I have made it with Scale to fill aspect for ImageView and it look perfect. Closing.

@Claude31 - with UICollectionViewDelegateFlowLayout I have managed to do that: It looks much better, but photos arent the same size, as you can see on the screenshot.

Ok, so I have added this in ViewController.swift:  override func viewDidLoad() {         super.viewDidLoad()         collectionView.delegate = self         collectionView.dataSource = self         collectionView.collectionViewLayout = UICollectionViewFlowLayout()             } extension TrasyOpisyController: UICollectionViewDelegateFlowLayout{     func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {         return CGSize(width: 700, height: 700)     } } And it looks much better: Now I need to realize how to center it to be in the center of VC, like here:

Ok, I moved on a little bit: This is my Collection View Size Inspector: And Collection View Flow Layout: And CollectionViewCell:

Ok, so far I got this, and the layout is ride off: import UIKit class TrasyOpisyController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource { func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { return nazwy_modernizm.count } func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "ModernizmCollectionViewCell", for: indexPath as IndexPath) as! ModernizmCollectionViewCell cell.imageCell.image=self.images_modernizm[indexPath .row] cell.title.text=self.names_modernizm[indexPath .row] cell.subTitle.text=self.opisy_modernizm[indexPath .row] //cell.locationLabel.text=self.czas_rower[indexPath .row] return cell } @IBOutlet weak var collectionView: UICollectionView! func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath){ collectionView.deselectItem(at: indexPath, animated: true) //this does not work } let names_modernizm = [("One"),("Two"),("Three")] let opisy_modernizm = [("one"),("two"),("three")] let images_modernizm = [UIImage(named: "one.jpeg"), UIImage(named: "two.jpeg"), UIImage(named: "three.jpeg")] override func viewDidLoad() { super.viewDidLoad() collectionView.delegate = self collectionView.dataSource = self // collectionView.collectionViewLayout = UICollectionViewFlowLayout() } } //extension ViewController: UICollectionViewDelegateFlowLayout{ // func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize { // return CGSize(width: 10, height: 10) // } //} // I was trying with this, but it gets worst And ModernizmCollectionViewCell: import UIKit class ModernizmCollectionViewCell: UICollectionViewCell { @IBOutlet weak var imageCell: UIImageView! @IBOutlet weak var iconLabel: UIImageView! @IBOutlet weak var title: UILabel! @IBOutlet weak var subTitle: UILabel! @IBOutlet weak var locationLabel: UILabel! override func awakeFromNib() { super.awakeFromNib() // Initialization code } } In storyboard it looks fine, but when I run the app everything rides off:

@Claude31, for now I think Im doing fine with the collectionView. I will put a tick, when I'll finish. How can I input distance from some point in the label? I have locationLabel in this ViewController (In the cell in CollectionView), but I would like to input the distance in kilometers between user current location and from the point in Struct, which is in another ViewController called simply 'ViewController': This is this struct from another ViewController:     struct Place {       let name: String       let description: String       let typ: String       let lattitude: CLLocationDegrees       let longtitude: CLLocationDegrees         var coordinate: CLLocationCoordinate2D {             .init(latitude: lattitude, longitude: longtitude)         }     }     let places = [Place(name: "one", description: "desc_one", typ: "one", lattitude: 81.108187, longtitude: 37.075812),                    Place(name: "two", description: "two", typ: "two", lattitude: 31.076187, longtitude: 87.000563),                    Place(name: "Three", description: "three", typ: "three", lattitude: 31.096688, longtitude: 26.991312),

I have the same issue here. On Xcode an in Simulator. Seems to a be a bug in new software.

