Here you go
//
// ContentView.swift
// ForumMapsQuestion
//
// Created by SB on 2024-01-05.
//
import SwiftUI
import MapKit
struct ContentView: View {
@StateObject var locationMgr = NewLocationManager()
@State private var mapCamPos: MapCameraPosition = .automatic
var body: some View {
ZStack {
Map(position: $mapCamPos)
.onReceive(locationMgr.$direction) { direction in
mapCamPos = .camera(MapCamera(
centerCoordinate: self.locationMgr.location.coordinate,
distance: 800,
heading: direction
))
}
.onReceive(locationMgr.$location) { location in
mapCamPos = .camera(MapCamera(
centerCoordinate: location.coordinate,
distance: 800,
heading: self.locationMgr.direction
))
}
VStack (alignment: .leading) {
VStack {
Text("Location from observable: \(locationMgr.location.description)")
Text("Direction from observable: \(locationMgr.direction)")
}
.padding()
.background(.gray)
.clipShape(RoundedRectangle(cornerSize: CGSize(width: 20, height: 10)))
.opacity(0.7)
Spacer()
}
}
}
}
#Preview {
ContentView()
}
final class NewLocationManager: NSObject, ObservableObject, CLLocationManagerDelegate {
@Published var location: CLLocation = CLLocation(coordinate: CLLocationCoordinate2D(latitude: 51.500685, longitude: -0.124570), altitude: .zero, horizontalAccuracy: .zero, verticalAccuracy: .zero, timestamp: Date.now)
@Published var direction: CLLocationDirection = .zero
private let locationManager = CLLocationManager()
override init() {
super.init()
locationManager.startUpdatingLocation()
locationManager.delegate = self
Task { [weak self] in
try? await self?.requestAuthorization()
}
}
func requestAuthorization() async throws {
if locationManager.authorizationStatus == .notDetermined {
locationManager.requestWhenInUseAuthorization()
}
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
locations.forEach { [weak self] location in
Task { @MainActor [weak self] in
self?.location = location
}
}
}
func locationManager(_ manager: CLLocationManager, didUpdateHeading newHeading: CLHeading) {
Task { @MainActor [weak self] in
self?.direction = newHeading.trueHeading
}
}
}
Topic:
UI Frameworks
SubTopic:
SwiftUI
Tags: