Question

我有一个地图搜索控制器，当我搜索一些注释时，它会放大它。我也希望当我按下结果时它会缩放正确的引脚并自动打开特定注释的注释视图

这是我的代码：

https://github.com/hellzkitchen/stackoverflow-041917.git

import UIKit
import MapKit

class LocationSearchTable : UITableViewController {

    var matchingItems = [CustomAnnotations]()
    var mapView: MKMapView? = nil

    var handleMapSearchDelegate:HandleMapSearch? = nil

    func parseAddress(selectedItem:MKPlacemark) -> String {
        // put a space between "4" and "Melrose Place"
        let firstSpace = (selectedItem.subThoroughfare != nil && selectedItem.thoroughfare != nil) ? " " : ""
        // put a comma between street and city/state
        let comma = (selectedItem.subThoroughfare != nil || selectedItem.thoroughfare != nil) && (selectedItem.subAdministrativeArea != nil || selectedItem.administrativeArea != nil) ? ", " : ""
        // put a space between "Washington" and "DC"
        let secondSpace = (selectedItem.subAdministrativeArea != nil && selectedItem.administrativeArea != nil) ? " " : ""
        let addressLine = String(
            format:"%@%@%@%@%@%@%@",
            // street number
            selectedItem.subThoroughfare ?? "",
            firstSpace,
            // street name
            selectedItem.thoroughfare ?? "",
            comma,
            // city
            selectedItem.locality ?? "",
            secondSpace,
            // state
            selectedItem.administrativeArea ?? ""
        )
        return addressLine
    }

    func search(keywords:String) {
        self.matchingItems.removeAll()
        for annotation in self.mapView!.annotations {
            if annotation.isKindOfClass(CustomAnnotations) {
                //Just an example here for searching annotation by title, you could add other filtering actions else.
                if (annotation.title??.rangeOfString(keywords) != nil) {
                    self.matchingItems.append(annotation as! CustomAnnotations)
                }
            }
        }
        self.tableView.reloadData()
    }

}

extension LocationSearchTable : UISearchResultsUpdating {
    func updateSearchResultsForSearchController(searchController: UISearchController) {
        guard let mapView = mapView,
            let searchBarText = searchController.searchBar.text else { return }
        let request = MKLocalSearchRequest()
        request.naturalLanguageQuery = searchBarText
        request.region = mapView.region
        let search = MKLocalSearch(request: request)
        search.startWithCompletionHandler { response, _ in
            guard let response = response else {
                return
            }
            self.matchingItems = response.mapItems
            self.tableView.reloadData()
        }
    }

}

extension LocationSearchTable {
    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return matchingItems.count
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("MapSearchCell", forIndexPath: indexPath)
        let selectedItem = matchingItems[indexPath.row]
        cell.textLabel?.text = selectedItem.title
        cell.detailTextLabel?.text = selectedItem.subtitle
        return cell
    }

}


extension LocationSearchTable {
    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        let selectedItem = matchingItems[indexPath.row]//.placemark
        handleMapSearchDelegate?.dropPinZoomIn(selectedItem)
        dismissViewControllerAnimated(true, completion: nil)
    }
}

Answer 1

搜索指定的注释后，有一个方法selectAnnotation: 因此，当您点击该结果时，请使用

mapView.selectAnnotation(resultAnnotation, animated: true)

搜索时打开AnnotationView

1 个答案: