Maps & Location

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Learn how to integrate MapKit and Core Location to unlock the power of location-based features in your app.

Maps & Location Documentation

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Using Maps in App Intents
I want to use MapKit with App Intents, but the map does not show up.(See attached image) Can anyone help me solve this? import SwiftUI import MapKit struct ContentView: View {   @State private var region = MKCoordinateRegion(     center: CLLocationCoordinate2D(latitude: 37.334_900,                     longitude: -122.009_020),     latitudinalMeters: 750,     longitudinalMeters: 750   )       var body: some View {     VStack {       Map(coordinateRegion: $region).frame(width:300, height:300)         .disabled(true)     }   } } struct ContentView_Previews: PreviewProvider {   static var previews: some View {     ContentView()   } } import AppIntents import SwiftUI import MapKit struct test20220727bAppIntentsExtension: AppIntent {   static var title: LocalizedStringResource = "test20220727bAppIntentsExtension"       func perform() async throws -> some IntentResult {     return .result(value: "aaa", view: ContentView())   } } struct testShortcuts:AppShortcutsProvider{   @available(iOS 16.0, *)   static var appShortcuts: [AppShortcut]{     AppShortcut(       intent: test20220727bAppIntentsExtension(),       phrases: ["test20220727bAppIntentsExtension" ]     )   } }
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1.3k
Mar ’25
Potential memory leaks in CLLocationUpdate.Updates
This is my first post here. Please guide me, if I need to provide more information to answer this post. I write a simple application, that monitors GPS position (location). I followed Apple documentation for LiveUpdates: https://developer.apple.com/documentation/corelocation/supporting-live-updates-in-swiftui-and-mac-catalyst-apps My app can monitor location in foreground, background or it can completely stop monitoring location. Background location, if needed, is switched on when application changes scenePhase to .background. But it is in the foreground, that memory leaks occur (according to Instruments/Leaks. Namely Leaks points to the instruction: let updates = CLLocationUpdate.liveUpdates() every time I start location and then stop it, by setting updatesStarted to false. Leaks claims there are 5x leaks there: Malloc 32 Bytes 1 0x6000002c1d00 32 Bytes libswiftDispatch.dylib OS_dispatch_queue.init(label:qos:attributes:autoreleaseFrequency:target:) CLDispatchSilo 1 0x60000269e700 96 Bytes CoreLocation 0x184525c64 Malloc 48 Bytes 1 0x600000c8f2d0 48 Bytes Foundation +[NSString stringWithUTF8String:] NSMutableSet 1 0x6000002c4240 32 Bytes LocationSupport 0x18baa65d4 dispatch_queue_t (serial) 1 0x600002c69c80 128 Bytes libswiftDispatch.dylib OS_dispatch_queue.init(label:qos:attributes:autoreleaseFrequency:target:) I tried [weak self] in Task, but it doesn't solve the leaks problem and causes other issues, so I dropped it. Anyway, Apple doesn't use it either. Just in case this is my function, which has been slightly changed comparing to Apple example, to suit my needs: func startLocationUpdates() { Task() { do { self.updatesStarted = true let updates = CLLocationUpdate.liveUpdates() for try await update in updates { // End location updates by breaking out of the loop. if !self.updatesStarted { self.location = nil self.mapLocation = nil self.track.removeAll() break } if let loc = update.location { let locationCoordinate = loc.coordinate let location2D = CLLocationCoordinate2D(latitude: locationCoordinate.latitude, longitude: locationCoordinate.longitude) self.location = location2D if self.isAnchor { if #available(iOS 18.0, *) { if !update.stationary { self.track.append(location2D) } } else { // Fallback on earlier versions if !update.isStationary { self.track.append(location2D) } } } } } } catch { // } return } } Can anyone help me locating these leaks?
