我需要发布一个https请求才能登录视图（SwiftUI），我的代码遵循getres.swift中的代码： 所以我希望从响应中获取价值并将其放在文本中
import Foundation
import Combine
struct result: Decodable {
let res, ordercount, rate: String
}
class getres: ObservableObject {
let objectWillChange = PassthroughSubject<getres, Never>()
@Published var authenticated = ""
@Published var todos = [result]() {
didSet {
objectWillChange.send(self)
}
}
func auth(username: String, password: String) {
guard let url = URL(string: "http://company.com/auth.php") else { return }
let body: [String: String] = ["username": username, "password": password]
let finalBody = try! JSONSerialization.data(withJSONObject: body)
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = finalBody
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
URLSession.shared.dataTask(with: request) { (data, response, error) in
guard let data=data else{return}
let fineldata=try! JSONDecoder().decode(result.self, from: data)
DispatchQueue.main.async {
self.todos = [fineldata]
self.authenticated=fineldata.res
}
print(fineldata)
}.resume()
}
}
然后在登录页面中尝试显示其他视图
在这段代码中，我将从json响应的函数中获取值，将获得ordercount和费率，并将其放入其他视图中
import SwiftUI
struct ContentView: View {
@State private var username: String = ""
@State private var password: String = ""
@ObservedObject var manager = getres()
var body: some View {
VStack(alignment: .leading) {
if manager.authenticated == "2"{
userdetails()
}else{
Text("Username")
TextField("placeholder", text: $username)
.textFieldStyle(RoundedBorderTextFieldStyle())
.border(Color.green)
.autocapitalization(.none)
Text("Password")
SecureField("placeholder", text: $password)
.textFieldStyle(RoundedBorderTextFieldStyle())
.border(Color.green)
Button(action: {
self.manager.auth(username: self.username, password: self.password)
}) {
HStack{
Spacer()
Text("Login")
Spacer()
}
.accentColor(Color.white)
.padding(.vertical, 10)
.background(Color.red)
.cornerRadius(5)
.padding(.horizontal, 40)
}
}.padding()}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
并且在用户中有详细说明，所以我需要从响应中获取值
struct userdetails: View {
@State var controller = getres()
var body : some View{
ScrollView(Axis.Set.vertical, showsIndicators: true) {
VStack(spacing: 20){
Image("wlogo").renderingMode(.original); HStack(spacing: 15){
Spacer()
VStack(alignment: .center, spacing: 10) {
Text(???).foregroundColor(Color.white).bold()
.font(.largeTitle)
Text("")
.foregroundColor(Color.white)
.font(.headline) }
Spacer()
}}}}
如何从响应中获取订单数量并输入 文本（？？？） 在视图中用户详细信息 例如controller.todos.ordercount 我得到这个错误 类型“ [结果]”的值没有成员“订单数” 当我尝试 文字（controller.todos.ordercount） json响应
{"res":"2","ordercount":"20","rate":"5"}
答案 0 :(得分：0)
更新后的答案
1。）如果您只复制一部分代码，将很有帮助-这对我们所有人来说都更容易复制 2.）您应该先尝试自己的代码，然后再手动复制或更改代码中的某些内容。发现类似这样的错误很烦人
如果manager.authenticated ==“ 2” { userdetails（） }其他{
Text("Username")
TextField("placeholder", text: $username)
.textFieldStyle(RoundedBorderTextFieldStyle())
.border(Color.green)
.autocapitalization(.none)
Text("Password")
SecureField("placeholder", text: $password)
.textFieldStyle(RoundedBorderTextFieldStyle())
.border(Color.green)
Button(action: {
self.manager.auth(username: self.username, password: self.password)
}) {
HStack{
Spacer()
Text("Login")
Spacer()
}
.accentColor(Color.white)
.padding(.vertical, 10)
.background(Color.red)
.cornerRadius(5)
.padding(.horizontal, 40)
}
}.padding()}
}
要在.if语句中添加.padding（）的地方...。
3。）您应该以这种方式命名班级名称，这样人们就可以理解该班级的用途，并以大写字母开头，例如Apple会使用所有班级名称
4。）您还应该开始将名称大写（如Apple一样） 5.）由于我必须访问您的页面，而您没有提供示例数据和/或密码，所以我不知道会有什么数据...
