Dan E Dan E - 7 months ago 45
Swift Question

Can i use the same map with the same location in another View Controller?

In my app the user can search for a location and it adds a pin. I want a next button to go to another view controller and show the exact same map but in a smaller version. How can I move the exact same map to another view controller?

import UIKit
import MapKit

protocol HandleMapSearch {
func dropPinZoomIn(placemark:MKPlacemark)
}

class ViewController: UIViewController {
let locationManager = CLLocationManager()
var resultSearchController:UISearchController? = nil
var selectedPin:MKPlacemark? = nil


@IBOutlet weak var mapView: MKMapView!

override func viewDidLoad() {


super.viewDidLoad()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestWhenInUseAuthorization()
locationManager.requestLocation()

//
let locationSearchTable = storyboard!.instantiateViewControllerWithIdentifier("LocationSearchTable") as! LocationSearchTable
resultSearchController = UISearchController(searchResultsController: locationSearchTable)
resultSearchController?.searchResultsUpdater = locationSearchTable
//
let searchBar = resultSearchController!.searchBar
searchBar.sizeToFit()
searchBar.placeholder = "Search for places"
navigationItem.titleView = resultSearchController?.searchBar
//
resultSearchController?.hidesNavigationBarDuringPresentation = false
resultSearchController?.dimsBackgroundDuringPresentation = true
definesPresentationContext = true
//
locationSearchTable.mapView = mapView
//
locationSearchTable.handleMapSearchDelegate = self
//
let button = UIButton(type: UIButtonType.System) as UIButton
button.frame = CGRectMake(100, 100, 100, 50)
button.backgroundColor = UIColor.greenColor()
button.setTitle("Button", forState: UIControlState.Normal)
button.addTarget(self, action: Selector("Action:"), forControlEvents: UIControlEvents.TouchUpInside)
self.view.addSubview(button)

}

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



}

extension ViewController : CLLocationManagerDelegate {
func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
if status == .AuthorizedWhenInUse {
locationManager.requestLocation()
}
}

func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
if let location = locations.first {
let span = MKCoordinateSpanMake(0.05, 0.05)
let region = MKCoordinateRegion(center: location.coordinate, span: span)
mapView.setRegion(region, animated: true)
}
}
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
print("error:: \(error)")
}
}

extension ViewController: HandleMapSearch {
func dropPinZoomIn(placemark:MKPlacemark){
// cache the pin
selectedPin = placemark
// clear existing pins
mapView.removeAnnotations(mapView.annotations)
let annotation = MKPointAnnotation()
annotation.coordinate = placemark.coordinate
annotation.title = placemark.name
if let city = placemark.locality,
let state = placemark.administrativeArea {
annotation.subtitle = "\(city) \(state)"
}
mapView.addAnnotation(annotation)
let span = MKCoordinateSpanMake(0.05, 0.05)
let region = MKCoordinateRegionMake(placemark.coordinate, span)
mapView.setRegion(region, animated: true)

}
}
extension ViewController : MKMapViewDelegate {

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
pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
pinView?.pinTintColor = UIColor.orangeColor()
pinView?.canShowCallout = true
pinView?.rightCalloutAccessoryView = UIButton(type: UIButtonType.DetailDisclosure) as UIButton
return pinView
}
func mapView(mapView: MKMapView, annotationView: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {

if control == annotationView.rightCalloutAccessoryView {
print("Disclosure Pressed!")
}
}



}

Answer

you can pass annotation or lat long to another view controller while performing segue or push new controller. If you are using segue then you can use prepare for segue method.

Second thing you can make a custom class for mapview. and can put some properties in it like annotation or lat long then create object of this class and set this property so according that properties this class return map view (make method accordingly). you can use class in many viewcontroller not only in just two.

Update as per comment :

refer this link to know how to push new view controller. and refer this storyboard segue tutorial. Actually it concepts and not possible to explain here everything if you have some error in code then i can solve here but for learn whole concepts you should follows different tutorials and notes. do research. google it you will find many links.

hope this will help :)