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688
Apr ’25
Background location tracking on iPad fails
My app needs to track background location for a period of several hours while the user is using it, and we want to allow the user to switch apps or lock their phone while this is happening. We don't need to track location permanently and because of this, we don't want to request the "Always allow" permission. The app requests "While in use" permission and it has the "Location updates" background mode enabled. The CLLocationManager has 'allowsBackgroundLocationUpdates' set to true, 'pausesLocationUpdatesAutomatically' false, kCLLocationAccuracyBest, kCLDistanceFilterNone, and .fitness for the activity type (we expect the user to be walking). The app also initializes a CLBackgroundActivitySession while it is tracking location and invalidates it when done. When I test this combination on my iPhone, it works fine. I get location tracking in the background for as long as I need it, regardless of what else I do with the phone. However, my customer says it doesn't work for him. He is using a Wifi-only iPad with an external GPS receiver called "BadElf GPS Pro". He says that the external GPS receiver works fine with other apps on his iPad. With my app, he gets background location tracking only for a short time, and then it stops. The app does monitor the "locationManagerDidPauseLocationUpdates" callback and posts a local notification if it gets called, but it doesn't get called. I've also confirmed with him that he is not force-quitting the app and the app is not otherwise being terminated by iOS. Is there something I'm missing?
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649
Feb ’25
How can you determine if the map tiles in MapKit have successfully loaded?
We are developers of a golf app designed to assist golfers on the course. A key feature of our app is displaying a map of each hole, and we are currently transitioning to using MapKit and camera functionalities for this purpose. However, we are encountering issues with the downloading of map tiles when using the default satellite imagery. We have tried several approaches to diagnose the issue: We have tried several things to diagnose the issue: We implemented the mapViewDidFailLoadingMap delegate method. But it is inconsistent, sometimes triggering offline errors even when map tiles are cached. We implemented, the mapViewDidFinishRenderingMap method, but it always returns false when offline or you won't get the callback. Which doesn't let us know that rendering tiles has failed. We would appreciate your guidance on the following specific questions: Does MapKit provide a way to confirm if a map tile has fully loaded? Is there a method to detect if a portion of the map hasn't loaded or if a tile request has failed? Can we determine whether a map tile is cached, and if so, how long it will remain cached, similar to Cache-Control HTTP headers? Is there a way to trigger the preloading of map tiles when we know the user has a good internet connection? Please see the sample project for steps to reproduce the issue. Thank you for any assistance!
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479
Jan ’25
MapkitJS Snapshot
I am having issues loading in a mapkit snapshot. I get an error saying that https://domain.com and they're expecting domain.com. I have no idea what could be going wrong here. I set the domains properly in the mapkit tokens. When I click on the link it opens a new tab and loads what the data properly, but somehow in the application on production this error comes up.
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371
Jan ’25
How to Reduce Geolocation Drifting Inside Buildings on iOS?
I am developing a Flutter app that uses geolocation data extensively. While the location accuracy is excellent under an open sky, I’ve noticed significant drifting when users are inside large buildings. This impacts the app’s functionality as precise location data is critical. I would like to know: Are there any specific configurations or APIs available in the Apple ecosystem to enhance indoor geolocation accuracy? Would combining GPS with other location technologies (like Wi-Fi or Bluetooth) reduce drifting effectively? Are there recommended practices for handling geolocation indoors on iOS? Any advice, examples, or guidance would be greatly appreciated!
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387
Jan ’25
iOS 18: startRangingBeacons Stops When Display is Off in Background (Worked on iOS 17.2.1)
Issue Summary After calling startRangingBeacons, the didRangeBeacons delegate method does not receive iBeacon scan data when the device display is turned off in the background. Expected Behavior On iOS 17.2.1 (iPhone 14), beacon ranging continues in the background even when the display is turned off. The same behavior is expected on iOS 18, but it is not working as intended. Observed Behavior On iOS 18, once the display turns off, beacon ranging stops, and the didRangeBeacons method is not triggered until the display is turned back on. • Location permission is set to “Always Allow.” • Background Modes are correctly configured (Location Updates enabled). Steps to Reproduce Ensure location permission is set to Always Allow. Enable Background Modes → Location Updates in Xcode settings. Call startRangingBeacons(in:) in the app. Put the app in the background and turn off the display. Observe that didRangeBeacons is not triggered while the display is off. Additional Notes • The issue does not occur on iOS 17.2.1 (iPhone 14), where beacon ranging continues even with the display off. • This behavior change is observed on iOS 18 across multiple devices. Could you confirm if this is an intended change in behavior or a bug? If this is expected behavior, what alternative approach is recommended to maintain continuous beacon ranging when the display is off in the background?