@Claude31 Sorry, I think I misled you. I did not added the main class to the question. Thats why your code can't work that way. Here is the correct code: class AnnotationButton: UIButton {     var annotation: MKPointAnnotation? } class ViewController: UIViewController, MKMapViewDelegate {     func findPlace(_ places: [Place]) {       for place in places {         let annotations = MKPointAnnotation()         annotations.title = place.name         annotations.subtitle = place.description         annotations.coordinate = CLLocationCoordinate2D(latitude:           place.lattitude, longitude: place.longtitude)         mapView.addAnnotation(annotations)       }     } func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {         guard !(annotation is MKUserLocation) else { return nil }         let identifier = "identifier"         guard let annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier, for: annotation) as? MKMarkerAnnotationView else { return nil } let leftButton = AnnotationButton(frame: CGRect(           origin: CGPoint.zero,           size: CGSize(width: 25, height: 25)))         leftButton.setBackgroundImage(#imageLiteral(resourceName: "nav"), for: .normal)         annotationView.leftCalloutAccessoryView = leftButton         leftButton.addTarget(self, action: #selector(didClickDetailDisclosureNavigation(button:)), for: .touchUpInside)         if let pointAnnotation = annotation as? MKPointAnnotation {                     leftButton.annotation = pointAnnotation                 }     @objc func didClickDetailDisclosureNavigation(button: AnnotationButton) {             let launchOptions = [MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDriving]             if let mapItem = button.annotation?.mapItem {                     mapItem.openInMaps(launchOptions: launchOptions)     }     } extension MKPointAnnotation {     var mapItem: MKMapItem {         let placemark = MKPlacemark(coordinate: self.coordinate)         return MKMapItem(placemark: placemark)     } }

@OOPer I've got Value of type 'UIButton' has no member 'annotation' when I try to add: if let pointAnnotation = annotation as? MKPointAnnotation {                     leftButton.annotation = pointAnnotation                 }

@OOPer I mean permission to use user location. When user click 'never' while the app is starting, I would like to show an alert after clicking the myLocationButtonTapped that loacation services for this app are off and user need to take an action in settings o turn it on.

@Claude31 one more question - how not to display enumerate titles? Now it shows on the map number and title: 0-One ; 1-Twoetc. I just Want to display names, as before. The names are not dynamic, so maybe better option is to use titles withou "tags"?

Ok, I found a problem - I've added rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside) before the switch, so program was compiling just this one instead of others in switch. Thank you @Claude31

@Claude31 Ok, let me explain: This one works with couple of VCs, but it does not change the annotation color and image:     switch annotation.title {        case "0-One" : annotationView.markerTintColor = UIColor.gray            annotationView.glyphImage = UIImage(named: "one")            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside)       case "1-Two": annotationView.markerTintColor = UIColor.gray            annotationView.glyphImage = UIImage(named: "two")            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure2(button:)), for: .touchUpInside)       case "2-Three": annotationView.markerTintColor = UIColor.gray            annotationView.glyphImage = UIImage(named: "three")            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure3(button:)), for: .touchUpInside)        case .none:           rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside)       case .some(_):            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside)        } This one changes just the color and image in annotation, but does not change the VCs: switch annotation.title!! { case "0-One": annotationView.markerTintColor = UIColor.gray annotationView.glyphImage = UIImage(named: "kopula") rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside) case "1-Two": annotationView.markerTintColor = UIColor.black annotationView.glyphImage = UIImage(named: "two") rightButton.addTarget(self, action: #selector(didClickDetailDisclosure2(button:)), for: .touchUpInside) case "2-Three": annotationView.markerTintColor = UIColor.red annotationView.glyphImage = UIImage(named: "three") rightButton.addTarget(self, action: #selector(didClickDetailDisclosure3(button:)), for: .touchUpInside) default: annotationView.markerTintColor = UIColor.darkGray annotationView.glyphImage = UIImage(named: "place") rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside) } return annotationView } Yes, I have different viewcontrollers, I've tested them with normal buttons. Ok, I've changed that, thanks

