在mapView上点击注释以获得详细视图时，快速设置条件语句
在mapView上点击注释以获得详细视图时，快速设置条件语句
提问于 2022-08-24 14:35:17
我有一个带有几个自定义注释的mapView。现在我想要的是当我点击一个注释时，条件语句voor showLocation: String被设置为一个特定的值。
例如，annotation.title =未来的公司，showLocation变量被设置为“未来的公司”。当我点击标题为"Tip 1“的注释时，showLocation设置为"Tip 1”。
当您点击一个注释时，就会显示一个工作表。这是可行的，但我想在每个注释中显示一些不同的信息。
所以我介绍了MapTipView。
我试过什么？很多事情..。我也找到了一些信息，但其中大部分是为故事板。
我尝试将showLocation = "value“放入下面的函数中。但这只起作用一次。当您单击另一个注释时，仍然会得到您单击的第一个注释的值。
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
let annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "TESTING NOTE")
annotationView.canShowCallout = true
if annotation.title == "Start" {
annotationView.image = UIImage(named: "PictoStart")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
showLocation = "Start"
} else if annotation.title == "Firm of the Future" {
annotationView.image = UIImage(systemName: "house.fill")?.withTintColor(UIColor(red: 0.13, green: 0.505, blue: 0.261, alpha: 10), renderingMode: .alwaysOriginal)
let size = CGSize(width: 50, height: 50)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
showLocation = "Firm of the Future"
}
else if annotation.title == "Tip 1" {
annotationView.image = UIImage(named: "PictoSchuilplaats")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
showLocation = "Tip 1"
}
// and so for all annotations我试过了，但也没用：
struct MapTipView: View {
@Binding var showActionSheet: Bool
@Binding var showLocation: String
@State var annotation = MKPointAnnotation()
var body: some View {
ZStack {
Image("Achtergrond")
.resizable()
.ignoresSafeArea()
VStack {
if annotation.title == "Start" {
Text("Start")
} else {
Text("Fout")
}
}
}
}
}这是我的mapView的完整代码：
import SwiftUI
import MapKit
struct MapView: UIViewRepresentable {
let view = UIView()
let region: MKCoordinateRegion
let lineCoordinates: [CLLocationCoordinate2D]
@Binding var manager : CLLocationManager
@Binding var alert : Bool
@Binding var currentLocation : CLLocationCoordinate2D
@State private var UserTrackingMode: MKUserTrackingMode = .follow
@Binding var showActionSheet: Bool
@Binding var showLocation: String
@Binding var showingPlaceDetails: MKPointAnnotation?
func makeUIView(context: Context) -> MKMapView {
let mapView = context.environment.mkMapView
mapView.delegate = context.coordinator
mapView.region = region
mapView.showsScale = true
mapView.showsCompass = true
mapView.showsUserLocation = true
manager.requestWhenInUseAuthorization()
manager.delegate = context.coordinator as? CLLocationManagerDelegate
manager.startUpdatingLocation()
let FOTF = MKPointAnnotation()
FOTF.title = "Firm of the Future"
FOTF.coordinate = CLLocationCoordinate2D(latitude: 51.98837, longitude: 5.81737)
mapView.addAnnotation(FOTF)
let Start = MKPointAnnotation()
Start.title = "Start"
Start.coordinate = CLLocationCoordinate2D(latitude: 51.98847388992212, longitude: 5.817359983921051)
mapView.addAnnotation(Start)
let Tip1 = MKPointAnnotation()
Tip1.title = "Tip 1"
Tip1.subtitle = "Hier krijg je meer informatie over de schuilplaats."
Tip1.coordinate = CLLocationCoordinate2D(latitude: 51.989511, longitude: 5.818118)
mapView.addAnnotation(Tip1)
let Tip2 = MKPointAnnotation()
Tip2.title = "Tip 2"
Tip2.subtitle = "Hier krijg je meer informatie over het wapen."