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529
Feb ’25
LookAroundPreview navigation not working on macOS
The code below using LookAroundPreview works fine on iOS (showing the preview image with a button saying "Look Around" at the top to enter full screen with navigation), but on macOS (15.3) there is no button and no way to navigate the view. Is this a bug or is there something I need to do differently on macOS? I have also tried using AppKit with MKLookAroundViewController and I don't seem get the button to launch full screen there either. import SwiftUI import MapKit struct ContentView: View { var body: some View { LookAroundPreviewView(coordinate: CLLocationCoordinate2D(latitude: 37.33182, longitude: -122.03118)) .frame(width: 300, height: 200) } } struct LookAroundPreviewView: View { let coordinate: CLLocationCoordinate2D @State private var scene: MKLookAroundScene? @State private var errorMessage: String? var body: some View { Group { if scene != nil { LookAroundPreview(scene: $scene, allowsNavigation: true) } else if let errorMessage = errorMessage { Text("Error: \(errorMessage)") .foregroundColor(.red) } else { ProgressView("Loading Look Around Preview...") } } .task { do { let request = MKLookAroundSceneRequest(coordinate: coordinate) let fetchedScene = try await request.scene scene = fetchedScene } catch { errorMessage = error.localizedDescription print("Error loading Look Around scene: \(error)") } } } }
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365
Feb ’25
Underground location (in subway) doesn't update properly
We (at the NYC MTA) are building a new subway/bus app and diving deep into location tracking on iOS. We’re encountering an issue with how Core Location functions in the subway, specifically regarding how long it takes to update a passenger’s location as they travel from station to station. As an example, please see this video: https://drive.google.com/file/d/1yaddkjyPEETvTEmClPAJ2wks8b-_whqB/view?usp=sharing The red dot is set manually (via a tap gesture) and represents the ground truth of where the phone actually is at that moment. The most critical moment to observe is when the train physically arrives at a station (i.e., when I can see the platform outside my window). At this moment, I update the red dot to the center of the station on the map. Similarly, I adjust the red dot when the train departs a station, placing it just outside the station in the direction of travel. The trip shown is from Rector St to 14 St. All times are in EST. I’d like to investigate this issue further since providing a seamless underground location experience is crucial for customers. As a point of comparison, Android phones exhibit near-perfect behavior, proving that this is technically feasible. We want to ensure the iOS experience is just as smooth.
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530
Feb ’25
CMAltimeter becomes somehow uncalibrated: absolute locations not delivered anymore (temporarily)
Note: I have had issues with CMAltimeter since whats seems to have been a major undocumented modification since iOS 17.4. So I'm using the CMAltimeter absolute locations delivery. Sometimes, the altimeter seems to be in an uncalibrated mode and therefore, no altitude delivery happens. Is there a way to be inform of such state? Currently, it just doesn't work and I can't inform the user about this. They just think the app is broken What message should I give to the users to accelerate the calibration such that the CMAltimeter will work again? Also, users have reported that the CMAltimeter can temporarily stop delivering altitude updates, even though it should. So I guess my question resumes to this: Whats the best practice to handle an uncalibrated CMAltimeter? Thanks!
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327
Feb ’25
Offline Mapkit tiles
I'm currently developing an app with mapkit which I may submit to the Swift Student Challenge. So anyways, the app will be used completely offline. I was wondering if there was any way to include very low resolution map tiles with the app files. That way, the app never needs wifi. However, I'm not sure if this is possible, especially since the map would need to be under 20 mb. Thanks.
