我正在尝试创建一个座位图布局功能，它采用坐标并创建一个地图，我想提供地图包含的部分的值。我正在使用自定义collectionViewLayout来创建单元格，但我在标题中收到了该错误。
这是我的协议 -
protocol SeatMapDelegate: class {
func getSectionCoordinates() -> [Int]
}
定义 -
func getSectionCoordinates() -> [Int] {
return sectionHeader
}
然后我将值分配给数组
var sectionHeader = [Int]()
sectionHeader=(delegate?.getSectionCoordinates())!
答案 0 :(得分：0)
下面的代码是我的搜索项目，并在地图上找到坐标： 也许帮助你
// ViewController.swift
// MapKit Starter
//
// Created by Ehsan Amiri on 10/25/16.
// Copyright © 2016 Ehsan Amiri. All rights reserved.
//
import UIKit
import MapKit
import Foundation
class ViewController: UIViewController {
@IBOutlet var mapView: MKMapView?
@IBOutlet weak var text: UITextField!
var index = 0
var indexx = 0
let locationManager = CLLocationManager()
var picName:String?
var place :MKAnnotation?
var places = [Place]()
var place1 :MKAnnotation?
var places1 = [Place]()
override func viewDidLoad() {
super.viewDidLoad()
//downpic()
self.requestLocationAccess()
}
override func viewWillAppear(_ animated: Bool) {
let defaults = UserDefaults.standard
let age = defaults.integer(forKey: "maptype")
switch (age) {
case 0:
mapView?.mapType = .standard
case 1:
mapView?.mapType = .satellite
case 2:
mapView?.mapType = .hybrid
default:
mapView?.mapType = .standard
}
}
@IBAction func info(_ sender: Any) {
}
override var prefersStatusBarHidden: Bool {
return true
}
func requestLocationAccess() {
let status = CLLocationManager.authorizationStatus()
switch status {
case .authorizedAlways, .authorizedWhenInUse:
return
case .denied, .restricted:
print("location access denied")
default:
locationManager.requestWhenInUseAuthorization()
}
}
@IBAction func textField(_ sender: Any) {
mapView?.removeOverlays((mapView?.overlays)!)
mapView?.removeAnnotations((mapView?.annotations)!)
self.server()
_ = Timer.scheduledTimer(timeInterval: 10.0, target: self, selector: #selector(self.server), userInfo: nil, repeats: true)
let when = DispatchTime.now() + 1.5
DispatchQueue.main.asyncAfter(deadline: when) {
if self.indexx != 0 {
self.addAnnotations()
self.addPolyline()
}
}
}
@objc func server() {
place = nil
places = [Place]()
place1 = nil
places1 = [Place]()
indexx = 0
let id = text.text
print("id=\(id!)")
let url = URL(string: "my server")!
var request = URLRequest(url: url)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let postString = "id=\(id!)"
request.httpBody = postString.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data else { // check for fundamental networking error
print("error=\(String(describing: error))")
return
}
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 { // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(String(describing: response))")
}
let responseString = String(data: data, encoding: .utf8)
print("responseString = \(String(describing: responseString))")
let stringgg = "notFound\n\n\n\n"
if responseString == stringgg {
print(stringgg)
}else{
let json = try! JSONSerialization.jsonObject(with: data, options: [])
let betterJSON = json as! NSArray
let jsonCount = betterJSON.count
print(betterJSON)
for item in betterJSON {
self.indexx += 1
let dictionary = item as? [String : Any]
let title = dictionary?["title"] as? String
let subtitle = dictionary?["description"] as? String
let latitude = dictionary?["latitude"] as? Double ?? 0, longitude = dictionary?["longitude"] as? Double ?? 0
self.place = Place(title: title, subtitle: subtitle, coordinate: CLLocationCoordinate2DMake(latitude , longitude ))
self.places.append(self.place as! Place)
print("latttt",longitude)
if self.indexx == 1{
let shipid = UserDefaults.standard
shipid.set(title, forKey: "origin")
shipid.set(subtitle, forKey: "date")
}
if jsonCount == self.indexx{
let shipid = UserDefaults.standard
shipid.set(title, forKey: "location")
self.place1 = Place(title: title, subtitle: subtitle, coordinate: CLLocationCoordinate2DMake(latitude , longitude ))
self.places1.append(self.place1 as! Place)
}
}
}
}
task.resume()
let when = DispatchTime.now() + 1.5
DispatchQueue.main.asyncAfter(deadline: when) {
if self.indexx != 0 {
self.addAnnotations()
self.addPolyline()
}
}
}
func addAnnotations() {
print("hhhh",places)
mapView?.delegate = self
mapView?.removeAnnotations((mapView?.annotations)!)
mapView?.addAnnotations(places1)
let overlays = places1.map { MKCircle(center: $0.coordinate, radius: 100) }
mapView?.addOverlays(overlays)
}
func addPolyline() {
var locations = places.map { $0.coordinate }
let polyline = MKPolyline(coordinates: &locations, count: locations.count)
// print("Number of locations: \(locations.count)")
index = locations.capacity
mapView?.add(polyline)
}
}
extension ViewController: MKMapViewDelegate {
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
if annotation is MKUserLocation {
return nil
}
else {
let annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "annotationView") ?? MKAnnotationView()
annotationView.image = UIImage(named:"place icon")
annotationView.rightCalloutAccessoryView = UIButton(type: .detailDisclosure)
annotationView.canShowCallout = true
return annotationView
}
}
func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
if overlay is MKCircle {
let renderer = MKCircleRenderer(overlay: overlay)
renderer.fillColor = UIColor.black.withAlphaComponent(0.5)
renderer.strokeColor = UIColor.blue
renderer.lineWidth = 2
return renderer
} else if overlay is MKPolyline {
let renderer = MKPolylineRenderer(overlay: overlay)
renderer.strokeColor = UIColor.orange
renderer.lineWidth = 2
return renderer
}
return MKOverlayRenderer()
}
func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
//guard let annotation = view.annotation as? Place, let title = annotation.title else { return }
let shipidname = text.text
let shipid = UserDefaults.standard
shipid.set(shipidname, forKey: "shipid")
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let secondViewController = storyboard.instantiateViewController(withIdentifier: "shipinfo")
self.present(secondViewController, animated: true, completion: nil)
}
}