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使用 MapKit 和 Swift，我试图显示一些注释，每个注释都有一个唯一的图像显示在 leftCalloutAccessoryView 中。我能够显示具有不同标题和副标题的注释；但是，为每个注释显示的图像是相同的图像 - 我无法弄清楚如何使每个图像都独一无二。非常感谢任何和所有的反馈/指导，以使其发挥作用。下面的代码（ps我知道我已经对图像进行了硬编码；我不确定如何遍历每个注释以显示适当的图像）：

override func viewDidLoad() {
    super.viewDidLoad()

    mySearch.delegate = self
    theMapView.delegate = self

    var latAustin:CLLocationDegrees = 30.274751
    var lngAustin:CLLocationDegrees = -97.739141

    var latAustinDelta:CLLocationDegrees = 0.1
    var lngAustinDelta:CLLocationDegrees = 0.1

    var theSpan:MKCoordinateSpan = MKCoordinateSpanMake(latAustinDelta, lngAustinDelta)
    var austinLocation:CLLocationCoordinate2D = CLLocationCoordinate2DMake(latAustin, lngAustin)
    var theRegion:MKCoordinateRegion = MKCoordinateRegionMake(austinLocation, theSpan)

    theMapView.setRegion(theRegion, animated: true)
    //        println(theMapView.userLocation.coordinate.latitude)
    //        println(theMapView.userLocation.coordinate.longitude)

    for var i = 0; i < politicians.count; i++ {
        var politician = MKPointAnnotation()

        var politicianTotalFunding:String = politicians[i]["totalFunding"]! as String

        politician.coordinate = CLLocationCoordinate2DMake(politiciansCoords[i]["lat"]! as CLLocationDegrees, politiciansCoords[i]["lng"]! as CLLocationDegrees)
        politician.title = politicians[i]["name"]! as String
        politician.subtitle = "Total Funding: \(politicianTotalFunding)"

        theMapView.addAnnotation(politician)
    }
}


// Delegate method called each time an annotation appears in the visible window
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {

    if annotation is MKUserLocation {
        //return nil so map view draws "blue dot" for standard user location
        return nil
    }

    let reuseId = "pin"

    var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseId) as? MKPinAnnotationView
    if pinView == nil {
        pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
        pinView!.canShowCallout = true
        pinView!.animatesDrop = true
        pinView!.pinColor = .Red

        var imageview = UIImageView(frame: CGRectMake(0, 0, 45, 45))
        imageview.image = UIImage(named: politicians[0]["photo"])
        pinView!.leftCalloutAccessoryView = imageview

        pinView!.rightCalloutAccessoryView = UIButton.buttonWithType(.DetailDisclosure) as UIButton
    } else {
        pinView!.annotation = annotation
    }
    return pinView
}

再次感谢您的所有帮助！

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1 回答 1

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您需要创建自定义 MKPointAnnotation 类，然后添加这些注释。当调用视图时，您可以使用 MKPointAnnotation 中定义的自定义变量作为图像。

于 2015-04-30T21:41:37.990 回答