1

我在字典中有 POI：

["_id": "12345ACB", "title": "Some Shop Place", "category": "Shop", "latitude": 12.345677, "longitude": 21.12348], ...

我有添加注释的功能：

func addPlaces() {
    for poi in pois {
        let pin = MKPointAnnotation()
        if let loc = poi["location"] as? NSDictionary {
            pin.coordinate = CLLocationCoordinate2D(latitude: (loc["lat"] as? Double)!, longitude: (loc["lng"] as? Double)!)
        }
        if let cat = poi["_category"] as? NSDictionary {
            pin.subtitle = cat["name"] as? String
        }
        pin.title = poi["title"] as? String
        mapView.addAnnotation(pin)

    }
}

还有一个标注功能：

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
    let info = view.annotation
    let placeName = info?.title
    let placeInfo = info?.subtitle
    let ac = UIAlertController(title: placeName!, message: placeInfo!, preferredStyle: .actionSheet)
    ac.addAction(UIAlertAction(title: "Open", style: .default, handler: { (UIAlertAction) in
        // Here I need POI's _ID
        self.performSegue(withIdentifier: "DealsSegue", sender: self)
    }))
    present(ac, animated: true)
}

那么，在警报行动中，我需要 POI 字典中的 _id 来获取特定（点击）引脚吗？

谢谢

4

1 回答 1

0 
var catId: String? // catId objects in MKPointAnnotation Class

pin.catId = cat["_id"] as? String 
let placeId = info?.catId
let alertStr  =   String(format: "%@ %@", placeId!, placeInfo!,) // Your id and Your message 

let ac = UIAlertController(title: placeName!, message: alertStr, preferredStyle: .actionSheet)
ac.addAction(UIAlertAction(title: "Open", style: .default, handler: { (UIAlertAction) in
    // Here I need POI's _ID
    self.performSegue(withIdentifier: "DealsSegue", sender: self)
}))
于 2017-05-11T12:14:23.990 回答