我是SwiftUI的新手，在SwiftUI中解析JSON文件中的数据时遇到了问题。现在，我可以传递JSON文件中的所有数据，但我想根据数据的ID号解析数据列表。
下面是我的json文件：
{
"client": {
"id": 200,
"first_name": "Luke",
"last_name": "",
"email": "luke@abc.com"
},
"business_segments": [
{
"id": 1,
"name": "Segment A",
"status": "Open",
"companies": [
5,
6,
7
]
},
{
"id": 2,
"name": "Segment B",
"status": "Open",
"companies": [
1,
2,
4
]
},
{
"id": 3,
"name": "Segment C",
"status": "Open",
"companies": [
3,
8,
12
]
},
{
"id": 4,
"name": "Segment D",
"status": "Open",
"companies": [
9,
10,
15
]
},
{
"id": 5,
"name": "Segment E",
"status": "Open",
"companies": [
11,
13,
14,
16
]
},
{
"id": 6,
"name": "Segment F",
"status": "Open",
"companies": [
17,
18
]
}
],
"companies": [
{
"id": 1,
"name": "COMPANY A",
"status": "Open"
},
{
"id": 2,
"name": "COMPANY B",
"status": "Open"
},
{
"id": 3,
"name": "COMPANY C",
"status": "Open"
},
{
"id": 4,
"name": "COMPANY D",
"status": "Open"
},
{
"id": 5,
"name": "COMPANY E",
"status": "Open"
},
{
"id": 6,
"name": "COMPANY F",
"status": "Open"
},
{
"id": 7,
"name": "COMPANY G",
"status": "Open"
},
{
"id": 8,
"name": "COMPANY H",
"status": "Open"
},
{
"id": 9,
"name": "COMPANY I",
"status": "Open"
},
{
"id": 10,
"name": "COMPANY J",
"status": "Open"
},
{
"id": 11,
"name": "COMPANY K",
"status": "Open"
},
{
"id": 12,
"name": "COMPANY L",
"status": "Open"
},
{
"id": 13,
"name": "COMPANY M",
"status": "Open"
},
{
"id": 14,
"name": "COMPANY N",
"status": "Open"
},
{
"id": 15,
"name": "COMPANY O",
"status": "Open"
},
{
"id": 16,
"name": "COMPANY P",
"status": "Open"
},
{
"id": 17,
"name": "COMPANY Q",
"status": "Open"
},
{
"id": 18,
"name": "COMPANY R",
"status": "Open"
}
]
}正如您在JSON文件中所看到的，在我的业务部门部分，我列出了一个数字列表。这些数字是与公司部分中的特定公司相关联的ID号。我希望在contentView中有六个按钮。每个按钮代表一个业务部门。当我单击每个按钮时，它将跳转到CompanyName View。在那里所有的公司都显示了每个业务部门。然而，我能做的和我已经累了是列出所有的公司在公司名称视图。因此，我需要一些帮助。我会给你看不同的文件在我的项目。
CompanyViewModel.swift，其中处理来自json的所有解析：
import Foundation
// MARK: - CompanyData
struct CompanyData: Codable,Hashable {
let client: Client
let businessSegments, companies: [BusinessSegment]
enum CodingKeys: String, CodingKey {
case client
case businessSegments = "business_segments"
case companies
}
}
// MARK: - BusinessSegment
struct BusinessSegment: Codable,Hashable {
let id: Int
let name: String
let status: Status
let companies: [Int]?
}
enum Status: String, Codable {
case statusOpen = "Open"
}
// MARK: - Client
struct Client: Codable,Hashable {
let id: Int
let firstName, lastName, email: String
enum CodingKeys: String, CodingKey {
case id
case firstName = "first_name"
case lastName = "last_name"
case email
}
}
class CompanyViewModel:ObservableObject{
@Published var company_data: [CompanyData] = []
func getUserData(){
guard let url = Bundle.main.url(forResource:"Company", withExtension:"json") else {
print("Invalid URL")
return
}
let task = URLSession.shared.dataTask(with:url){ data, response, error in
let decoder = JSONDecoder()
if let data = data {
do {
let company_data = try decoder.decode(CompanyData.self, from:data)
DispatchQueue.main.async{
self.company_data = [company_data]
}
print(company_data.businessSegments)
print()
print(company_data.companies)
print()
} catch {
print("cannot decode")
print(String(data:data, encoding:.utf8) as Any)
print(error)
}
}
}
task.resume()
}
}ContentView.swift
import SwiftUI
struct ContentView: View {
@StateObject private var companyVM = CompanyViewModel()
var body: some View {
NavigationView{
VStack {
ForEach(companyVM.company_data,id:\.self){ item in
ForEach(item.businessSegments,id:\.self){ segment in
/*Text(segment.name)
.multilineTextAlignment(.center)
.bold()
.font(.custom("Montserrat-Bold", size: 24)) */
NavigationLink(destination:
CompanyName(segment: segment.name)){
Text(segment.name)
.frame(width:240,height:50)
.bold()
.foregroundColor(.white)
.background(Color.orange)
.clipShape(Capsule())
}
}
}
}
.padding()
.onAppear(){
companyVM.getUserData()
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}CompanyName.swift
import SwiftUI
struct CompanyName: View {
let segment: String
@StateObject private var companyVM = CompanyViewModel()
var body: some View {
NavigationView{
VStack{
Text(segment)
.multilineTextAlignment(.center)
.bold()
.font(.custom("Montserrat-Bold", size: 24))
ForEach(companyVM.company_data,id:\.self){ item in
ForEach(item.companies,id:\.self){ company in
Text(company.name)
.multilineTextAlignment(.center)
.bold()
.font(.custom("Montserrat-Bold", size: 24))
}
}
}.padding()
.onAppear(){
companyVM.getUserData()
}
}
}
}
struct CompanyName_Previews: PreviewProvider {
static var previews: some View {
CompanyName(segment: "Business Segments")
}
}
1条答案
按热度按时间rt4zxlrg1#
下面是显示与所选细分市场相关的公司的代码。当你点击一个细分市场时，该特定细分市场的公司将从以下位置检索（基于ID）：特定
CompanyData或所有[CompanyData]。调整代码以选择其中一个，两个函数都在CompanyViewModel中提供。注意，我留下了
@Published var company_data: [CompanyData]，尽管您说其中只有一个CompanyData。请查看此链接，其中提供了如何使用
ObservableObject以及如何在应用https://developer.apple.com/documentation/swiftui/managing-model-data-in-your-app中管理数据的示例