Tip2.coordinate = CLLocationCoordinate2D(latitude: 51.993546, longitude: 5.818026)
mapView.addAnnotation(Tip2)
let Tip3 = MKPointAnnotation()
Tip3.title = "Tip 3"
Tip3.subtitle = "Hier krijg je meer informatie over de handlanger."
Tip3.coordinate = CLLocationCoordinate2D(latitude: 51.994310, longitude: 5.816085)
mapView.addAnnotation(Tip3)
let Brief1 = MKPointAnnotation()
Brief1.title = "Brief 1"
Brief1.subtitle = "Hier krijg je een brief, los het raadsel op."
Brief1.coordinate = CLLocationCoordinate2D(latitude: 51.996232, longitude: 5.818456)
mapView.addAnnotation(Brief1)
let Tip4 = MKPointAnnotation()
Tip4.title = "Tip 4"
Tip4.subtitle = "Hier krijg je meer informatie over de mogelijke dader."
Tip4.coordinate = CLLocationCoordinate2D(latitude: 51.997561, longitude: 5.818167)
mapView.addAnnotation(Tip4)
let Tip5 = MKPointAnnotation()
Tip5.title = "Tip 5"
Tip5.subtitle = "Hier krijg je meer informatie over het wapen."
Tip5.coordinate = CLLocationCoordinate2D(latitude: 51.998065, longitude: 5.820206)
mapView.addAnnotation(Tip5)
let Tip6 = MKPointAnnotation()
Tip6.title = "Tip 6"
Tip6.subtitle = "Hier krijg je meer informatie over de schuilplaats."
Tip6.coordinate = CLLocationCoordinate2D(latitude: 51.995915, longitude: 5.828055)
mapView.addAnnotation(Tip6)
let Tip7 = MKPointAnnotation()
Tip7.title = "Tip 7"
Tip7.subtitle = "Hier krijg je meer informatie over de handlanger."
Tip7.coordinate = CLLocationCoordinate2D(latitude: 51.995339, longitude: 5.831488)
mapView.addAnnotation(Tip7)
let Tip8 = MKPointAnnotation()
Tip8.title = "Tip 8"
Tip8.subtitle = "Hier krijg je meer informatie over de schuilplaats."
Tip8.coordinate = CLLocationCoordinate2D(latitude: 51.995415, longitude: 5.837951)
mapView.addAnnotation(Tip8)
let Tip9 = MKPointAnnotation()
Tip9.title = "Tip 9"
Tip9.subtitle = "Hier krijg je meer informatie over de handlanger."
Tip9.coordinate = CLLocationCoordinate2D(latitude: 51.994350, longitude: 5.837638)
mapView.addAnnotation(Tip9)
let Tip10 = MKPointAnnotation()
Tip10.title = "Tip 10"
Tip10.subtitle = "Hier krijg je meer informatie over de mogelijke dader."
Tip10.coordinate = CLLocationCoordinate2D(latitude: 51.992861, longitude: 5.838441)
mapView.addAnnotation(Tip10)
let Brief2 = MKPointAnnotation()
Brief2.title = "Brief 2"
Brief2.subtitle = "Hier krijg je een brief, los het raadsel op."
Brief2.coordinate = CLLocationCoordinate2D(latitude: 51.991260, longitude: 5.837517)
mapView.addAnnotation(Brief2)
let Tip11 = MKPointAnnotation()
Tip11.title = "Tip 11"
Tip11.subtitle = "Hier krijg je meer informatie over het wapen."
Tip11.coordinate = CLLocationCoordinate2D(latitude: 51.988222, longitude: 5.835309)
mapView.addAnnotation(Tip11)
let Tip12 = MKPointAnnotation()
Tip12.title = "Tip 12"
Tip12.subtitle = "Hier krijg je meer informatie over de handlanger."
Tip12.coordinate = CLLocationCoordinate2D(latitude: 51.987629, longitude: 5.832252)
mapView.addAnnotation(Tip12)
let Tip13 = MKPointAnnotation()
Tip13.title = "Tip 13"
Tip13.subtitle = "Hier krijg je meer informatie over de schuilplaats."
