLLocationCoordinate2DMake(10, 10)), MKMapPoint(CLLocationCoordinate2DMake(0, 0)) ] let notBugPoints = [ MKMapPoint(CLLocationCoordinate2DMake(0, 0)), MKMapPoint(CLLocationCoordinate2DMake(20, 0)), MKMapPoint(CLLocationCoordinate2DMake(10, 10)), MKMapPoint(CLLocationCoordinate2DMake(20, 20)), MKMapPoint(CLLocationCoordinate2DMake(0, 20)), MKMapPoint(CLLocationCoordinate2DMake(15, 10)), MKMapPoint(CLLocationCoordinate2DMake(0, 0)) ] let polygon = MKPolygon(points: bugPoints, count: notBugPoints.count) mapView.addOverlay(polygon) // Frame our annotation and overlay mapView.camera = MKMapCamera(lookingAtCenter: CLLocationCoordinate2DMake(10, 10), fromDistance: 5000000, pitch: 0, heading: 0) // Add the created mapView to our Playground Live View PlaygroundPage.current.liveView = mapView

I have been using the following python library to generate apple map snapshots. has worked fine until about ~12 hours ago - now all I'm getting is "bad request" for any snapshot with overlays. if it's just a snapshot with a defined center and no polyline overlays, it still works. perhaps something has changed with the api's way of parsing percent encoded parameters? it's super irritating that there's no changelog or source code to view. what the heck??? https://pypi.org/project/mapsnap/

Is it possible to let the user select points of interest on the Map, such as restaurants, grocery stores, gas stations etc. I want the user to be able to select these points of interest that are already on the map, not those that I add to the map. Is this possible with the SwiftUI version of the MapKit Map?

I'm using apple maps to build a feature so users can create and save running/cycling/hiking routes. Currently the map only shows trails and similar local paths after zooming in to what is basically an extreme level. I want the trails and local paths to be more visible on a further, broader level of zoom. APPLE MAPS JS EX: https://trkbucket.s3.amazonaws.com/media/shoe_images/Screenshot_2024-10-23_at_10.52.17AM.png https://trkbucket.s3.amazonaws.com/media/shoe_images/Screenshot_2024-10-23_at_10.52.04AM.png APPLE MAPS iOS EX: https://trkbucket.s3.amazonaws.com/media/shoe_images/IMG_9DDF5C9A320D-1.jpeg Also strange that on iOS the path is visible while more zoomed out whereas JS does not. Please advise how to show these map items at a broader zoom.

mapView.showsTraffic=true mapView.showsScale=true mapView.showsCompass=true mapView.showsUserLocation=true mapView.showsBuildings=true mapView.showsLargeContentViewer=true hi，guy，please help to see this problem，thankyou，the mapkit api support some showsfunction，but I can not find how to show the exit of subway in my own app，but the map app of appple shows the exit of the subway，so how can I show the exit of the subway stations by using mapkit

I keep getting these messages every time the location of the user updates on the map. Although I doublechecked throughout my code and and I am not doing it within the view??? messages I receive: Publishing changes from within view updates is not allowed, this will cause undefined behavior. Publishing changes from within view updates is not allowed, this will cause undefined behavior. Publishing changes from within view updates is not allowed, this will cause undefined behavior. Publishing changes from within view updates is not allowed, this will cause undefined behavior. Publishing changes from within view updates is not allowed, this will cause undefined behavior. Publishing changes from within view updates is not allowed, this will cause undefined behavior

My app has been using MKLocalSearch.Request for keyword-based location searches, and it has worked smoothly for a long time. However, starting last Wednesday, I began receiving an error from MKLocalSearch.start: MKErrorDomain (error code 4). This issue only occurs when the network environment is based in mainland China (where the API uses the Amap data source). When the network switches to other regions and other Apple Maps data source is used, the error does not occur. Another complication is that the API doesn't always fail—certain keywords still work (for example, "Huawei"). Already filed a ticket in Feedback Assistant: https://feedbackassistant.apple.com/feedback/15544549

It appears that starting with macOS Sequoia, Quick Look Preview extension no longer loads MapKit maps correctly anymore. Map tiles do not appear, leaving users with a beige background. Users report that polylines do render correctly, but annotations appears black. This was previously working fine in prior macOS versions including Sonoma. STEPS TO REPRODUCE Create a macOS app project, with an associated document. Ensure project has a Quick Look preview extension, with necessary basic setups. Ensure that the extension mentioned in (2) must have a MKMapView. Any other cosmetic changes, etc, does not need to be implemented to observe the base issue. Do note that it has been reported that in addition to the map tiles not loading, annotations don't render correctly as well.

aoubut MKLaunchOptionsDirectionsModeKey， when I use MKLaunchOptionsDirectionsModeTransit as a mode in my code to call function openMaps ，the apple map app launches，it has 4 mode ，subbay or ferry，bus etc，so how can I specify the subway to transit before apple map app launch，so that I do not need to select on the map app，just specific subway in my own app， then the map app auto select the subway transit navigation。now it shows two much usless route。

I am trying to listen to a podcast, but for some reason; a message keep pops up saying: This podcast can't be played due to restrictions set for this device. This happens once I installed the latest IOS. Is there any solutions for this issue?

