蓝点不会出现在 Map 上 . 看来CLLocation管理器和self.mapView.userLocation.coordinate值之间存在一些脱节 .
CLLocation管理器正确返回Apple Campus坐标,但mapView.userLocation.coordinate值为纬度和经度返回0,0 .
我已经调试了几个小时 .
More Information Below:
在viewDidAppear和viewDidLoad中,我将用户的当前位置打印到控制台,如下所示:
print(self.mapView.userLocation.coordinate)
这是在控制台中呈现的输出:
CLLocationCoordinate2D(纬度:0.0,经度:0.0)
This is what my MapViewController looks like:
import UIKit
import CoreLocation
import MapKit
class MapViewController: UIViewController, MKMapViewDelegate {
@IBOutlet weak var mapView: MKMapView!
var manager: CLLocationManager? = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
// map stuff
manager?.delegate = self
manager?.desiredAccuracy = kCLLocationAccuracyBest
self.mapView.delegate = self
// print user's current location to console
print("user location in view did load:")
print(self.mapView.userLocation.coordinate)
}
override func viewDidAppear(_ animated: Bool) {
manager?.requestAlwaysAuthorization()
manager?.startUpdatingLocation()
self.mapView.showsUserLocation = true
self.mapView.userTrackingMode = .follow
// print user's current location to console
print("user location in view did appear:")
print(self.mapView.userLocation.coordinate)
animateMapToUserLocation()
}
}
笔记:
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我已将相关的隐私消息添加到Info.plist文件中 .
-
故事板中的MapView通过实心圆连接到正确的ViewController .
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MapViewController实例化如下:
let storyboard = UIStoryboard(名称:“Main”,bundle:Bundle.main)让mapVC = storyboard.instantiateViewController(withIdentifier:“MapVC”)为? MapViewController self.present(mapVC!,animated:true,completion:nil)
2 回答
你实现了viewForAnnotation函数吗?你在检查你没有为MKUserLocation绘制(或没有绘制)不同类型的引脚吗?
例如
还可以检查设置>隐私>位置服务>您的应用
我的控制流程已关闭 . 在应用有权检索用户位置之前, Map 将呈现 . 它现在正在运作 .