Tip13.coordinate = CLLocationCoordinate2D(latitude: 51.982672, longitude: 5.830202)
mapView.addAnnotation(Tip13)
let Tip14 = MKPointAnnotation()
Tip14.title = "Tip 14"
Tip14.subtitle = "Hier krijg je meer informatie over de mogelijke dader."
Tip14.coordinate = CLLocationCoordinate2D(latitude: 51.983640, longitude: 5.826948)
mapView.addAnnotation(Tip14)
let Tip15 = MKPointAnnotation()
Tip15.title = "Tip 15"
Tip15.subtitle = "Hier krijg je meer informatie over het wapen."
Tip15.coordinate = CLLocationCoordinate2D(latitude: 51.982390, longitude: 5.825463)
mapView.addAnnotation(Tip15)
let Tip16 = MKPointAnnotation()
Tip16.title = "Tip 16"
Tip16.subtitle = "Hier krijg je meer informatie over de mogelijke dader."
Tip16.coordinate = CLLocationCoordinate2D(latitude: 51.978387, longitude: 5.826538)
mapView.addAnnotation(Tip16)
let Brief3 = MKPointAnnotation()
Brief3.title = "Brief 3"
Brief3.subtitle = "Hier krijg je een brief, los het raadsel op."
Brief3.coordinate = CLLocationCoordinate2D(latitude: 51.975684, longitude: 5.826141)
mapView.addAnnotation(Brief3)
let Tip17 = MKPointAnnotation()
Tip17.title = "Tip 17"
Tip17.subtitle = "Hier krijg je meer informatie over de handlanger."
Tip17.coordinate = CLLocationCoordinate2D(latitude: 51.974398, longitude: 5.820770)
mapView.addAnnotation(Tip17)
let Tip18 = MKPointAnnotation()
Tip18.title = "Tip 18"
Tip18.subtitle = "Hier krijg je meer informatie over de mogelijke dader."
Tip18.coordinate = CLLocationCoordinate2D(latitude: 51.978024, longitude: 5.819883)
mapView.addAnnotation(Tip18)
let Tip19 = MKPointAnnotation()
Tip19.title = "Tip 19"
Tip19.subtitle = "Hier krijg je meer informatie over het wapen."
Tip19.coordinate = CLLocationCoordinate2D(latitude: 51.980607, longitude: 5.818235)
mapView.addAnnotation(Tip19)
let Tip20 = MKPointAnnotation()
Tip20.title = "Tip 20"
Tip20.subtitle = "Hier krijg je meer informatie over de schuilplaats."
Tip20.coordinate = CLLocationCoordinate2D(latitude: 51.984846, longitude: 5.818178)
mapView.addAnnotation(Tip20)
let Brief4 = MKPointAnnotation()
Brief4.title = "Brief 4"
Brief4.subtitle = "Hier krijg je een brief, los het raadsel op."
