Swift JSON解析访问数组
我正在从中提取一个JSON文件,但是我无法从提取的数据中访问数组的各个片段。我当前的视图控制器中有JSON解析代码,它还允许我自己读取整个数组Swift JSON解析访问数组,json,swift,Json,Swift,我正在从中提取一个JSON文件,但是我无法从提取的数据中访问数组的各个片段。我当前的视图控制器中有JSON解析代码,它还允许我自己读取整个数组 struct ElevationArray: Decodable { let results: [results] } struct results: Decodable { let latitude: Double let longitude: Double let elevation: Double ini
struct ElevationArray: Decodable {
let results: [results]
}
struct results: Decodable {
let latitude: Double
let longitude: Double
let elevation: Double
init(json: [String: Any]){
latitude = json["latitude"] as? Double ?? 0.0
longitude = json["longitude"] as? Double ?? 0.0
elevation = json["elevation"] as? Double ?? 0.0
}
}
class FlightInfo: UITableViewController {
@IBOutlet weak var Lat: UILabel!
@IBOutlet weak var Long: UILabel!
@IBOutlet weak var Elevation_label: UILabel!
var elevationmain: Double?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
Lat.text = "\(publocation.latitude)"
Long.text = "\(publocation.longitude)"
ElevationJSON()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func ElevationJSON(){
let jsonURLString = "https://api.open-elevation.com/api/v1/lookup?locations=41.161758,-8.583933"
guard let url = URL(string: jsonURLString) else {return}
URLSession.shared.dataTask(with: url) { (data, response, err) in
//perhaps check err
//also perhaps check response status 200 OK
guard let data = data else { return }
do {
//let websiteDescription = try JSONDecoder().decode(WebsiteDescription.self, from: data)
// print(websiteDescription.name, websiteDescription.description)
let eleresults = try JSONDecoder().decode(ElevationArray.self, from: data)
print(eleresults.results)
let eletest = eleresults.results
print(eletest)
//self.elevationmain = Double(eleresults.results)
} catch let jsonErr {
print("Error serializing json:", jsonErr)
}
}.resume()
}
}
这是我在打印出数组运行应用程序时得到的控制台输出。
eleresults.results
(或eletest
)是一个结果的数组
要访问所有数据,请使用循环:
for result in eletest {
print(result.elevation)
}
如果您只想要第一个结果:
if let result = eletest.first {
print(result.elevation)
}
顺便说一句-您的结果
结构应该重命名为一些有用的东西,例如高程
或任何比结果
更详细的描述(注意它应该以大写字母开头)