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299
Feb ’25
Simulator Location Authorization Issue: Authorization Status Remains notDetermined After Denying and Changing in System Settings
Hello everyone, I'm encountering a strange location authorization issue in the iOS simulator, and I'm hoping someone can help me analyze it. Problem Description: When my app runs for the first time in the simulator, it requests location permissions. I select "Deny" for the authorization. Then, I go to the simulator's "Settings" -> "Privacy & Security" -> "Location Services" and enable location permissions for my app. However, when I return to the app, CLLocationManager.authorizationStatus still returns .notDetermined, and the authorization request pop-up does not appear again. This issue persists even after resetting the simulator settings multiple times. import CoreLocation @Observable final class LocationManager: NSObject, CLLocationManagerDelegate { var locationManager = CLLocationManager() var currentLocation: CLLocationCoordinate2D? override init() { super.init() locationManager.delegate = self } func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) { let status = manager.authorizationStatus print("Authorize Status: \(status)") switch status { case .authorizedWhenInUse, .authorizedAlways: locationManager.startUpdatingLocation() case .denied, .restricted: stopLocation() case .notDetermined: locationManager.requestWhenInUseAuthorization() print("Location permission not determined.") @unknown default: break } } func requestLocation() { let status = locationManager.authorizationStatus if status == .authorizedWhenInUse || status == .authorizedAlways { locationManager.requestLocation() } else { locationManager.requestWhenInUseAuthorization() } } func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { guard let newLocation = locations.first else { return } currentLocation = newLocation.coordinate print("Updated location: \(newLocation.coordinate)") } func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) { print("Location update failed with error: \(error.localizedDescription)") currentLocation = nil } func stopLocation() { locationManager.stopUpdatingLocation() print("Stopped updating location") } }
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539
Feb ’25
MapPolygon
I recently converted over my map from Mapbox Maps to MapKit Map. I have been able to add my polygons on the Map using MapPolygon. The issue I am having is being able to select the Polygon to be able to view information about the polygon. Has anyone been able to figure out a way to tap on the Polygon? I have tried selection but the Polygon doesn't recognize the tap. I would really appreciate it if anyone could point me in the right direction of how I can accomplish this.
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402
Feb ’25
Bachelor Thesis -Geolocation
Hello, I write a Bachelor-Theses about Geolocation on an iPhone. I have a Signal-generator from R&S to simulate GPS-Data. I write an App on an Android-Phone and can readout the GPS-ID and the strength from the signal and the time and Position for Geolocation zb. Island or Africa like this. Now my thesis is about the iPhone and I write an App for get the location manager Geolocation and to save it to a sqlite-database with longitude, latitude and time. But the App recognizes only the real world for geolocation on GPS (LTE and Wlan are disabled!). With my Radio-Generator it would not recognize any Geolocation like the Android phone.? So I need some fast help for my thesis, where are my problems? I allready have a function like this: func updateAccuracy(highAccuracy: Bool) { locationManager.desiredAccuracy = highAccuracy ? kCLLocationAccuracyBestForNavigation : kCLLocationAccuracyHundredMeters print("🎯 GPS-Genauigkeit geändert: (highAccuracy ? "Hoch" : "Plane-Genauigkeit")") } but nothing happens? Best regards
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334
Feb ’25
MapKit: Customize view shown by .mapFeatureSelectionAccessory
Hello, Probably a noob question but I can't find any example code around this use case, and really no past questions I could find that address it either. So, I really love that, when a user taps a POI on the map in my app, the map figures out the right POI every time. Flawless. However, when using .mapFeatureSelectionAccessory, I've tried probably 10-12 iterations, and there doesn't seem to be any way to either: a) add custom content to the place card that's shown, or b) replace that place card altogether with a view of my own, or c) capture the place data but use it in a custom view I want to be able to leverage the accuracy of Apple's tap gesture detection, but show, for example, only the name of the place, along with buttons and a form I have in a view. Right now if I'm using .mapFeatureSelectionAccessory, I can't seem to bypass the place card at all.
