swift 如何使用地图注释导航到另一个页面
How to navigate to another page with map annotations in swift
我正在尝试导航到另一个页面,这是我的地图控制器视图中的地图标记的详细信息页面。因此,例如,如果用户点击任何标记,他会具体了解该标记的详细信息
我创建了一个子类并初始化了我需要的数据,每个标记都是唯一的。
但现在我遇到了如何导航到下一页的问题,因为此注释不是变量。
这是我的代码:
我的子类:
class MyAnnotation: MKPointAnnotation{
var shopPID: String!
init(shopPID: String) {
self.shopPID = shopPID
}
}
添加标记:
db.collection("Shops").getDocuments() { (querySnapshot, err) in
if let err = err {
print("Error getting documents: \(err)")
} else {
for document in querySnapshot!.documents {
let lat = document["latitude"] as? String
let long = document["longitude"] as? String
let myFloat = (lat! as NSString).doubleValue
let myFloat2 = (long! as NSString).doubleValue
let annotation = MyAnnotation(shopPID: document["shopPID"] as! String)
annotation.coordinate = CLLocationCoordinate2D(latitude: myFloat, longitude: myFloat2)
annotation.title = document["name"] as? String
annotation.subtitle = "Click to view shop details"
annotation.shopPID = document["shopPID"] as? String
self.mapView.addAnnotation(annotation)
}
}
}
执行点击事件和 segue:
func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
print(#function)
if control == view.rightCalloutAccessoryView {
performSegue(withIdentifier: "mapToDetails", sender: nil)
}
}
这是我遇到问题的地方:我需要为存储在注释中的 newProjectVC 赋值。
我该怎么做?
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if (segue.identifier == "mapToDetails") {
let navigationController = segue.destination as! UINavigationController
let newProjectVC = navigationController.topViewController as! detailsSectionViewController
newProjectVC.getKey = //variable with each shopPID for each pin should be here
}
}
有什么帮助吗?谢谢你
这个圈子有我的标识符“mapsToDetails”
您应该使用此 MKMapViewDelegate 方法来设置点击注释时的自定义操作。
第一个子类 MKAnnotation:
class MyAnnotation: NSObject, MKAnnotation {
var shopPID: String
var coordinate: CLLocationCoordinate2D
let title: String?
let subtitle: String?
init(shopPID: String, coordinate: CLLocationCoordinate2D, title: String, subtitle: String) {
self.shopPID = shopPID
self.coordinate = coordinate
self.title = title
self.subtitle = subtitle
}
}
然后,在您的 MKMapViewDelegate 上使用:
func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
guard let annotation = view.annotation as? MyAnnotation else { return }
let uiStoryboard = UIStoryboard(name: "MyStoryboard", bundle: nil)
guard let vc = myStoryboard.instantiateViewController(withIdentifier: "MyViewController") as? MyViewController else { return }
vc.shopPID = annotation.shopPID
present(vc, animated: true)
}
这样您就可以识别点击的注释并将其值传递给您想要的 VC。
我正在尝试导航到另一个页面,这是我的地图控制器视图中的地图标记的详细信息页面。因此,例如,如果用户点击任何标记,他会具体了解该标记的详细信息
我创建了一个子类并初始化了我需要的数据,每个标记都是唯一的。
但现在我遇到了如何导航到下一页的问题,因为此注释不是变量。
这是我的代码:
我的子类:
class MyAnnotation: MKPointAnnotation{
var shopPID: String!
init(shopPID: String) {
self.shopPID = shopPID
}
}
添加标记:
db.collection("Shops").getDocuments() { (querySnapshot, err) in
if let err = err {
print("Error getting documents: \(err)")
} else {
for document in querySnapshot!.documents {
let lat = document["latitude"] as? String
let long = document["longitude"] as? String
let myFloat = (lat! as NSString).doubleValue
let myFloat2 = (long! as NSString).doubleValue
let annotation = MyAnnotation(shopPID: document["shopPID"] as! String)
annotation.coordinate = CLLocationCoordinate2D(latitude: myFloat, longitude: myFloat2)
annotation.title = document["name"] as? String
annotation.subtitle = "Click to view shop details"
annotation.shopPID = document["shopPID"] as? String
self.mapView.addAnnotation(annotation)
}
}
}
执行点击事件和 segue:
func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
print(#function)
if control == view.rightCalloutAccessoryView {
performSegue(withIdentifier: "mapToDetails", sender: nil)
}
}
这是我遇到问题的地方:我需要为存储在注释中的 newProjectVC 赋值。 我该怎么做?
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if (segue.identifier == "mapToDetails") {
let navigationController = segue.destination as! UINavigationController
let newProjectVC = navigationController.topViewController as! detailsSectionViewController
newProjectVC.getKey = //variable with each shopPID for each pin should be here
}
}
有什么帮助吗?谢谢你
这个圈子有我的标识符“mapsToDetails”
您应该使用此 MKMapViewDelegate 方法来设置点击注释时的自定义操作。
第一个子类 MKAnnotation:
class MyAnnotation: NSObject, MKAnnotation {
var shopPID: String
var coordinate: CLLocationCoordinate2D
let title: String?
let subtitle: String?
init(shopPID: String, coordinate: CLLocationCoordinate2D, title: String, subtitle: String) {
self.shopPID = shopPID
self.coordinate = coordinate
self.title = title
self.subtitle = subtitle
}
}
然后,在您的 MKMapViewDelegate 上使用:
func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
guard let annotation = view.annotation as? MyAnnotation else { return }
let uiStoryboard = UIStoryboard(name: "MyStoryboard", bundle: nil)
guard let vc = myStoryboard.instantiateViewController(withIdentifier: "MyViewController") as? MyViewController else { return }
vc.shopPID = annotation.shopPID
present(vc, animated: true)
}
这样您就可以识别点击的注释并将其值传递给您想要的 VC。