Showing a new viewController when tapping on a mark on a mapView? - ios

Question

I have a mapView with pins showing users positions, tapping on them I show some info about users and places. I'd like to implement a feature in wich by tapping on those info little panel, I can navigate to another viewController from which
send a personal message via Parse. Even a button could be fine.
this is my mapViwController code
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!)
{
let point = PFGeoPoint(latitude:manager.location.coordinate.latitude, longitude:manager.location.coordinate.longitude)
let location = locations.last as! CLLocation
let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 1, longitudeDelta: 1))
self.mapView.setRegion(region, animated: true)
CLGeocoder().reverseGeocodeLocation(manager.location, completionHandler: {(placemarks, error)->Void in
if (error != nil)
{
println("Error: " + error.localizedDescription)
return
}
if placemarks.count > 0
{
let pm = placemarks[0] as! CLPlacemark
self.displayLocationInfo(pm, point: point)
}
else
{
println("Error with the data.")
}
})
}
func displayLocationInfo(placemark: CLPlacemark, point: PFGeoPoint)
{
self.locationManager.stopUpdatingLocation()
self.createAnnotations(point, address: "\(placemark.locality) \(placemark.administrativeArea) \(placemark.postalCode) \(placemark.country)")
}
func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!)
{
println("Error: " + error.localizedDescription)
}
// MARK: - Create Annotation
func createAnnotations(point: PFGeoPoint, address: String)
{
var query = PFUser.query()
var withinKms = NSUserDefaults.standardUserDefaults().objectForKey("withinKms") as! Double
// query?.whereKey("location", nearGeoPoint: point, withinKms: withinKms) // also withinKilometers if wanted
query?.whereKey("location", nearGeoPoint: point, withinKilometers: withinKms)
query?.limit = 10
query?.findObjectsInBackgroundWithBlock({ (objects, error) -> Void in
if error == nil
{
for(var i = 0; i < objects!.count; i++)
{
let user = objects![i] as! PFUser
var myHomePin = MKPointAnnotation()
let userPoint = user["location"] as! PFGeoPoint
myHomePin.coordinate = CLLocationCoordinate2DMake(userPoint.latitude, userPoint.longitude)
myHomePin.title = user.username
myHomePin.subtitle = address
self.mapView.addAnnotation(myHomePin)
}
}
else
{
println("Error: " + error!.localizedDescription)
}
})
}
Anbu's Answer
#IBOutlet weak var mapView: MKMapView!
//************************************************
func mapView(mapView: mapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
println("disclosure pressed: \(view.annotation.title)")
// do your stuff here
// #IBAction func startChat(sender: UIButton)
// add your segue
if control == annotationView.rightCalloutAccessoryView {
self.performSegueWithIdentifier("nextViewController", sender: self)
}
}
//************************************************

Answer 1

receive mapView delegate callback method
//if you pressed the annotation view the following method is called
func mapView(mapView: MKMapView!, didSelectAnnotationView view: MKAnnotationView!)
// if you press the calloutButton the following method is called
func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!)
for example
func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
println("disclosure pressed: \(view.annotation.title)")
// do your stuff here
// add your segue
if control == annotationView.rightCalloutAccessoryView {
self.performSegueWithIdentifier("nextViewController", sender: self)
}
}

Answer 2

Please try with
annotationView.canShowCallout = YES;
and implement the method in below delegate:
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(#"calloutAccessoryControlTapped: annotation = %#", view.annotation);
MyDetailViewController *detailView=[[MyDetailViewController alloc] initWithNibName:#"MyDetailViewController" bundle:nil];
//here, can set annotation info in some property of detailView
[[self navigationController] pushViewController:detailView animated:YES];
[detailView release];
}