ios - 核心位置 didEnterRegion 方法无法处理多个区域

Question

我正在开发一个关于基于位置的提醒的项目。我使用了 CoreLocation 的 didEnterRegion 方法。因此，当我设置输入区域的位置时，我可以收到通知，但每当我想使用 didEnterRegion 方法设置另一个输入位置时，它只会看到第一个位置。无法为第二个位置调用该方法。你能帮我吗？

这是我的代码:

import UIKit
import CoreLocation
import MapKit


class ViewController: UIViewController,CLLocationManagerDelegate {

    var locationManager = CLLocationManager()


    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        let latitude1: CLLocationDegrees = 78.98
        let longitude1: CLLocationDegrees = 90.09
        let center1: CLLocationCoordinate2D = CLLocationCoordinate2DMake(latitude1, longitude1)
        let radius1: CLLocationDistance = CLLocationDistance(100.0)
        let identifier1: String = "Notre Dame"

        let currRegion1 = CLCircularRegion(center: center1, radius: radius1, identifier: identifier1)

        let latitude: CLLocationDegrees = 20.2020
        let longitude: CLLocationDegrees = 2.2945
        let center: CLLocationCoordinate2D = CLLocationCoordinate2DMake(latitude, longitude)
        let radius: CLLocationDistance = CLLocationDistance(100.0)
        let identifier: String = "Notre Dame"

        let currRegion  = CLCircularRegion(center: center, radius: radius, identifier: identifier)

        locationManager.distanceFilter = 10
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        currRegion1.notifyOnEntry = true
        currRegion.notifyOnEntry = true

        locationManager.delegate=self
        locationManager.requestAlwaysAuthorization()
        locationManager.startMonitoring(for: currRegion1)
        locationManager.startMonitoring(for: currRegion)
        locationManager.startUpdatingLocation()
    }

    func locationManager(_ manager: CLLocationManager, didEnterRegion region: CLRegion) {
        if region is CLCircularRegion {
            handleEvent(forRegion: region)
        }
    }

    func handleEvent(forRegion region: CLRegion!) {
        print("Geofence triggered!")
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

Answer 1

官方文档:

You must call this method once for each region you want to monitor. If an existing region with the same identifier is already being monitored by the app, the old region is replaced by the new one.

因此请使用不同的标识符:

//...
        let identifier1: String = "Notre Dame1"
//...
        let identifier: String = "Notre Dame2"
//...