Passing Lat/Long to function in SwiftUI - swiftui

Question

I am building a SwiftUI app that shows data based on user lat/long. I have based my code off of this sample provided by the framework dev.
With SwiftUI I have my LocationManager set as:
class LocationViewModel: NSObject, ObservableObject, CLLocationManagerDelegate{
#Published var userLatitude: Double = 0.0
#Published var userLongitude: Double = 0.0
private let locationManager = CLLocationManager()
override init() {
super.init()
self.locationManager.delegate = self
self.locationManager.distanceFilter = 100.0
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
self.locationManager.requestWhenInUseAuthorization()
self.locationManager.startUpdatingLocation()
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
guard let location = locations.last else { return }
userLatitude = location.coordinate.latitude
userLongitude = location.coordinate.longitude
print("Hello I'm here! \(location)")
}
}
Whenever I go back to my ContentView and try to read the Lat/Long it just shows up as 0.0. but if I output them within the body the values show up correctly.
struct ContentView: View {
#State private var times = prayerTimes()
#ObservedObject var locationViewModel = LocationViewModel()
var body: some View {
NavigationView {
PrayerTimeView(times: $times)
.navigationBarTitle(Text("Prayer Times"))
}
}
static func prayerTimes() -> PrayerTimes? {
let cal = Calendar(identifier: Calendar.Identifier.gregorian)
let date = cal.dateComponents([.year, .month, .day], from: Date())
let coordinates = Coordinates(latitude: locationViewMode.userLatitude, longitude: locationViewMode.userLongitude)
var params = CalculationMethod.moonsightingCommittee.params
params.madhab = .hanafi
return PrayerTimes(coordinates: coordinates, date: date, calculationParameters: params)
}
}

Answer 1

prayerTimes() only call once when you init the view. Why don't you make times as a #Published of your ViewModel. When location changes, just update that value.
PrayerTimeView(times: $viewmodel.times)
.navigationBarTitle(Text("Prayer Times"))