DidSelectAnnotationView注释点击无法正确响应

Question

我有自定义注释，我有来自MKPointAnnotation的subClass。添加它们正常工作。我还需要检测Annotation select方法。问题是，当我点击注释时，它首先没有点击“DidSelectAnnotationView”。如果我点击另一个注释，如userLocation注释，然后“DidSelectAnnotationView”命中。并且在调试时显示注释视图的坐标不是用户位置，而是我之前点击的注释。并且在此之后发生同样的情况，当我点击我的自定义注释它命中方法时，方法的坐标不是userLocation。我已经添加了我的代码，有人可能会在我错过了这些内容的地方。

override public MKAnnotationView GetViewForAnnotation(MKMapView mapView, IMKAnnotation annotation)
    {
        string resuseId = "customAnnotation";

        MKAnnotationView annotationView = mapView.DequeueReusableAnnotation(resuseId);

        if (ThisIsTheCurrentLocation(mapView, annotation))
        {
            return null;
        }

        if (annotationView == null)
        {
            if (annotation is CustomAnnotation)
            {

                switch (CustomAnnotation.MarkerType)
                {
                    case MyMarkerType.Note:
                        annotationView = new MKAnnotationView(annotation, resuseId);
                        annotationView.Image = UIImage.FromBundle("Message");
                        annotationView.CanShowCallout = false;
                        annotationView.Enabled = true;
                        break;
                    case MyMarkerType.Photo:
                        annotationView = new MKAnnotationView(annotation, resuseId);
                        annotationView.Image = UIImage.FromBundle("Photo");
                        annotationView.CanShowCallout = false;
                        break;
                    case MyMarkerType.Story:
                        annotationView = new MKAnnotationView(annotation, resuseId);
                        var Img = UIImage.FromBundle("Story");
                        annotationView.CanShowCallout = false;
                        break;
                    case MyMarkerType.Custom:
                        annotationView = new MKAnnotationView(annotation, resuseId);
                        //using (var data = NSData.FromArray(CustomAnnotation.WayPoint.Image))
                        //{
                        //    var image = UIImage.LoadFromData(data);
                        //        annotationView.Image = image;
                        //}
                        NSData data = NSData.FromArray(CustomAnnotation.WayPoint.Image);
                        UIImage image = UIImage.LoadFromData(data);
                       // UIImage finalImage = image.MaxResizeImage(21f, 20f);
                        annotationView.Image = image;
                        annotationView.CanShowCallout = false;
                        break;
                    default:
                        annotationView = new MKAnnotationView(annotation, resuseId);
                        //var imaget = FromUrl(CustomAnnotation.WayPoint.IconUrl);
                        //annotationView.Image = imaget;
                        break;
                }
            }

            else{
                annotationView.Annotation = annotation;
                annotationView.CanShowCallout = false;

                //(annotationView as MKPinAnnotationView).AnimatesDrop = false; // Set to true if you want to animate the pin dropping
                //(annotationView as MKPinAnnotationView).PinTintColor = UIColor.Red;
                annotationView.SetSelected(false, false);
            }

        }

        return annotationView;

    }

还有我的DidSelect方法

public override void DidDeselectAnnotationView(MKMapView mapView, MKAnnotationView view)
    {

        if ( view.Annotation.Coordinate.Latitude == mapView.UserLocation.Coordinate.Latitude){

            return;
        }

        CLLocationCoordinate2D coordinates = view.Annotation.Coordinate;
        mapView.DeselectAnnotation(view.Annotation, false);
        // GetAnnotationClickInfo.Invoke(coordinates);


    }

Answer 1

使用DidSelectAnnotationView方法， 不是DidDeselectAnnotationView。

public override void DidSelectAnnotationView(MKMapView mapView, MKAnnotationView view)

• DidDeselectAnnotationView
• DidSelectAnnotationView

Answer 2

检查你的代码后，我认为在初始化annotationView时有一个错误，你应该把annotationView.Annotation = annotation;放在条件if (annotationView == null)之外。

Mofidy your code :

if (annotationView == null)
{
    if (annotation is CustomAnnotation)
    {
       //custom view logic
    }
    else  //not custom view
    {
        annotationView = new MKPinAnnotationView(annotation, annotationIdentifier);
    }
}
else
{
    annotationView.Annotation = annotation;
}

annotationView.CanShowCallout = false;
//(annotationView as MKPinAnnotationView).AnimatesDrop = false; // Set to true if you want to animate the pin dropping
//(annotationView as MKPinAnnotationView).PinTintColor = UIColor.Red;
annotationView.SetSelected(false, false);