@State var position : MapCameraPosition = .userLocation(fallback: .region(.defaultRegion)) Map(position: $position) {} .onAppear { Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { timer in print("check.position",position.camera,position.region,position.rect,position.item) } } All of the value are nil, so how do I get the current camera position?? check.position nil nil nil nil check.position nil nil nil nil check.position nil nil nil nil check.position nil nil nil nil check.position nil nil nil nil check.position nil nil nil nil check.position nil nil nil nil check.position nil nil nil nil It is always nil (even if I manually move around the Map with a finger)

I’m building an iOS app using MapKit that allows users to create and navigate trails. I need offline map functionality, I was wondering if MapKit supports that. If not I was wondering if MapBox is a viable alternative to MapKit though I would prefer using MapKit. Thanks!

We are experiencing an issue where MKMapView appears red on the app builded with Xcode 16 and executed on iOS 18 simulator. Only the ground is affected and buildings or POIs stay normal color. Xcode 16.1 beta 3 shows same result. Is there any similar case?

Scrolling and zooming I have two apps that utilize the Apple Maps and since I updated my xcode to use IOS18, some of the functionalities have either been missing or glitching, and when I roll back to IOS17.5, everything seems to work fine. When I use MKMapView and use mapView.isZoomEnabled = true mapView.isScrollEnabled = true Scrolling and zooming is still not working on IOS18 but IOS17.5 works fine. Clicking on custom annotations When I press on a custom annotation I add to the MapView, the gesture is sometimes recognized and most of the times not recognized. If I have 20 annotations, there is a possibility only 2 of them respond to tap gestures. Below is how I define the annotation. Annotation("Pin", coordinate: CLLocationCoordinate2D(latitude: latitude, longitude: longitude), anchor: .bottom) { Button(action: {print ("Pressed annotation"){ CustomPin() } }

I updated my phone 14 pro to ios 18 and I faced issue with GPS. it’s show me in next Country and after minutes or hours it’s moved to the correct location how is it can fix it

I'm using MKLocalSearch with resultTypes set to .address to search for cities. The search results don't include an ID for each city, which I need for database storage (which from my understanding is the only thing we can store). If I can't store the city name, country, and coordinates in my database, and I'm not allowed to use third-party data (like a pre-made list of cities with coordinates), what are my options for uniquely identifying and storing these city results? Any suggestions would be greatly appreciated.

My app uses the SwiftUI Map control to display annotations. When annotations contain buttons AND the map has an .onTapGesture modifier, annotation button taps aren’t always recognized. Given the following ContentView, run it on an iOS device or simulator. Tap the buttons. Since iOS 18.0, some of the buttons won't respond to tap. I've also tried using the onTapGesture instead of a button, and that shows the same issue. This was not a problem under iOS 17.x: it has only shown up for my users since updating to iOS 18. Additionally, this issue does not occur when running on either macOS 15.0 or visionOS 2.0 when running in "designed for iPad" mode. Note that there was previously a tap issue on VisionOS 1.x (designed for iPad), where no tap gestures were received by annotations. I'm curious if this issue could be related. I have filed a report in Feedback Assistant (FB15273909). struct ContentView: View { private let center = CLLocationCoordinate2D(latitude: 37.77925, longitude: -122.41924) @State private var label: String = "tap a button" @State private var locations: [Location] = [] var body: some View { Map { ForEach(locations) { location in Annotation(location.name, coordinate: location.coordinate) { Button(location.name) { print("\(location.name) tapped") label = "\(location.name) tapped" } .buttonStyle(.borderedProminent) } .annotationTitles(.hidden) } } .onTapGesture { point in print("Map tapped") label = "map tapped" } .safeAreaInset(edge: .top) { Text(label) .padding() .background(.thinMaterial) .clipShape(.rect(cornerRadius: 10)) } .navigationTitle("Test Page") .navigationBarTitleDisplayMode(.inline) .task { for index in 1...16 { locations.append(Location(name: "location \(index)", coordinate: CLLocationCoordinate2D(latitude: center.latitude + Double.random(in: -0.02...0.02), longitude: center.longitude + Double.random(in: -0.02...0.02)))) } } } private struct Location: Identifiable { let id: UUID = UUID() let name: String let coordinate: CLLocationCoordinate2D } } #Preview { ContentView() }

Hi fellow developers, I'm encountering an issue when using MKLocalSearch to search for cities. Here's my setup: I'm using MKLocalSearch with an MKLocalSearch.Request object. I've set the resultTypes to .address to focus on address results. The problem: When I receive the search response, it includes the locations as expected. However, these locations don't have an identity or alternative identities. Questions: Is this the expected behavior when searching for cities? Without an identity, how can I uniquely identify and store these city results in my database? Would it be appropriate to store the city name, country, and coordinates instead? Thanks in advance!