这是到目前为止我的解决方案代码：
我添加了一些伪造数据，因为我无法访问您的数据..所以您可以看到一些详细信息。
struct ToDo: Decodable, Identifiable {
var id = UUID().uuidString
let res, ordercount, rate: String
}
class ToDoGetter: ObservableObject {
let objectWillChange = PassthroughSubject<ToDoGetter, Never>()
@Published var authenticated = ""
@Published var todos = [ToDo]() {
didSet {
objectWillChange.send(self)
}
}
let someFakingTodos = [
ToDo(res: "a", ordercount: "5", rate: "75%"),
ToDo(res: "b", ordercount: "52", rate: "5%"),
ToDo(res: "c", ordercount: "566", rate: "7%"),
ToDo(res: "d", ordercount: "53", rate: "33%"),
ToDo(res: "e", ordercount: "15", rate: "44%"),
ToDo(res: "f", ordercount: "345", rate: "10%")
]
func auth(username: String, password: String) {
guard let url = URL(string: "http://company.com/auth.php") else { return }
let body: [String: String] = ["username": username, "password": password]
let finalBody = try! JSONSerialization.data(withJSONObject: body)
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = finalBody
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
URLSession.shared.dataTask(with: request) { (data, response, error) in
guard let data=data else{return}
let fineldata=try! JSONDecoder().decode(ToDo.self, from: data)
DispatchQueue.main.async {
self.todos = [fineldata]
self.authenticated=fineldata.res
}
print(fineldata)
}.resume()
}
}
struct ContentView: View {
@EnvironmentObject var todoGetter : ToDoGetter
@State private var username: String = ""
@State private var password: String = ""
@State var navigateToDetail : Bool = false
var body: some View {
NavigationView {
VStack(alignment: .leading) {
if todoGetter.authenticated == "2"{
Userdetails().environmentObject(todoGetter)
} else{
Text("Username")
TextField("placeholder", text: $username)
.textFieldStyle(RoundedBorderTextFieldStyle())
.border(Color.green)
.autocapitalization(.none)
Text("Password")
SecureField("placeholder", text: $password)
.textFieldStyle(RoundedBorderTextFieldStyle())
.border(Color.green)
NavigationLink(destination: Userdetails(), isActive: self.$navigateToDetail) {
EmptyView() }
.hidden()
.padding()
Button(action: {
self.todoGetter.auth(username: self.username, password: self.password)
self.navigateToDetail.toggle()
}) {
HStack{
Spacer()
Text("Login")
Spacer()
}
.accentColor(Color.white)
.padding(.vertical, 10)
.background(Color.red)
.cornerRadius(5)
.padding(.horizontal, 40)
}
}
}
}
}
}
struct Userdetails: View {
@EnvironmentObject var todoGetter : ToDoGetter
var body : some View{
VStack(spacing: 20) {
Image("wlogo").renderingMode(.original); HStack(spacing: 15){
Spacer()
List(todoGetter.someFakingTodos) { todo in
VStack(alignment: .center, spacing: 10) {
HStack {
Text(todo.res).foregroundColor(Color.white).bold()
.font(.largeTitle)
Text(todo.ordercount)
.foregroundColor(Color.white)
.font(.headline)
Text(todo.rate)
.foregroundColor(Color.white)
.font(.headline)
}
}.background(Color.black)
Spacer()
}
}
}
}
}
旧答案
您致电getres 2次。您只需调用一次，然后将值提供给detailview。
每个应用只能创建一次模型。