I am making a small map type application. I wish to display a popover menu once the button 'morestuff' is clicked, but it does not seem to be appearing.
I have this code so far:
import UIKit
import MapKit
import CoreLocation
class ViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate, UISearchBarDelegate, UIPopoverPresentationControllerDelegate {
var location: CLLocation!
let locationManager = CLLocationManager()
// Map variables
var searchController:UISearchController!
var annotation:MKAnnotation!
var localSearchRequest:MKLocalSearchRequest!
var localSearch:MKLocalSearch!
var localSearchResponse:MKLocalSearchResponse!
var error:NSError!
var pointAnnotation:MKPointAnnotation!
var pinAnnotationView:MKPinAnnotationView!
@IBOutlet weak var mapView: MKMapView!
@IBOutlet weak var segmentedControl: UISegmentedControl!
@IBOutlet weak var showSearchBar: UIBarButtonItem!
@IBOutlet weak var addButton: UIBarButtonItem!
@IBOutlet weak var moreStuff: UIBarButtonItem!
@IBAction func addButton(sender: AnyObject) {
let annotation = MKPointAnnotation()
annotation.coordinate = CLLocationCoordinate2D(latitude: self.mapView.userLocation.coordinate.latitude, longitude: self.mapView.userLocation.coordinate.longitude)
self.mapView.addAnnotation(annotation)
}
@IBAction func showSearchBar(sender: UIBarButtonItem!) {
searchController = UISearchController(searchResultsController: nil)
searchController.hidesNavigationBarDuringPresentation = false
self.searchController.searchBar.delegate = self
presentViewController(searchController, animated: true, completion: nil)
}
@IBAction func refresh(sender: AnyObject) {
self.locationManager.startUpdatingLocation()
}
@IBAction func moreStuff(sender: AnyObject) {
self.performSegueWithIdentifier("showMoreStuff", sender:self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "showMoreStuff"
{
var vc = segue.destinationViewController as! UIViewController
var controller = vc.popoverPresentationController
if controller != nil
{
controller?.delegate = self
}
}
}
func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
return .None
}
@IBAction func segmentedControl(sender: UISegmentedControl!) {
if sender.selectedSegmentIndex == 0{
mapView.mapType = MKMapType.Standard
}
else if sender.selectedSegmentIndex == 1{
mapView.mapType = MKMapType.Satellite
}
else if sender.selectedSegmentIndex == 2{
mapView.mapType = MKMapType.Hybrid
}
}
override func viewDidLoad() {
super.viewDidLoad()
self.locationManager.delegate = self
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
self.locationManager.requestWhenInUseAuthorization()
self.locationManager.startUpdatingLocation()
self.mapView.showsUserLocation = true
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// location delegate methods
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let location = locations.last
let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude)
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01))
self.mapView.setRegion(region, animated: true)
self.locationManager.stopUpdatingLocation()
}
func locationManager(manager: CLLocationManager, didFailWithError error: NSError)
{
print("Error code: " + error.localizedDescription)
}
func searchBarSearchButtonClicked(searchBar: UISearchBar){
searchBar.resignFirstResponder()
dismissViewControllerAnimated(true, completion: nil)
if self.mapView.annotations.count != 0{
annotation = self.mapView.annotations[0]
self.mapView.removeAnnotation(annotation)
}
localSearchRequest = MKLocalSearchRequest()
localSearchRequest.naturalLanguageQuery = searchBar.text
localSearch = MKLocalSearch(request: localSearchRequest)
localSearch.startWithCompletionHandler { (localSearchResponse, error) -> Void in
if localSearchResponse == nil{
let alertController = UIAlertController(title: nil, message: "No Such Place", preferredStyle: UIAlertControllerStyle.Alert)
alertController.addAction(UIAlertAction(title: "Dismiss", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alertController, animated: true, completion: nil)
return
}
self.pointAnnotation = MKPointAnnotation()
self.pointAnnotation.title = searchBar.text
self.pointAnnotation.coordinate = CLLocationCoordinate2D(latitude: localSearchResponse!.boundingRegion.center.latitude, longitude: localSearchResponse!.boundingRegion.center.longitude)
self.pinAnnotationView = MKPinAnnotationView(annotation: self.pointAnnotation, reuseIdentifier: nil)
self.mapView.centerCoordinate = self.pointAnnotation.coordinate
self.mapView.addAnnotation(self.pinAnnotationView.annotation!)
}
}
}
Any help is appreciated :) I am trying to learn the Swift language myself
Firstly your UIButton should be linked to the popover's view controller using the Present As Popover segue type.
Than add delegate method of the UIPopoverPresentationControllerDelegate :
- (UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller {
return UIModalPresentationNone;
}
Swift version :
func adaptivePresentationStyleForPresentationController(PC: UIPresentationController!) -> UIModalPresentationStyle {
// This *forces* a popover to be displayed on the iPhone
return .None
}
After that add prepareForSegue:sender: to you're code
if ([segue.identifier isEqualToString:@"showMoreStuff"]) {
UIViewController *dvc = segue.destinationViewController;
UIPopoverPresentationController *controller = dvc.popoverPresentationController;
if (controller) {
controller.delegate = self;
}
}