我正在解决我的问题，我认为这很简单。我已成功解析了JSON文件中的数据数组，以填充tableview和collectionview，但我仍然试图将字典加载到我的模型中。
{
latitude: 42.8821,
longitude: -8.541,
timezone: "Europe/Madrid",
offset: 2,
currently: {
time: 1494674291,
summary: "Drizzle",
icon: "rain",
precipIntensity: 0.1803,
precipProbability: 0.35,
precipType: "rain",
temperature: 14.73,
apparentTemperature: 14.73,
dewPoint: 11.63,
humidity: 0.82,
windSpeed: 7.15,
windBearing: 204,
cloudCover: 0.67,
pressure: 1013.37,
ozone: 378.18
},
我正在尝试访问“当前”字典以填充我的当前天气模型。
import UIKit
import Alamofire
class CurrentWeather {
private var _currentTemp: Double!
private var _date: String!
private var _weatherType: String!
private var _highTemp: Double!
private var _lowTemp: Double!
private var _weatherDesc: String!
var currentTemp: Double {
if _currentTemp == nil {
_currentTemp = 0.0
}
return _currentTemp
}
var date: String {
if _date == nil {
_date = ""
}
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .long
dateFormatter.timeStyle = .none
let currentDate = dateFormatter.string(from: Date())
self._date = "Today \(currentDate)"
return _date
}
var weatherType: String {
if _weatherType == nil {
_weatherType = ""
}
return _weatherType
}
var highTemp: Double {
if _highTemp == nil {
_highTemp = 0.0
}
return _highTemp
}
var lowTemp: Double {
if _lowTemp == nil {
_lowTemp = 0.0
}
return _lowTemp
}
var weatherDesc: String {
if _weatherDesc == nil {
_weatherDesc = ""
}
return _weatherDesc
}
init(currentDict: Dictionary<String, AnyObject>) {
if let temperature = currentDict["temperature"] as? Double {
self._currentTemp = temperature
}
if let icon = currentDict["icon"] as? String {
self._weatherType = icon
}
if let summary = currentDict["summary"] as? String {
self._weatherDesc = summary
}
}
}
我的Alamofire电话的VC代码看起来像这样 -
import UIKit
import Alamofire
class CityWeatherVC: UIViewController, UITableViewDataSource, UITableViewDelegate, UICollectionViewDelegate, UICollectionViewDataSource {
@IBOutlet weak var collectionView: UICollectionView!
@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var cityNameLbl: UILabel!
@IBOutlet weak var currentTempLbl: UILabel!
@IBOutlet weak var dateLbl: UILabel!
@IBOutlet weak var currentWeatherImg: UIImageView!
@IBOutlet weak var currentWeatherType: UILabel!
@IBOutlet weak var dayHighTempLbl: UILabel!
@IBOutlet weak var dayLowTempLbl: UILabel!
var currentWeather: CurrentWeather!
var currentWeathers = [CurrentWeather]()
var longRangeForecast: LongRangeForecast!
var longRangeForecasts = [LongRangeForecast]()
var hourlyForecast: HourlyForecast!
var hourlyForecasts = [HourlyForecast]()
private var _segueData: SegueData!
var segueData: SegueData {
get {
return _segueData
} set {
_segueData = newValue
}
}
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
collectionView.delegate = self
collectionView.dataSource = self
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
downloadApiData {
self.updateCurrentWeatherUI()
}
}
func downloadApiData(completed: DownloadComplete) {
let currentWeatherUrl = URL(string: "\(darkSkyUrl)\(segueData.latitude),\(segueData.longitude)?units=si")!
Alamofire.request(currentWeatherUrl).responseJSON { response in
let result = response.result
if let dict = result.value as? Dictionary<String, AnyObject> {
if let currently = dict["currently"] as? Dictionary<String, AnyObject> {
let current = CurrentWeather(currentDict: currently)
print(current) // ISSUE HERE!