@Claude31 These is same code that Im running: import UIKit import MapKit class ViewController: UIViewController, MKMapViewDelegate { let initialLocation = CLLocation(latitude: 85.10786543576327, longitude: 11.03851472106171) let locationManager = CLLocationManager() struct Place { let name: String let description: String let type: String let lattitude: CLLocationDegrees let longtitude: CLLocationDegrees var coordinate: CLLocationCoordinate2D { .init(latitude: lattitude, longitude: longtitude) } } let location = CLLocation() let places = [Place(name: "One", description: "One", type: "one", lattitude: 81.108187, longtitude: 12.075812), Place(name: "Two", description: "Two", typ: "two", lattitude: 81.076187, longtitude: 11.000563), Place(name: "Three", description: "Three", typ: "Three", lattitude: 81.076187, longtitude: 11.000563)] [...] func findPlace(_ miejsca: [Place]) { for (i, place) in places.enumerated() { let annotations = MKPointAnnotation() annotations.title = String(i) + "-" + place.name annotations.subtitle = place.description annotations.coordinate = CLLocationCoordinate2D(latitude: place.lattitude, longitude: place.longtitude) mapView.addAnnotation(annotations) } } @objc func didClickDetailDisclosure(button: UIButton) { guard let vc = storyboard?.instantiateViewController(withIdentifier: "second_vc") as? SecondController else { return } present(vc, animated: true) } @objc func didClickDetailDisclosure2(button: UIButton) { guard let vc = storyboard?.instantiateViewController(withIdentifier: "third_vc") as? SecondController else { return } present(vc, animated: true) } @objc func didClickDetailDisclosure3(button: UIButton) { guard let vc = storyboard?.instantiateViewController(withIdentifier: "fourth_vc") as? SecondController else { return } present(vc, animated: true) } func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? { guard !(annotation is MKUserLocation) else { return nil } mapView.delegate = self let annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: String(annotation.hash)) let identifier = "identifier" annotationView.canShowCallout = true guard let annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier, for: annotation) as? MKMarkerAnnotationView else { return nil } let rightButton = UIButton(type: .detailDisclosure) // HERE IS THIS BUTTON, BUT I NEED EACH BUTTON FOR EACH ANNOTATION - THIS WAY IT SHOULD BE ONE FOR ALL OF THEM rightButton.tag = annotation.hash annotationView.canShowCallout = true annotationView.rightCalloutAccessoryView = rightButton rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside) let leftButton = UIButton(frame: CGRect( origin: CGPoint.zero, size: CGSize(width: 25, height: 25))) leftButton.setBackgroundImage(#imageLiteral(resourceName: "nav"), for: .normal) annotationView.leftCalloutAccessoryView = leftButton leftButton.addTarget(self, action: #selector(didClickDetailDisclosure2(button:)), for: .touchUpInside) switch annotation.title!! { case "0-One": annotationView.markerTintColor = UIColor.gray annotationView.glyphImage = UIImage(named: "kopula") rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside) case "1-Two": annotationView.markerTintColor = UIColor.black annotationView.glyphImage = UIImage(named: "two") rightButton.addTarget(self, action: #selector(didClickDetailDisclosure2(button:)), for: .touchUpInside) case "2-Three": annotationView.markerTintColor = UIColor.red annotationView.glyphImage = UIImage(named: "three") rightButton.addTarget(self, action: #selector(didClickDetailDisclosure3(button:)), for: .touchUpInside) default: annotationView.markerTintColor = UIColor.darkGray annotationView.glyphImage = UIImage(named: "place") rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside) } return annotationView // Without this one the app shows different VC for each annotation, but without this it does not show markerTintColor and glyphImage. } }

@Claude31 Hi, it only works with the number before like this and it does NOT change the tint color and image : switch annotation.title {         case "0-One" :            annotationView.markerTintColor = UIColor.gray            annotationView.glyphImage = UIImage(named: "photo")            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure(button:)), for: .touchUpInside)         case "1-Two":            annotationView.markerTintColor = UIColor.black            annotationView.glyphImage = UIImage(named: "photo1")            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure2(button:)), for: .touchUpInside)                     case .none:            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure2(button:)), for: .touchUpInside)        case .some(_):            rightButton.addTarget(self, action: #selector(didClickDetailDisclosure2(button:)), for: .touchUpInside)        } If I do case "One" without number before it dont get that. Is there any way to start with 1 instead of 0?