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281
Mar ’25
com.apple.corelocation.shared Crash after implementation of live updates
After the implementation of liveUpdates(_:) to receive asynchronous sequence of location updates, we are receiving crash reports on a huge number of users. However we cannot reproduce the crash so any help is much appreciated. This is the stack trace: com.apple.main-thread 0 libsystem_kernel.dylib 0xce4 mach_msg2_trap + 8 1 libsystem_kernel.dylib 0x439c mach_msg2_internal + 76 2 libsystem_kernel.dylib 0x42b8 mach_msg_overwrite + 428 3 libsystem_kernel.dylib 0x4100 mach_msg + 24 4 CoreFoundation 0x717b0 __CFRunLoopServiceMachPort + 160 5 CoreFoundation 0x70e90 __CFRunLoopRun + 1208 6 CoreFoundation 0x957f0 CFRunLoopRunSpecific + 572 7 GraphicsServices 0x1190 GSEventRunModal + 168 8 UIKitCore 0x3ca158 -[UIApplication _run] + 816 9 UIKitCore 0x3c8388 UIApplicationMain + 336 10 atto 0x6a41a0 main + 25 (AppDelegate.swift:25) 11 ??? 0x1ac153a58 (Missing) com.apple.uikit.eventfetch-thread 0 libsystem_kernel.dylib 0xce4 mach_msg2_trap + 8 1 libsystem_kernel.dylib 0x439c mach_msg2_internal + 76 2 libsystem_kernel.dylib 0x42b8 mach_msg_overwrite + 428 3 libsystem_kernel.dylib 0x4100 mach_msg + 24 4 CoreFoundation 0x717b0 __CFRunLoopServiceMachPort + 160 5 CoreFoundation 0x70e90 __CFRunLoopRun + 1208 6 CoreFoundation 0x957f0 CFRunLoopRunSpecific + 572 7 Foundation 0x74728 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212 8 Foundation 0x73558 -[NSRunLoop(NSRunLoop) runUntilDate:] + 64 9 UIKitCore 0x4bd354 -[UIEventFetcher threadMain] + 424 10 Foundation 0x115f40 NSThread__start + 732 11 libsystem_pthread.dylib 0x1afc _pthread_start + 136 12 libsystem_pthread.dylib 0x1a04 thread_start + 8 com.google.firebase.crashlytics.MachExceptionServer 0 FirebaseCrashlytics 0x21c10 FIRCLSProcessRecordAllThreads + 184 1 FirebaseCrashlytics 0x21ff0 FIRCLSProcessRecordAllThreads + 1176 2 FirebaseCrashlytics 0x18e74 FIRCLSHandler + 48 3 FirebaseCrashlytics 0x1b804 FIRCLSMachExceptionServer + 688 4 libsystem_pthread.dylib 0x1afc _pthread_start + 136 5 libsystem_pthread.dylib 0x1a04 thread_start + 8 com.apple.NSURLConnectionLoader 0 libsystem_kernel.dylib 0xce4 mach_msg2_trap + 8 1 libsystem_kernel.dylib 0x439c mach_msg2_internal + 76 2 libsystem_kernel.dylib 0x42b8 mach_msg_overwrite + 428 3 libsystem_kernel.dylib 0x4100 mach_msg + 24 4 CoreFoundation 0x717b0 __CFRunLoopServiceMachPort + 160 5 CoreFoundation 0x70e90 __CFRunLoopRun + 1208 6 CoreFoundation 0x957f0 CFRunLoopRunSpecific + 572 7 CFNetwork 0xeba68 +[__CFN_CoreSchedulingSetRunnable _run:] + 416 8 Foundation 0x115f40 NSThread__start + 732 9 libsystem_pthread.dylib 0x1afc _pthread_start + 136 10 libsystem_pthread.dylib 0x1a04 thread_start + 8 Thread 0 libsystem_kernel.dylib 0xa90 __workq_kernreturn + 8 1 libsystem_pthread.dylib 0x46ac _pthread_wqthread + 368 2 libsystem_pthread.dylib 0x19f8 start_wqthread + 8 Crashed: com.apple.corelocation.shared 0 libobjc.A.dylib 0x2050 objc_release_x8 + 16 1 libsystem_blocks.dylib 0x1d30 bool HelperBase::disposeCapture<(HelperBase::BlockCaptureKind)3>(unsigned int, unsigned char*) + 68 2 libsystem_blocks.dylib 0x16a8 HelperBase::destroyBlock(Block_layout*, bool, unsigned char*) + 116 3 