Question

在我的应用中，用户可以搜索位置并添加图钉。我想要一个下一个按钮去另一个视图控制器，并显示完全相同的地图，但在较小的版本。如何将完全相同的地图移动到另一个视图控制器？

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 1

您可以在执行segue或推送新控制器时将annotation或lat long传递给另一个视图控制器。如果您使用的是segue，则可以使用prepare for segue方法。

您可以为mapview制作custom class。并且可以在其中放置一些属性，如注释或lat long，然后创建此类的对象并设置此属性，以便根据该属性返回地图视图（相应的make方法）。你可以在许多viewcontroller中使用class，而不仅仅是两个。

根据评论更新：

请参阅this link以了解如何推送新的视图控制器。并参考此storyboard segue tutorial。实际上它是概念而不可能在这里解释一切如果你在代码中有一些错误然后我可以在这里解决但是为了学习整个概念你应该遵循不同的教程和笔记。做研究。谷歌，你会发现很多链接。

希望这会有所帮助：）

我可以在另一个View Controller中使用相同位置的相同地图吗？

1 个答案: