74app/sdsz74/ContentView.swift

//
//  ContentView.swift
//  sdsz74
//
//  Created by yunli on 2023/5/18.
//

import SwiftUI

struct ContentView: View {
    @State private var examCount = 0
    @State private var messageCount = 0
    @State private var isLoggedIn = 0
    @State private var userInfo: UserInfo = .init()

    var body: some View {
        TabView {
            NavigationView {
                NavigationLink(destination: examListView(count: $examCount)) {
                    Text("共 \(examCount) 场考试")
                }
                .navigationBarTitle("74 桌")
            }
            .tabItem { Image(systemName: "chart.bar.fill")
                Text("成绩分析")
            }
            NavigationView {
                List {
                    NavigationLink(destination: messageView(count: $messageCount)) {
                        Text("消息")
                            .badge(messageCount)
                    }
                }
                .navigationBarTitle("数字校园")
            }
            .tabItem { Image(systemName: "graduationcap")
                Text("数字校园")
            }
            NavigationView {
                if isLoggedIn != 0 {
                    accountView(isLoggedIn: $isLoggedIn, userInfo: $userInfo)
                        .navigationBarTitle("账号")
                } else {
                    loginView(isLoggedIn: $isLoggedIn, userInfo: $userInfo)
                        .navigationBarTitle("登录")
                }
            }
            .tabItem { Image(systemName: "person")
                Text("账号")
            }
        }
    }
}

extension View {
    func hideKeyboard() {
        UIApplication.shared.sendAction(
            #selector(UIResponder.resignFirstResponder),
            to: nil,
            from: nil,
            for: nil
        )
    }
}


 struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
 }