Brief4.coordinate = CLLocationCoordinate2D(latitude: 51.987069, longitude: 5.817966)
mapView.addAnnotation(Brief4)
let Finish = MKPointAnnotation()
Finish.title = "Finish"
Finish.coordinate = CLLocationCoordinate2D(latitude: 51.98831387558797, longitude: 5.817681513726711)
mapView.addAnnotation(Finish)
let polyline = MKPolyline(coordinates: lineCoordinates, count: lineCoordinates.count)
mapView.addOverlay(polyline)
return mapView
}
func updateUIView(_ view: MKMapView, context: Context) {}
func makeCoordinator() -> Coordinator {
Coordinator(self, showActionSheet: $showActionSheet, showLocation: $showLocation )
}
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation, context: Context, didUpdate userLocation: MKUserLocation) -> MKAnnotationView? {
mapView.showsUserLocation = true
guard annotation is MKPointAnnotation else { return nil }
let identifier = "Annotation"
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier)
if annotationView == nil {
annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
annotationView!.canShowCallout = true
annotationView?.rightCalloutAccessoryView = UIButton(type: .detailDisclosure)
} else {
annotationView!.annotation = annotation
}
// guard !annotation.isKind(of: MKUserLocation.self) else { return nil }
return annotationView
}
}
class Coordinator: NSObject, MKMapViewDelegate {
@Binding var showActionSheet: Bool
@Binding var showLocation: String
// @Binding var StartAnnotation: Bool
let uiView = UIView()
var parent: MapView
init(_ parent: MapView, showActionSheet: Binding<Bool>, showLocation: Binding<String>) {
self.parent = parent
_showActionSheet = showActionSheet
_showLocation = showLocation
}
func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
if let routePolyline = overlay as? MKPolyline {
let renderer = MKPolylineRenderer(polyline: routePolyline)
renderer.strokeColor = UIColor.red
renderer.lineWidth = 7
return renderer
}
return MKOverlayRenderer()
}
func mapView(_ mapView: MKMapView,
didUpdate userLocation: MKUserLocation) {
//mapView.userTrackingMode = .follow
// mapView.showsUserLocation = true
print("User location\(userLocation.coordinate)")
}
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
if status == .denied{
parent.alert.toggle()
}
}
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
let annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "TESTING NOTE")
annotationView.canShowCallout = true
if annotation.title == "Start" {
annotationView.image = UIImage(named: "PictoStart")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Firm of the Future" {
annotationView.image = UIImage(systemName: "house.fill")?.withTintColor(UIColor(red: 0.13, green: 0.505, blue: 0.261, alpha: 10), renderingMode: .alwaysOriginal)
let size = CGSize(width: 50, height: 50)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
}
else if annotation.title == "Tip 1" {
annotationView.image = UIImage(named: "PictoSchuilplaats")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 2" {
annotationView.image = UIImage(named: "PictoWapen")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 3" {
annotationView.image = UIImage(named: "PictoHandlanger")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Brief 1" {
annotationView.image = UIImage(named: "PictoBrief1")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 4" {
annotationView.image = UIImage(named: "PictoDader")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 5" {
annotationView.image = UIImage(named: "PictoWapen")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 6" {
annotationView.image = UIImage(named: "PictoSchuilplaats")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 7" {
annotationView.image = UIImage(named: "PictoHandlanger")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 8" {
annotationView.image = UIImage(named: "PictoSchuilplaats")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 9" {
annotationView.image = UIImage(named: "PictoHandlanger")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 10" {
annotationView.image = UIImage(named: "PictoDader")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Brief 2" {
annotationView.image = UIImage(named: "PictoBrief2")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 11" {
annotationView.image = UIImage(named: "PictoWapen")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 12" {
annotationView.image = UIImage(named: "PictoHandlanger")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 13" {
annotationView.image = UIImage(named: "PictoSchuilplaats")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 14" {
annotationView.image = UIImage(named: "PictoDader")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 15" {
