iOS Long Press Annotation on a Map

[joaogfmoreira]

Hello guys!

I have been trying to add an annotation to a Map View by long pressing on it for two seconds but I can't get it to work. I have attached two files containing my code. They include a set annotation in New York and the part of the long press, which i can't finish.
Please ignore the comments,
Thanks!

//
//  ViewController.swift
//  Learning Maps
//
//  Created by João Moreira on 10/03/15.
//  Copyright (c) 2015 JoaoMoreira. All rights reserved.
//

import UIKit

import MapKit

class ViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {

    @IBOutlet var myMap: MKMapView!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        var latitude:CLLocationDegrees = 40.748712         
        
        var longitude:CLLocationDegrees = -73.985728        

        var latDelta:CLLocationDegrees = 0.01        
        
        var lonDelta:CLLocationDegrees = 0.01    

        var span:MKCoordinateSpan = MKCoordinateSpanMake(latDelta, lonDelta)  
        
        var location:CLLocationCoordinate2D = CLLocationCoordinate2DMake(latitude, longitude)
        
        var region:MKCoordinateRegion = MKCoordinateRegionMake(location, span)  
        
        myMap.setRegion(region, animated: true)

        var annotation = MKPointAnnotation()
        
        annotation.coordinate = location
        
        annotation.title = "Statue of liberty"
        
        annotation.subtitle = "One day I'll go here..."
        
        myMap.addAnnotation(annotation)

        var uilpgr = UILongPressGestureRecognizer(target: self, action: "action:")  
                                                                                    
        uilpgr.minimumPressDuration = 2.0
        
        myMap.addGestureRecognizer(uilpgr)

    }

func action(gestureRecognizer:UIGestureRecognizer) {        
        
        println("test")
        
        var touchPoint = gestureRecognizer.locationInView(self.myMap)  
        
        var newCoordinate:CLLocationCoordinate2D = myMap.convertPoint(touchPoint, toCoordinateFromView: self.myMap)
        
        var newAnnotation = MKPointAnnotation()
        
        newAnnotation.coordinate = newCoordinate
        
        newAnnotation.title = "I will come here"
        
        newAnnotation.subtitle = "for sure"

        myMap.addAnnotation(newAnnotation)
        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

 

[dejo]

I have attached two files containing my code.

Can you please copy-and-paste the code snippets (put them inside

 tags) into a post rather than attaching them as images? That's easier for us to deal with.

 

[joaogfmoreira]

Can you please copy-and-paste the code snippets (put them inside

 tags) into a post rather than attaching them as images? That's easier for us to deal with.[/QUOTE]

Done!

 

[dejo]

Done!

Alright, thanks!

Now, with that out of the way, let's get to the issue: When you say "it doesn't work", can you be more specific? What do you expect to happen and what happens instead? What debugging, if any, have you done?

 

[joaogfmoreira]

Alright, thanks!

Now, with that out of the way, let's get to the issue: When you say "it doesn't work", can you be more specific? What do you expect to happen and what happens instead? What debugging, if any, have you done?

Well, I want it to add a Pin in the place in the map where I do the long pressing. When i run the simulator, the map opens at New York and if I try to long press it, it will just do nothing. The long press is not working at all. Even the "test" that I printed to the log does not work.

 

[Ubuntu]

Well, I want it to add a Pin in the place in the map where I do the long pressing. When i run the simulator, the map opens at New York and if I try to long press it, it will just do nothing. The long press is not working at all. Even the "test" that I printed to the log does not work.

This is going to be obvious but can you confirm you're pressing for at least two seconds? Does it work if you comment out the minimumPressDuration line?

 

[joaogfmoreira]

This is going to be obvious but can you confirm you're pressing for at least two seconds? Does it work if you comment out the minimumPressDuration line?

Yes i clicked more than 2 seconds! Also tried your suggestion on commenting the minimumPressDuration line but still it does nothing.

 

[Ubuntu]

Yes i clicked more than 2 seconds! Also tried your suggestion on commenting the minimumPressDuration line but still it does nothing.

I've made a new project with your sample code and it works fine. Try placing a breakpoint in the action method and then doing the long press gesture. Does a long press trigger the breakpoint?

 

[joaogfmoreira]

I've made a new project with your sample code and it works fine. Try placing a breakpoint in the action method and then doing the long press gesture. Does a long press trigger the breakpoint?

That fixed it! I don't know what was wrong in the first place. But i placed the breakpoint and the long press was working and than i restarted the app and it was working! Thank you! Sorry for the trouble!

 

[Ubuntu]

That fixed it! I don't know what was wrong in the first place. But i placed the breakpoint and the long press was working and than i restarted the app and it was working! Thank you! Sorry for the trouble!

Not a problem.