小编jva*_*van的帖子

我有一个纬度数组和另一个经度数组,我添加到CLLocationCoordinate2D类型的数组.然后我使用新数组来注释地图上的多个点.一些,或大多数,甚至所有注释都在地图上显示但是当我放大(是的,放大IN)时,一些注释消失,然后回来,或者不.关于如何让它们全部可见的任何想法？这是我在缩小时所期望的行为,而不是.

这是我用于上述内容的代码.

import UIKit
import MapKit
import CoreLocation

class MultiMapVC: UIViewController, CLLocationManagerDelegate {

@IBOutlet weak var multiEventMap: MKMapView!

var latDouble = Double()
var longDouble = Double()
let manager = CLLocationManager()
var receivedArrayOfLats = [Double]()
var receivedArrayOfLongs = [Double]()
var locations = [CLLocationCoordinate2D]()


func locationManager(_ manager: CLLocationManager, didUpdateLocations uLocation: [CLLocation]) {
    let userLocation = uLocation[0]
    let span:MKCoordinateSpan = MKCoordinateSpanMake(0.3, 0.3)
    let usersLocation = userLocation.coordinate
    let region:MKCoordinateRegion = MKCoordinateRegionMake(usersLocation, span)
    multiEventMap.setRegion(region, animated: true)
    manager.distanceFilter = 1000
    self.multiEventMap.showsUserLocation = true
}

func multiPoint() …