【发布时间】：2017-04-21 13:14:21
【问题描述】：
我正在做一个项目并坚持这部分：当我选择数组 indexpath.row == 0 然后我选择另一个数组时，我希望最后一个数组消失并将新图钉放在地图上。
let annotation1 = MKPointAnnotation()
//SuperMarkets
let SuperMarket = ["Mass SuperMarket", "West Zone SuperMarket", "Home Needs SuperMarket", "E City SuperMarket", "Al Samary SuperMarket", "Cooperative SuperMarket","Al Madina SuperMarket"]
let locationManger1 = CLLocationManager()
var lat = 0.0
var lng = 0.0
//1
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
{
let lat1: CLLocationDegrees = lat
let lng1: CLLocationDegrees = lng
let myLocation1 = CLLocationCoordinate2DMake(lat1,lng1)
let mySpan1:MKCoordinateSpan = MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01)
let region1:MKCoordinateRegion = MKCoordinateRegion(center: myLocation1,span: mySpan1)
self.MapMarket.setRegion(region1, animated: true)
//Stop updating locations
self.locationManger1.stopUpdatingLocation()
//Place a pin for Burj Lhalifa on the map
annotation1.coordinate = myLocation1
annotation1.title = "Dubai"
self.MapMarket.addAnnotation(annotation1)
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
self.locationManger1.delegate = self
self.locationManger1.desiredAccuracy = kCLLocationAccuracyBest
self.locationManger1.requestAlwaysAuthorization()
self.locationManger1.startUpdatingLocation()
self.MapMarket.showsUserLocation = true
if indexPath.row == 0
{
lat = 25.242066
lng = 55.304286
annotation1.subtitle = SuperMarket[0]
}
else if indexPath.row == 1
{
annotation1.subtitle = SuperMarket[1]
lat = 25.257495
lng = 55.296193
}
else if indexPath.row == 2
{
annotation1.subtitle = SuperMarket[2]
lat = 25.257751
lng = 55.298907
}
else if indexPath.row == 3
{
annotation1.subtitle = SuperMarket[3]
lat = 25.270104
lng = 55.320396
}
else if indexPath.row == 4
{
annotation1.subtitle = SuperMarket[4]
lat = 25.269888
lng = 55.303436
}
else if indexPath.row == 5
{
annotation1.subtitle = SuperMarket[5]
lat = 25.251315
lng = 55.333161
}
else if indexPath.row == 6
{
annotation1.subtitle = SuperMarket[6]
lat = 25.280860
lng = 55.350525
}
}
【问题讨论】：
-
我不确定你在问什么。你只需要知道how to remove an annotation吗？
标签： ios swift uitableview mapkit cllocationmanager