I have a MKAnnotationView with an image subview.
I try to add an UITapGestureRecognizer to it but there is no response
var tapGestureRecognizer = UITapGestureRecognizer(target: self, action: "annotationClicked:")
imageView.userInteractionEnabled = true
imageView.addGestureRecognizer(tapGestureRecognizer)
pinView.addSubview(imageView)
pinView.bringSubviewToFront(imageView)
I'm afraid I have no idea why
To react on the tap of an annotation view (leftCalloutAccessoryView or rightCalloutAccessoryView) you have to create the view as a descendant of UIControl. Then you can implement the calloutAccessoryControlTapped method of the MKMapViewDelegate protocol. No need to use a gesture recognizer.
Here is a code snipped which adds a button as a callout accessory to a pinAnnotation:
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if annotation is PinAnnotation {
let pinAnnotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "myPin")
pinAnnotationView.pinColor = .Purple
pinAnnotationView.draggable = true
pinAnnotationView.canShowCallout = true
pinAnnotationView.animatesDrop = true
// button as callout accessory
let deleteButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
deleteButton.frame.size.width = 44
deleteButton.frame.size.height = 44
deleteButton.backgroundColor = UIColor.redColor()
deleteButton.setImage(UIImage(named: "trash"), forState: .Normal)
pinAnnotationView.leftCalloutAccessoryView = deleteButton
return pinAnnotationView
}
return nil
}
func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
if let annotation = view.annotation as? PinAnnotation {
self.mapView.removeAnnotation(annotation)
}
}
Related
I am very new to swift (coming from python) I am struggling with creating a MKAnnotationView. I followed a tutorial by ray wenderlich but the code appears to be outdated. The function call does not seem to work or produce the "i" intended to be in the annotation of the pin. Here is the code I am currently using:
import MapKit
extension ViewController: MKMapViewDelegate {
// 1
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if let annotation = annotation as? Artwork {
let identifier = "pin"
var view: MKPinAnnotationView
if let dequeuedView = MapView.dequeueReusableAnnotationView(withIdentifier: identifier)
as? MKPinAnnotationView { // 2
dequeuedView.annotation = annotation
view = dequeuedView
} else {
// 3
view = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
view.canShowCallout = true
view.calloutOffset = CGPoint(x: -5, y: 5)
let button = UIButton(type:.detailDisclosure)
view.rightCalloutAccessoryView = button as UIView
}
return view
}
return nil
}
}
I am running Xcode 8.1, any help will be greatly appreciated.
Am using Xcode 8.1 and Swift 3.0 . For Some reason Delegate methods are not firing until you set delegate in storyboard:
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView?
{
if annotation is MKUserLocation {return nil}
let reuseId = "pin"
var pinView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseId) as? MKPinAnnotationView
if pinView == nil {
pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
pinView!.canShowCallout = true
pinView!.animatesDrop = true
let calloutButton = UIButton(type: .DetailDisclosure)
pinView!.rightCalloutAccessoryView = calloutButton
pinView!.sizeToFit()
}
else {
pinView!.annotation = annotation
}
return pinView
}
for button Action
func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
if control == view.rightCalloutAccessoryView {
print("button tapped")
}
}
I am attaching sample project for your issue
Map Sample Project Swift 3. 0 Xcode 8.1
My calloutAccessoryControlTapped is also called when I just tap on annotation view and this behavior it's right. But how can I detect if the user has tapped on the right accessory view (in my case a detail disclosure button) and not just in the view?
I added a simple check but it doesn't work.
import UIKit
import MapKit
extension MapVC: MKMapViewDelegate, CLLocationManagerDelegate
{
func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl)
{
if control == view.rightCalloutAccessoryView
{
... // enter here even if I tapped on the view annotation and not on button
}
}
}
To achieve it you would need to add target for the right accessory view. You can achieve it by setting button to rightCalloutAccessoryView as shown in the code snippet.
class MapViewController: UIViewController, MKMapViewDelegate {
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
if annotation is Annotation {
let annotationView = AnnotationView(annotation: annotation, reuseIdentifier: "reuseIdentifier")
let rightButton = UIButton(type: .DetailDisclosure)
rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(_:)), forControlEvents: .TouchUpInside)
annotationView.rightCalloutAccessoryView = rightButton
}
return nil
}
func didClickDetailDisclosure(button: UIButton) {
// TODO: Perform action when was clicked on right callout accessory view.
}
}
// Helper classes.
class Annotation: NSObject, MKAnnotation {
var coordinate: CLLocationCoordinate2D
var title: String?
var subtitle: String?
init(coordinate: CLLocationCoordinate2D, title: String, subtitle: String) {
self.coordinate = coordinate
self.title = title
self.subtitle = subtitle
}
}
class AnnotationView: MKAnnotationView {
}
Using UIView and UITapGestureRecognizer instead of UIControl
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "reuseIdentifier")
let gestureView = UIView(frame:CGRect(x: 0,y: 0,width: 20,height: 20))
let gestureRecognizer = UITapGestureRecognizer()
gestureRecognizer.addTarget(self, action: #selector(MapViewController.didClickGestureRecognizer(_:)))
gestureView.addGestureRecognizer(gestureRecognizer)
gestureView.backgroundColor = UIColor.redColor()
annotationView.rightCalloutAccessoryView = gestureView
return annotationView
}
func didClickGestureRecognizer(sender:UITapGestureRecognizer) -> Void {
print("didClickGestureRecognizer")
}
When you click on rightCalloutAccessoryView, only didClickGestureRecognizer will be called,but your calloutAccessoryControlTapped cannot be invoked anyone.