}
if let hourly = dict["hourly"] as? Dictionary<String, AnyObject> {
if let data = hourly["data"] as? [Dictionary<String, AnyObject>] {
for obj in data {
let forecast = HourlyForecast(hourlyDict: obj)
self.hourlyForecasts.append(forecast)
}
self.collectionView.reloadData()
}
}
if let daily = dict["daily"] as? Dictionary<String, AnyObject> {
if let data = daily["data"] as? [Dictionary<String, AnyObject>] {
for obj in data {
let forecast = LongRangeForecast(longWeatherDict: obj)
self.longRangeForecasts.append(forecast)
}
self.longRangeForecasts.remove(at: 0)
self.tableView.reloadData()
}
}
}
}
completed()
}
// tableView - long range forecast
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if let cell = tableView.dequeueReusableCell(withIdentifier: "longRangeForecastCell", for: indexPath) as? LongRangeForecastCell {
let forecast = longRangeForecasts[indexPath.row]
cell.configureCell(longRangeForecast: forecast)
return cell
} else {
return LongRangeForecastCell()
}
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return longRangeForecasts.count
}
// collectionView - hourly forecast
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "hourlyForecastCell", for: indexPath) as? HourlyForecastCell {
let forecast = hourlyForecasts[indexPath.row]
cell.configureCell(hourlyForecast: forecast)
return cell
} else {
return HourlyForecastCell()
}
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return hourlyForecasts.count
}
func updateCurrentWeatherUI() {
cityNameLbl.text = segueData.cityName
dateLbl.text = currentWeather.date
currentTempLbl.text = "\(currentWeather.currentTemp)"
currentWeatherType.text = currentWeather.weatherDesc
currentWeatherImg.image = UIImage(named: "\(currentWeather.weatherType)L")
dayHighTempLbl.text = "\(Int(currentWeather.highTemp))"
dayLowTempLbl.text = "\(Int(currentWeather.lowTemp))"
}
@IBAction func backButtonPressed(_ sender: Any) {
dismiss(animated: true, completion: nil)
}
}
我有一种感觉，问题与我如何引用它有关，就像我已经处理过的dictionarys数组一样。任何帮助将不胜感激。
更新：收到result.value。我希望将“当前”字典解析到我的模型中，然后使用模型类中的变量来填充我的UI的当前预测部分。我无法粘贴整个结果，因为帖子允许的字符更大。
result.value的第二次更新：
["latitude": 42.660851, "timezone": Europe/Madrid, "daily": {
data = (
{
apparentTemperatureMax = "18.33";
apparentTemperatureMaxTime = 1495022400;
apparentTemperatureMin = "10.87";
apparentTemperatureMinTime = 1495054800;
cloudCover = "0.87";
dewPoint = "11.73";
humidity = "0.88";
icon = rain;
moonPhase = "0.7";
ozone = "325.51";
precipIntensity = "0.1753";
precipIntensityMax = "0.3327";
precipIntensityMaxTime = 1495040400;
precipProbability = "0.54";
precipType = rain;
pressure = "1019.68";
答案 0 :(得分：0)
首先，让我们为任何类
之外的JSON字典声明一个类型别名typealias JSONDictionary = [String:Any]
返回的结果（result.value）是一个数组而不是一个字典（参见起始[）。
在downloadApiData中获取作为数组中第一项的JSON数据，替换
if let dict = result.value as? Dictionary<String, AnyObject> {
与
if let array = result.value as? [JSONDictionary],
let dict = array.first {
现在将dict传递给初始值设定项（不是currently的值）
let current = CurrentWeather(currentDict: dict)
currentTemp，weatherType和weatherDesc的值位于密钥currently的字典中，highTemp和lowTemp的值均为在字典data中数组daily的第一个字典中。
来自私人支持变量的您的班级CurrentWeather - 未托管是
class CurrentWeather {
let currentTemp: Double
let weatherType: String
let highTemp: Double
let lowTemp: Double
let weatherDesc: String
var date: String {
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .long
dateFormatter.timeStyle = .none
let currentDate = dateFormatter.string(from: Date())
return "Today \(currentDate)"
}
init(currentDict: JSONDictionary) {
if let currently = currentDict["currently"] as? JSONDictionary {
self.currentTemp = currently["temperature"] as? Double ?? 0.0
self.weatherType = currently["icon"] as? String ?? "n/a"
self.weatherDesc = currently["summary"] as? String ?? "n/a"
} else {
self.currentTemp = 0.0
self.weatherType = "n/a"
self.weatherDesc = "n/a"
}
if let daily = currentDict["daily"] as? JSONDictionary,
let data = daily["data"] as? [JSONDictionary],
let firstDailyDict = data.first {
self.highTemp = firstDailyDict["temperatureMax"] as? Double ?? 0.0
self.lowTemp = firstDailyDict["temperatureMin"] as? Double ?? 0.0
} else {
self.highTemp = 0.0
self.lowTemp = 0.0
}
}
}