I am working on a MapView with MapAnnotation on the Map and am having difficulty getting the MapAnnotation to function properly when selected. In my code, I want the MapAnnotation selected to be to the front if it is behind or partially blocked by another annotation. I have tried using a zIndex but this does not appear to work. Below is my MapView code along with a screenshot of the issue. Any help would be greatly appreciated. struct HospitalMapView: View { @StateObject var viewModel = HospitalViewModel() @State private var showSearchView = false @State private var showListView = false @State private var selectedTab: Int = 0 var body: some View { ZStack { VStack(spacing: 0) { TopTabView() // Map that updates the visible hospitals when the user moves or adjusts the map Map(coordinateRegion: $viewModel.region, interactionModes: .all, annotationItems: viewModel.filteredHospitals) { hospital in MapAnnotation(coordinate: CLLocationCoordinate2D(latitude: hospital.latitude, longitude: hospital.longitude)) { RoundedRectangle(cornerRadius: 40) .fill(viewModel.colorForPercentile(viewModel.calculatePercentile(for: hospital, in: viewModel.filteredHospitals))) .frame(width: 70, height: 30) // Maintain consistent size, adjust if necessary .overlay( Text("$\(Int(hospital.baseCharge / 1000))K") .foregroundColor(.white) .bold() ) .overlay( RoundedRectangle(cornerRadius: 40) .stroke(Color.blue, lineWidth: viewModel.selectedHospital == hospital ? 3 : 0) ) .onTapGesture { viewModel.selectHospital(hospital) // Move the selected hospital to the end of the list to bring it to the front viewModel.bringHospitalToFront(hospital) viewModel.showBottomSheet = true } .scaleEffect(viewModel.selectedHospital == hospital ? 1.1 : 1.0) // Highlight the selected hospital .zIndex(viewModel.selectedHospital == hospital ? 1 : 0) // Set the zIndex higher for the selected hospital .animation(.easeInOut, value: viewModel.selectedHospital) // Smooth transition } } .onAppear { // Initial update of visible hospitals when the map appears viewModel.updateFilteredHospitals() } .onChange(of: viewModel.region) { _ in // Update the visible hospitals as the user changes the map region viewModel.updateFilteredHospitals() } .edgesIgnoringSafeArea(.all) } // Hospital count display hovering over the map Text("\(viewModel.filteredHospitals.count) Hospitals") .font(.subheadline) .foregroundColor(.white) .padding(8) .background(Color.black.opacity(0.6)) .cornerRadius(10) .padding(.top, -315) // Adjust padding to position correctly below the TopTabView .zIndex(1) // Ensure it's above the map if let selectedHospital = viewModel.selectedHospital, viewModel.showBottomSheet { BottomSheetView(isOpen: $viewModel.showBottomSheet, maxHeight: UIScreen.main.bounds.height * 0.3) { SummaryTabView(selectedHospital: Binding( get: { selectedHospital }, set: { newValue in viewModel.selectHospital(newValue) } )) } .transition(.move(edge: .bottom)) .animation(.spring()) } } .safeAreaInset(edge: .bottom) { BottomTabView(selectedTab: $selectedTab, showListView: $showListView, showSearchView: $showSearchView, onSearchSelected: { showSearchView = true showListView = false }, onHomeSelected: { showSearchView = false showListView = false }, onListSelected: { showListView = true showSearchView = false }) } .fullScreenCover(isPresented: $showSearchView) { SearchView(viewModel: viewModel, showSearchView: $showSearchView, selectedTab: $selectedTab, showListView: $showListView) } .fullScreenCover(isPresented: $showListView) { ListView(selectedTab: $selectedTab, showListView: $showListView, showSearchView: $showSearchView) .environmentObject(viewModel) } .environmentObject(viewModel) } }

Hello everyone - I created a navigation app that uses a map overlay for finite spaces such as a zoo. I get these overlays created by a designer in .PNG - the designer creates the overlays and then puts a square or rectangle box around the overlay because it needs to be placed in 9 pieces making it easier to render when user zooms in/out... I used to have my Swift devs place the overlay using the correct coordinates that were given by a single person, but we never found out exactly how they did it - and now I can no longer contact the dev. Can anyone help me by telling me how I can get the coordinates (I am thinking that any opposite vertices would do - and maybe the center point?). I also have a few other questions: a. Is .SVG best to use for map overlays? b. Should we continue to chop into 9 pieces for faster rendering or is there a better way to do this in MapKit (we have been doing this for 4 years, maybe there is a better way) I would be so thankful for any help. Best, Michael