2.If you have a UIControl as rightCalloutAccessoryView,you can tap directly on MKAnnotationView.Otherwise MKAnnotationView cannot be tapped.
Both your selector and calloutAccessoryControlTapped will be called when you tap rightCalloutAccessoryView or tap directly on MKAnnotationView
3.If you have a UIControl as leftCalloutAccessoryView,both your selector and calloutAccessoryControlTapped will be called when you tapped on it.
4.Since iOS 9,you can has a detailCalloutAccessoryView in your MKAnnotationView.Only your selector will be called when you tapped on it.
5.Also you can create your own custom MKAnnotationView,and change its behaviors.
I have a map with annotations, after clicking the pin, the callout shows with title of annotation and a disclosure button. When I tap button the segue is triggered and I move to another view. How to determine what annotation was clicked, or pass the title to another view.
func mapView(mapView: MKMapView!,
viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if annotation is MKUserLocation{
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 calloutButton = UIButton.buttonWithType(.DetailDisclosure) as UIButton
pinView!.rightCalloutAccessoryView = calloutButton
} else {
pinView!.annotation = annotation
}
return pinView!
}
func mapView(mapView: MKMapView!, annotationView: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
if control == annotationView.rightCalloutAccessoryView {
performSegueWithIdentifier("Detail", sender: self)
}
}
Thanks
You can use MKAnnotation title of annotation property for finding the pins if annotation title is different
annotationView.annotation.title
return String.Compare String to differenciate.
or
Use tag property in pinview
pinView!.tag //set tag for each pin in `viewForAnnotation` method
In
func mapView(mapView: MKMapView!, annotationView: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
//get tag here
if(annotationView.tag == 0){
//Do for 0 pin
}
if control == annotationView.rightCalloutAccessoryView {
performSegueWithIdentifier("Detail", sender: self)
}
}
Try saving the title to you the NSUserDefaults then grabbing that object in the new view. This is the method I use.
func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
if control == view.rightCalloutAccessoryView{
println(view.annotation.title) // annotation's title
let title = view.annotation.title
NSUserDefaults.standardUserDefaults().setObject(title, forKey: "Title")
var InfoView = self.storyboard?.instantiateViewControllerWithIdentifier("Spot") as! UIViewController
Once you have saved the title to the NSUserDefaults you can simply grab the object in the new "InfoView or whatever you are calling it" like this let spotTitle = NSUserDefaults.standardUserDefaults().objectForKey("SpotTitle") as! String
Hope this helps
I've created a MKMapView which contains several MKPointAnnotations on the map. When the user clicks the UIButton in the view I would like to print the title in the log. How can I do that? So far I have this:
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 = .Purple
var rightButton: AnyObject! = UIButton.buttonWithType(UIButtonType.DetailDisclosure)
//MapPointAnnotation *point = (MapPointAnnotation*)pinView.annotation;
//rightButton.venue = point.venue;
rightButton.titleForState(UIControlState.Normal)
rightButton.addTarget(self, action: "rightButtonTapped:", forControlEvents: UIControlEvents.TouchUpInside)
pinView!.rightCalloutAccessoryView = rightButton as UIView
}
else {
pinView!.annotation = annotation
}
return pinView
}
func rightButtonTapped(sender: AnyObject) {
}
In the custom rightButtonTapped method, an easy and reliable way to get a reference to the annotation that was tapped is to use the map view's selectedAnnotations array:
func rightButtonTapped(sender: AnyObject) {
if self.mapView.selectedAnnotations?.count == 0 {
//no annotation selected
return;
}
if let ann = self.mapView.selectedAnnotations[0] as? MKAnnotation {
println("\(ann.title!)")
}
}
(Even though selectedAnnotations is an array, the map view only allows one annotation to be "selected" at a time so the currently selected annotation is always at index 0.)
However, a better way than using a custom button method is to use the map view's calloutAccessoryControlTapped delegate method. The delegate method passes you a reference to the annotation view that was tapped from which you can easily get the underlying annotation.
To use the delegate method, remove the addTarget line for your custom method:
//Do NOT call addTarget if you want to use the calloutAccessoryControlTapped
//delegate method instead of a custom button method.
//rightButton.addTarget(self, action: "rightButtonTapped:", forControlEvents: UIControlEvents.TouchUpInside)
and then implement the delegate method instead of your custom button method:
func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
println("\(view.annotation.title!)")
}
I have a custom MKPinAnnotationView created as so:
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 = false
pinView!.animatesDrop = true
pinView!.pinColor = .Red
pinView!.draggable = true;
} else {
pinView!.annotation = annotation
}
return pinView
}
Then I add a subview to it later with a button like this:
func mapView(mapView: MKMapView!, didSelectAnnotationView view: MKAnnotationView!) {
view.addSubview(confirm)
}
The problem is that the button inside the subview is not responsive at all. What could be causing that? I already tried playing around with userInteraction enabled.
Thanks
Not sure if this fits or helps but in my case I where I have similar code I set
pinView!.canShowCallout = true
and then if you want a simple way to catch the button clicks I put a func inside of my ViewContriller:
func buttonClicked (sender : UIButton!) {
println("Button Clicked")
}
It sounds like you want to do something a bit different though.
Opps.. in previous answer I forgot that I added the button just above the
return pinView
....
let button : UIButton = UIButton.buttonWithType(UIButtonType.DetailDisclosure) as UIButton
button.addTarget(self, action: "buttonClicked:", forControlEvents: UIControlEvents.TouchUpInside)
pinView!.rightCalloutAccessoryView = button
return pinView
Now the buttonClicked func can catch the callout.