MapKit默认缩放

Question

出于某种原因,我的市场不会放大到当地.事实上,无论我改变什么,它都不会改变变焦.我是在代码的错误部分加载它,还是我错过了其他的东西？任何帮助表示赞赏.

我的代码是:

@IBOutlet var here: MKMapView!

var locationManager: CLLocationManager?
var selectedItem: String?
func locationManager
    (manager: CLLocationManager!,didUpdateToLocation newLocation: CLLocation!,
    fromLocation oldLocation: CLLocation!){
        manager.desiredAccuracy = kCLLocationAccuracyBest


        var region = self.here.region as MKCoordinateRegion

        self.here.setRegion(region, animated: true)
        region.span.longitudeDelta = 0.0144927536
        region.span.latitudeDelta = 0.0144927536

}

Answer 1

我相信你需要在设置区域之前设置lat和long.setRegion函数是放大特定部分的函数,缩放级别取决于您的范围.这是一个缩放地图的示例.

let span = MKCoordinateSpanMake(0.075, 0.075)
let region = MKCoordinateRegion(center: CLLocationCoordinate2D(latitude: lat, longitude: long), span: span)
mapView.setRegion(region, animated: true)