libsystem_blocks.dylib 0x1180 _call_dispose_helpers_excp + 72 4 libsystem_blocks.dylib 0x111c _Block_release + 236 5 libsystem_blocks.dylib 0xff4 bool HelperBase::disposeCapture<(HelperBase::BlockCaptureKind)4>(unsigned int, unsigned char*) + 68 6 libsystem_blocks.dylib 0x16f8 HelperBase::destroyBlock(Block_layout*, bool, unsigned char*) + 196 7 libsystem_blocks.dylib 0x1180 _call_dispose_helpers_excp + 72 8 libsystem_blocks.dylib 0x111c _Block_release + 236 9 libdispatch.dylib 0x1b4f8 _dispatch_client_callout + 16 10 libdispatch.dylib 0xa2cc _dispatch_lane_serial_drain + 736 11 libdispatch.dylib 0xad90 _dispatch_lane_invoke + 380 12 libdispatch.dylib 0x15178 _dispatch_root_queue_drain_deferred_wlh + 292 13 libdispatch.dylib 0x149fc _dispatch_workloop_worker_thread + 540 14 libsystem_pthread.dylib 0x4660 _pthread_wqthread + 292 15 libsystem_pthread.dylib 0x19f8 start_wqthread + 8 Thread 0 libsystem_pthread.dylib 0x19f0 start_wqthread + 142 Thread 0 libsystem_pthread.dylib 0x19f0 start_wqthread + 142 Thread 0 libsystem_pthread.dylib 0x19f0 start_wqthread + 142
1
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279
Feb ’25
The App Remembers Location Access Permission only for 24 Hours
We have a PWA app developed by our company. In order to distribute this app to users' iPhones, we put this PWA app inside an XCode app. That means we put a WebView in XCode to display the PWA URL. Everything works perfect, except for location access. The PWA app access the device location. When the first time the app acess location, it asks for user consent two times, by PWA app and by the XCode app. This is fine. When the user clicks Allow, the XCode app preserves the user choice and never asks again. However, the PWA app keeps on asking user permission every day. If we close the app open again, it will ask one more time. That means twice daily. But if we close and open the app for a third time, it will not ask. It remembers the user choice only for 24 hours. If we install the PWA app directly in iPhone (that means if we add the URL as bookmark in home screen), it is asking for location permission only once. However, when we put this app inside an XCode app it is asking every day. This affects the user experience, and as our users are not tech savvy, causing many issues. Is there a way to force the PWA app inside XCode app to remember the user choice? Any help is very much appreciated. Thanks,
0
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373
Mar ’25
How to update business information on Apple Maps Ukraine?
Hello everyone, I need help updating business information on Apple Maps for locations in Ukraine. Unfortunately, the usual methods, like "Report an Issue" in the Maps app or using Apple Business Connect, don’t seem to be working properly for Ukrainian businesses. Many locations have outdated or missing details, which is frustrating for both business owners and customers. Given the current situation, keeping information accurate is more important than ever. Has anyone successfully updated business listings in Ukraine recently? If so, could you share the process or any contacts that might help? Any advice would be greatly appreciated! Thanks in advance!
1
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285
Mar ’25