annotationView.image = UIImage(named: "PictoWapen")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 16" {
annotationView.image = UIImage(named: "PictoDader")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Brief 3" {
annotationView.image = UIImage(named: "PictoBrief3")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 17" {
annotationView.image = UIImage(named: "PictoHandlanger")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 18" {
annotationView.image = UIImage(named: "PictoDader")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 19" {
annotationView.image = UIImage(named: "PictoWapen")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Tip 20" {
annotationView.image = UIImage(named: "PictoSchuilplaats")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Brief 4" {
annotationView.image = UIImage(named: "PictoBrief4")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else if annotation.title == "Finish" {
annotationView.image = UIImage(named: "PictoFinish")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
} else {
annotationView.image = UIImage(named: "SilMap")
let size = CGSize(width: 80, height: 80)
annotationView.image = UIGraphicsImageRenderer(size:size).image {
_ in annotationView.image!.draw(in:CGRect(origin:.zero, size:size))
}
}
return annotationView
}
func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
// showActionSheet.toggle()
print("calloutAccessoryControlTapped")
}
func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView){
showActionSheet.toggle()
print("didSelectAnnotationTapped")
}
}
struct EnvironmentMKMapView: EnvironmentKey {
typealias Value = MKMapView
static var defaultValue = MKMapView()
}
extension EnvironmentValues {
var mkMapView: MKMapView {
get { self[EnvironmentMKMapView.self] }
set { self[EnvironmentMKMapView.self] = newValue }
}
}
struct UserTrackingButton: UIViewRepresentable {
typealias UIViewType = MKUserTrackingButton
func makeUIView(context: Context) -> MKUserTrackingButton {
MKUserTrackingButton(mapView: context.environment.mkMapView)
}
func updateUIView(_ view: MKUserTrackingButton, context: Context) { }
}这是我的MapViewContent的代码：
import SwiftUI
import MapKit
struct MapViewContent: View {
@State var region = MKCoordinateRegion(
// FOTF
center: CLLocationCoordinate2D(latitude: 51.98495, longitude: 5.82808),
span: MKCoordinateSpan(latitudeDelta: 0.03, longitudeDelta: 0.03)
)
@State var manager = CLLocationManager()
@State var alert = false
@State var currentLocation = CLLocationCoordinate2D()
@State private var UserTrackingMode: MKUserTrackingMode = .none
@State var showActionSheet: Bool = false
@State var showLocation: String = ""
@State var showingPlaceDetails: MKPointAnnotation?
@State private var lineCoordinates = [
// Firm of the Future
CLLocationCoordinate2D(latitude: 51.98847388992212, longitude: 5.817359983921051),
//and more coordinates for a Polyline
];
var body: some View {
ZStack(alignment: .bottom) {
MapView(
region: region,
lineCoordinates: lineCoordinates, manager: $manager, alert: $alert, currentLocation: $currentLocation, showActionSheet: $showActionSheet, showLocation: $showLocation, showingPlaceDetails: $showingPlaceDetails
)
.edgesIgnoringSafeArea(.all)
HStack {
Spacer()
Text("Locatie volgen:")
.font(.headline)
//.padding(.horizontal)
UserTrackingButton()
.frame(width: 50, height: 50)
// .padding(.horizontal)
}.padding()
}
.sheet(isPresented: $showActionSheet) {
MapTipView(showActionSheet: $showActionSheet, showLocation: $showLocation)
}
}
}这是我的MapTipView的代码(随表显示的代码)：
import SwiftUI
import MapKit
struct MapTipView: View {
@Binding var showActionSheet: Bool
@Binding var showLocation: String
var body: some View {
ZStack {
Image("Achtergrond")
.resizable()
.ignoresSafeArea()
VStack {
if showLocation == "Start" {
Text("Start")
}
if showLocation == "Firm of the Future" {
Text("Firm of the Future")
}
if showLocation == "Tip 1" {
Text("Tip 1")
}
// and so on
else {
Text("Fout")
}
}
}
}
}有谁能帮我了解每一个注释的详细视图吗？谢谢是先进的。
编辑:这就是我对didSelect所做的：
func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView){
let annotation = MKPointAnnotation()
showActionSheet.toggle()
if annotation.title == "Start" {
showLocation = "Start"
}
if annotation.title == "Firm of the Future" {
showLocation = "Firm of the Future"
}
if annotation.title == "Tip 1" {
showLocation = "Tip 1"
}
//and so on for all annotations
print("didSelectAnnotationTapped")
}回答 1
Stack Overflow用户
发布于 2022-08-24 15:23:30
不要试图在view(for:)方法中记录当前的注释。
相反，将视图控制器(或其他一些对象)设置为映射视图的委托，并实现来自MKMapViewDelegate协议的MKMapViewDelegate。当该方法被调用时，记录被点击的注释。
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原文链接：
https://stackoverflow.com/questions/73475054
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