How to Make a Custom Mkannotationview with Xib

How to make a custom MKAnnotationView with XIB

UPDATED CODE BASED ON Sh-Khan's answer

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {

                //  Don't want to show a custom image if the annotation is the user's location.
                if (annotation is MKUserLocation) {
                    return nil
                } else {

                    let annotationIdentifier = "AnnotationIdentifier"
                    let nibName = "MyAnnotationView"
                    let viewFromNib = Bundle.main.loadNibNamed(nibName, owner: self, options: nil)?.first as! MyAnnotationView
                    var annotationView: MyAnnotationView?

                    // if there is a view to be dequeued, use it for the annotation
                    if let dequeuedAnnotationView = mapView.dequeueReusableAnnotationView(withIdentifier: annotationIdentifier) as? MyAnnotationView {

                        if dequeuedAnnotationView.subviews.isEmpty {
                            dequeuedAnnotationView.addSubview(viewFromNib)
                        }
                        annotationView = dequeuedAnnotationView
                        annotationView?.annotation = annotation
                    } else {

                        // if no views to dequeue, create an Annotation View
                        let av = MyAnnotationView(annotation: annotation, reuseIdentifier: annotationIdentifier)
                        av.addSubview(viewFromNib)
                        annotationView = av     // extend scope to be able to return at the end of the func
                    }

                    // after we manage to create or dequeue the av, configure it
                    if let annotationView = annotationView {
                        annotationView.canShowCallout = true                                    // callout bubble
                        annotationView.rightCalloutAccessoryView = UIButton(type: .detailDisclosure)
                        annotationView.frame = CGRect(x: 0, y: 0, width: 40, height: 40)

                        let customView = annotationView.subviews.first as! MyAnnotationView
                        customView.frame = annotationView.frame
                        customView.textLabel.text = (annotationView.annotation?.title)!
                    }
                    return annotationView
                }
}

How to use a custom XIB for MKAnnotationView?

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {     

        // Don't want to show a custom image if the annotation is the user's location.
        if (annotation is MKUserLocation) {
            return nil
        } else {

            let annotationIdentifier = "AnnotationIdentifier"
            var annotationView: MKPinAnnotationView?                           

            if let dequeuedAnnotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "AnnotationIdentifier") as? MKPinAnnotationView {
                //Here you can setup 
                annotationView = dequeuedAnnotationView
                annotationView?.annotation = annotation
            }

    }

You don't need to initialize in on your own. It uses a custom CollectionViewCells. Try to use this example. (This is a delegate function FYI)

How to add a customView xib as annotation in Ios?

Try to add the object of the nib view to the annotation view like this

 func mapView(_ mapView: MKMapView,viewFor annotation: MKAnnotation) -> MKAnnotationView?
{
    if annotation is MKUserLocation == true
    {

        return nil
    }

    let senderAnnotation = annotation as! MyAnnotation

    let pinReusableIdentifier = senderAnnotation.pinColor.rawValue

    var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: pinReusableIdentifier)

    if annotationView == nil
    {

        annotationView = MKAnnotationView(annotation: senderAnnotation,                                                                                                reuseIdentifier: pinReusableIdentifier)
          annotationView!.canShowCallout = true

    }

  let customView = (Bundle.main.loadNibNamed("directOrderView", owner: self, options: nil))?[0] as! directOrderView;

  var calloutViewFrame = customView.frame;
  calloutViewFrame.origin = CGPoint(x:-calloutViewFrame.size.width/2 + 30,y: -calloutViewFrame.size.height);
  customView.frame = calloutViewFrame;

  annotationView?.addSubview(customView)

  return annotationView

  }

Custom callout view with xib

In didSelectAnnotationView load xib from bundle and add subview to the annotation view. here CustomXibCallout is xib file and CustomCalloutView is MKAnnotationView.

func mapView(mapView: MKMapView, didSelectAnnotationView view: MKAnnotationView) {
    if view.annotation!.isKindOfClass(MKUserLocation){
        return
    }

    //Custom xib
    let customView = (NSBundle.mainBundle().loadNibNamed("CustomXibCallout", owner: self, options: nil))[0] as! CustomCalloutView;

    let calloutViewFrame = customView.frame;

    customView.frame = CGRect(x: -calloutViewFrame.size.width/2.23, y: -calloutViewFrame.size.height-7, width: 315, height: 200)

    view.addSubview(customView)
}

in didDeselectAnnotationView remove the added view

func mapView(mapView: MKMapView, didDeselectAnnotationView view: MKAnnotationView)
{
    for childView:AnyObject in view.subviews{
        childView.removeFromSuperview();
    }
}

Example for CustomCallout

How to set .xib interface as a custom callout view?

you can show custom callout view like this in Swift.

func mapView(mapView: MKMapView!, didSelectAnnotationView view: MKPinAnnotationView!)
{
    if view.annotation.isKindOfClass(MKUserLocation){
        return
    }

    var customView = (NSBundle.mainBundle().loadNibNamed("SubView", owner: self, options: nil))[0] as CustomSubView;

    var calloutViewFrame = customView.frame;
    calloutViewFrame.origin = CGPointMake(-calloutViewFrame.size.width/2 + 15, -calloutViewFrame.size.height);
    customView.frame = calloutViewFrame;

    let cpa = view.annotation as CustomPointAnnotation
   //You can add set vlaues for  here
   //cpa.title
   //cpa.postCode
   //cpa.street

    view.addSubview(customView)

    //zoom map to show callout
    let spanX = 0.0000000000000001
    let spanY = 0.0000000000000001

    var newRegion = MKCoordinateRegion(center:cpa.coordinate, span: MKCoordinateSpanMake(spanX, spanY))
    self.map?.setRegion(newRegion, animated: true)
   }

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