如何将 json 中的双精度值转换并设置为函数
How to convert and set double values from json to function
我的问题是:使用 alamofire,我需要将坐标传递给位置变量中的函数 (longitude, latitude)。获取数据成功,但是无法添加到函数中。该函数在 MapViewController.swift 中称为“showSomeMarkers”。谢谢!
代码:
class MapViewController: UIViewController {
@IBOutlet var tableView: UITableView!
@IBOutlet var googleMapView: GMSMapView!
fileprivate var coordinates = [Model]()
@IBAction func dismissAction(_ sender: Any) {
dismiss(animated: true, completion: nil)
}
func getValues() {
Networking.shared.getAllValues(value: "/kyiv/places") { coordinates in
self.coordinates = coordinates
self.tableView.reloadData()
}
}
func showMarker (position: CLLocationCoordinate2D) {
let marker = GMSMarker()
marker.position = position
marker.title = "Kiev"
marker.snippet = "Capital of Ukraine"
marker.map = googleMapView
}
//THIS FUNCTION
func showSomeMarkers () {
let position = CLLocationCoordinate2D(latitude: 50 , longitude: 30)
let marker = GMSMarker(position: position)
marker.title = "Some title"
marker.map = googleMapView
}
override func viewDidLoad() {
super.viewDidLoad()
let camera = GMSCameraPosition(latitude: 50.45, longitude: 30.52, zoom: 5.7)
googleMapView.camera = camera
self.showMarker(position: googleMapView.camera.target)
getValues()
showSomeMarkers()
}
}
extension MapViewController: UITableViewDelegate , UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
coordinates.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell" , for: indexPath) as! Cell
let value = coordinates[indexPath.row]
cell.configureValues(value: value)
print(value)
return cell
}
}
型号:
class Model: NSObject {
var name: String
var lat: Double
var lng: Double
init(with modelDictionary: [String: Any]) {
name = modelDictionary["name"] as? String ?? ""
lat = modelDictionary["lat"] as? Double ?? 0.0
lng = modelDictionary["lng"] as? Double ?? 0.0
}
}
单元格:
class Cell: UITableViewCell {
@IBOutlet var nameLabel: UILabel!
var latitude: Double?
var longitude: Double?
var name: String?
func configureValues(value: Model) {
nameLabel.text = value.name
latitude = value.lat
longitude = value.lng
}
}
因为我需要 Json 中的 1 个数据类型字符串用于 table 视图,所以我在单元格中配置值。请帮忙。谢谢!
将您的功能更改为
func showSomeMarkers (latitude: Double, longitude: Double) {
let position = CLLocationCoordinate2D(latitude: latitude , longitude: longitude)
//rest of code
}
并从 getValues
的闭包中调用它
func getValues() {
Networking.shared.getAllValues(value: "/kyiv/places") { coordinates in
self.coordinates = coordinates
for coordinate in self.coordinates {
showSomeMarkers(latitude: coordinate.lat, longitude: coordinate.lng)
}
self.tableView.reloadData()
}
}
我的问题是:使用 alamofire,我需要将坐标传递给位置变量中的函数 (longitude, latitude)。获取数据成功,但是无法添加到函数中。该函数在 MapViewController.swift 中称为“showSomeMarkers”。谢谢!
代码:
class MapViewController: UIViewController {
@IBOutlet var tableView: UITableView!
@IBOutlet var googleMapView: GMSMapView!
fileprivate var coordinates = [Model]()
@IBAction func dismissAction(_ sender: Any) {
dismiss(animated: true, completion: nil)
}
func getValues() {
Networking.shared.getAllValues(value: "/kyiv/places") { coordinates in
self.coordinates = coordinates
self.tableView.reloadData()
}
}
func showMarker (position: CLLocationCoordinate2D) {
let marker = GMSMarker()
marker.position = position
marker.title = "Kiev"
marker.snippet = "Capital of Ukraine"
marker.map = googleMapView
}
//THIS FUNCTION
func showSomeMarkers () {
let position = CLLocationCoordinate2D(latitude: 50 , longitude: 30)
let marker = GMSMarker(position: position)
marker.title = "Some title"
marker.map = googleMapView
}
override func viewDidLoad() {
super.viewDidLoad()
let camera = GMSCameraPosition(latitude: 50.45, longitude: 30.52, zoom: 5.7)
googleMapView.camera = camera
self.showMarker(position: googleMapView.camera.target)
getValues()
showSomeMarkers()
}
}
extension MapViewController: UITableViewDelegate , UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
coordinates.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell" , for: indexPath) as! Cell
let value = coordinates[indexPath.row]
cell.configureValues(value: value)
print(value)
return cell
}
}
型号:
class Model: NSObject {
var name: String
var lat: Double
var lng: Double
init(with modelDictionary: [String: Any]) {
name = modelDictionary["name"] as? String ?? ""
lat = modelDictionary["lat"] as? Double ?? 0.0
lng = modelDictionary["lng"] as? Double ?? 0.0
}
}
单元格:
class Cell: UITableViewCell {
@IBOutlet var nameLabel: UILabel!
var latitude: Double?
var longitude: Double?
var name: String?
func configureValues(value: Model) {
nameLabel.text = value.name
latitude = value.lat
longitude = value.lng
}
}
因为我需要 Json 中的 1 个数据类型字符串用于 table 视图,所以我在单元格中配置值。请帮忙。谢谢!
将您的功能更改为
func showSomeMarkers (latitude: Double, longitude: Double) {
let position = CLLocationCoordinate2D(latitude: latitude , longitude: longitude)
//rest of code
}
并从 getValues
的闭包中调用它func getValues() {
Networking.shared.getAllValues(value: "/kyiv/places") { coordinates in
self.coordinates = coordinates
for coordinate in self.coordinates {
showSomeMarkers(latitude: coordinate.lat, longitude: coordinate.lng)
}
self.tableView.reloadData()
}
}