使用SWIFT搜索地址

Question

在我的应用程序中,我需要用户输入他的家庭地址,但我不能得到任何方式显示的地址只在用户区域,并且是完整的地址,如225e 57th st, NY, New York.

我想在tableview上为用户提供所有列出的选项,并在用户输入他的地址时对其进行过滤.

Answer 1

您可以定义本地搜索完成程序:

let completer = MKLocalSearchCompleter()

然后提供查询片段:

completer.delegate = self
completer.region = MKCoordinateRegion(center: currentCoordinate, latitudinalMeters: 10_000, longitudinalMeters: 10_000)
completer.queryFragment = "300 S Orange"

并实施MKLocalSearchCompleterDelegate协议

extension ViewController: MKLocalSearchCompleterDelegate {

    func completerDidUpdateResults(_ completer: MKLocalSearchCompleter) {
        let addresses = completer.results.map { result in
            result.title + ", " + result.subtitle
        }

        // use addresses, e.g. update model and call `tableView.reloadData()
    }

}

产量:

["300 S Orange Grove Blvd, Pasadena, CA, United States",
 "300 S Orange Ave, Monterey Park, CA, United States",
 "300 S Orange St, Glendale, CA, United States",
 "300 S Orange Dr, Los Angeles, CA, United States",
 "300 S Orange Ave, Azusa, CA, United States",
 "300 S Orange Grove Ave, Los Angeles, CA, United States",
 "300 S Orange Ave, Brea, CA, United States",
 "300 S Orange Ave, Fullerton, CA, United States",
 "300 S Orange St, Orange, CA, United States",
 "300 S Orange Ave, Rialto, CA, United States",
 "300 S Orange Ave, Fallbrook, CA, United States",
 "300 S Orange St, Escondido, CA, United States",
 "300 S Orange Ave, El Cajon, CA, United States",
 "300 S Orange Cir, Tulare, CA, United States",
 "300 S Orange Ave, Exeter, CA, United States"]

或者,您可以进行本地搜索:

let request = MKLocalSearch.Request()
request.region = MKCoordinateRegion(center: currentCoordinate, latitudinalMeters: 10_000, longitudinalMeters: 10_000)
request.naturalLanguageQuery = "300 S Pumpkin"

let formatter = CNPostalAddressFormatter()
formatter.style = .mailingAddress

let search = MKLocalSearch(request: request)
search.start { response, error in
    let addresses = response?.mapItems.compactMap { item -> String? in
        return item.placemark.postalAddress.flatMap {
            formatter.string(from: $0).replacingOccurrences(of: "\n", with: ", ")
        }
    }
    print(addresses)
}

假设它找到匹配,则显示如下内容:

["300 S Pumpkin Blvd, Los Angeles, CA  92108, United States",
 "300 S Pumpkin Pkwy, Los Angeles, CA  92103, United States",
 "300 S Pumpkin Dr, San Gabriel, CA  91776, United States"])

现在,无论您是想要postalAddress还是从中提取单个组件FormattedAddressLines都取决于您,但希望这可以说明这一想法.