应用在为参数添加参数后不符合协议'App'

Question

当我尝试运行我的代码时，我在我的应用程序文件中有一个错误，因为在ContentView中缺少参数的参数。因此，我通过为参数输入参数来解决这个问题。

这是我所做的(这解决了我之前的错误):

@main
struct Market_ExampleApp: App {
@StateObject var appModel: AppViewModel = .init()
@StateObject var sharedData: SharedDataModel = SharedDataModel()
@Binding var shirtData : Shirt
@Binding var showDetailShirt: Bool
@Binding var trouserData : Trouser
@Binding var showDetailTrouser: Bool
init(shirtData: Binding<Shirt>, showDetailShirt: Binding<Bool>, trouserData: Binding<Trouser>, showDetailTrouser: Binding<Bool>){
self._shirtData = shirtData
self._showDetailShirt = showDetailShirt
self._trouserData = trouserData
self._showDetailTrouser = showDetailTrouser
UITabBar.appearance().isHidden = true
}

// Calling Delegate...
@UIApplicationDelegateAdaptor(Appdelegate.self) var delegate
var body: some Scene {
WindowGroup {
ContentView(shirtData: $shirtData, showDetailShirt: $showDetailShirt, trouserData: $trouserData, showDetailTrouser: $showDetailTrouser)
.onOpenURL(perform: { url in

Auth.auth().canHandle(url)
})
}
}
}

当我做这些更改时，它解决了之前的错误。但是现在我得到了错误:

类型'Market_ExampleApp'不符合协议'App'

最初我认为init是app协议所必需的，并尝试了这个方法，但它不起作用。

ContentView:

import SwiftUI
struct ContentView: View {

@AppStorage("log_status") var log_Status: Bool = false
@StateObject var appModel: AppViewModel = .init()

@StateObject var sharedData: SharedDataModel = SharedDataModel()

@Binding var shirtData : Shirt
@Binding var showDetailShirt: Bool
@Binding var trouserData : Trouser
@Binding var showDetailTrouser: Bool

init(shirtData: Binding<Shirt>, showDetailShirt: Binding<Bool>, trouserData: Binding<Trouser>, showDetailTrouser: Binding<Bool>){
self._shirtData = shirtData
self._showDetailShirt = showDetailShirt
self._trouserData = trouserData
self._showDetailTrouser = showDetailTrouser

UITabBar.appearance().isHidden = true
}

var body: some View {
Group{
if log_Status{
MainPage(shirtData: $shirtData, showDetailShirt: $showDetailShirt, trouserData: $trouserData, showDetailTrouser: $showDetailTrouser)
}
else{
OnBoardingPage()
}
}
}
}

主页代码:

@Binding var shirtData : Shirt
@Binding var showDetailShirt: Bool
@Binding var trouserData : Trouser
@Binding var showDetailTrouser: Bool
@Namespace var animation

// Hiding Tab Bar...
init(shirtData: Binding<Shirt>, showDetailShirt: Binding<Bool>, trouserData: Binding<Trouser>, showDetailTrouser: Binding<Bool>){
self._shirtData = shirtData
self._showDetailShirt = showDetailShirt
self._trouserData = trouserData
self._showDetailTrouser = showDetailTrouser

UITabBar.appearance().isHidden = true
}

Struct for Shirt:

import SwiftUI
import FirebaseFirestoreSwift
import Firebase
struct Shirt: Identifiable, Codable {

@DocumentID var id: String?
var shirt_name: String = ""
var shirt_type: String = ""
var shirt_image: String = ""
var shirt_uid : String = ""
var shirt_stock: Int = 0
}

裤子结构:

import SwiftUI
import FirebaseFirestoreSwift
import Firebase
struct Trouser: Identifiable, Codable {

@DocumentID var id: String?
var trouser_name: String = ""
var trouser_type: String = ""
var trouser_image: String = ""
var trouser_uid : String = ""
}

MarketplaceShirtView(当衬衫被点击时，它应该带用户到一个详细的视图)。MarketplaceTrouserView的代码是相同的

import SwiftUI
struct MarketplaceShirtView: View {

@EnvironmentObject var appModel: AppViewModel
@StateObject var MarketplaceModel = MarketplaceViewModel()
@State private var selectedMarketplaceFilter: MarketplaceFilterViewModel = .shirt
@Namespace var animation : Namespace.ID 
@State var showDetailShirt = false
@State var selectedShirt : Shirt!

@EnvironmentObject var sharedData: SharedDataModel

var body: some View {

var columns = Array(repeating: GridItem(.flexible()), count: 2)

ZStack{

VStack(spacing: 10){


HStack {

Text("Find Shirts To Buy")

}

}
}

if MarketplaceModel.shirts.isEmpty{

ProgressView()

}
else{

ScrollView {

LazyVGrid(columns: Array(repeating: GridItem(){

ForEach(MarketplaceModel.filteredShirt){shirt in

ShirtView(shirtData: shirt)
.onTapGesture {

selectedShirt = shirt
showDetailShirt.toggle()

}
}
}
})
}
}

if selectedShirt != nil && showDetailShirt{

ShirtDetailView(shirtData: Binding($selectedShirt)!, showDetailShirt: $showDetailShirt,animation: _animation)
}
}
}

调用ShirtDetailView时发生错误。错误如下:

无法将类型为"Binding"的值"$showDetailShirt"转换为预期类型为"Bool"的值，请使用包装值代替

无法将"Binding"类型的值转换为期望的参数类型"Shirt">

Answer 1

App()是开始运行一切的主要组件。

App中不能有@Binding变量，否则会导致错误

App不符合协议App