我正在尝试创建一个包含下拉菜单的切换开关，其中包含开始和停止时间范围选择器。然后堆叠 7 个开关，代表一周中的几天

Question

这是问题所在

当重复切换超过 5 次时，代码会引发编译错误。
需要在不切换到关闭位置的情况下关闭选择器。
选择的开始和停止时间显示在切换栏中，但随后会重置

当前代码：不要笑得太厉害 ;-)

import SwiftUI

struct ContentView: View {
@State private var toggleStateM = false
@State private var toggleStateT = false
@State private var toggleStateW = false
@State private var toggleStateTH = false
@State private var toggleStateF = false
//@State private var toggleStateST = false
//@State private var toggleStateSN = false

@State private var startSentryTimeM = Date()
@State private var endSentryTimeM = Date()
@State private var startSentryTimeT = Date()
@State private var endSentryTimeT = Date()
@State private var startSentryTimeW = Date()
@State private var endSentryTimeW = Date()
@State private var startSentryTimeTH = Date()
@State private var endSentryTimeTH = Date()
@State private var startSentryTimeF = Date()
@State private var endSentryTimeF = Date()
// @State private var startSentryTimeST = Date()
// @State private var endSentryTimeST = Date()
// @State private var startSentryTimeSN = Date()
// @State private var endSentryTimeSN = Date()

var body: some View {
    VStack(alignment: .center) {

//星期一************

        Toggle(isOn: $toggleStateM) {
            HStack{
            Spacer()
                Text("Monday")
            Spacer()
                Text(" \(startSentryTimeM.formatted(date: .omitted, time: .shortened))")
                Text("to")
                Text(" \(endSentryTimeM.formatted(date: .omitted, time: .shortened))")
            Spacer()
                }
        
            }
        .frame(width: 350, height: 35, alignment: .center)
        .padding(.leading, 20)

        if toggleStateM{
          HStack{
              
              VStack(alignment: .center){
                Text("Sentry Start Time")
                DatePicker("", selection: $startSentryTimeM, displayedComponents: .hourAndMinute)
                      .labelsHidden()
                      
                      
                }
                .padding(.trailing, 20)
                
              VStack(alignment: .center){
                
                  Text("Sentry End Time")
                  DatePicker("", selection: $endSentryTimeM, displayedComponents: .hourAndMinute)
                      .labelsHidden()
                      
                }
            }
      
        }

//星期二******************

        Toggle(isOn: $toggleStateT) {
            HStack{
            Spacer()
                Text("Tuesday")
            Spacer()
                Text(" \(startSentryTimeT.formatted(date: .omitted, time: .shortened))")
                Text("to")
                Text(" \(endSentryTimeT.formatted(date: .omitted, time: .shortened))")
            Spacer()
                    
          }
        }
        .frame(width: 350, height: 35, alignment: .center)
        .padding(.leading, 20)


          if toggleStateT{
            HStack{
            
                VStack(alignment: .center){
                    Text("Sentry Start Time")
                    DatePicker("", selection: $startSentryTimeT, displayedComponents: .hourAndMinute)
                        .labelsHidden()
            }
            .padding(.trailing, 20)
           
                VStack(alignment: .center){
                Text("Sentry End Time")
              DatePicker("", selection: $endSentryTimeT, displayedComponents: .hourAndMinute)
            .labelsHidden()
            }
            .padding(.leading, 20)
            }
          }

//星期三***************

          Toggle(isOn: $toggleStateW) {
            HStack{
            Spacer()
              }
              Text("Wedsnesday")
            Spacer()
              Text(" \(startSentryTimeW.formatted(date: .omitted, time: .shortened))")
              Text("to")
              Text(" \(endSentryTimeW.formatted(date: .omitted, time: .shortened))")
           Spacer()
          }

          .frame(width: 350, height: 35, alignment: .center)
          .padding(.leading, 20)
         
          
        if toggleStateW{
          HStack{
            
              VStack(alignment: .center){
            Text("Sentry Start Time")
            DatePicker("", selection: $startSentryTimeW, displayedComponents: .hourAndMinute)
          .labelsHidden()
            }.padding(.trailing, 20)
           
              VStack(alignment: .center){
                Text("Sentry End Time")
              DatePicker("", selection: $endSentryTimeW, displayedComponents: .hourAndMinute)
            .labelsHidden()
            }
            .padding(.leading, 20)
          }
      }

//星期四************

            Toggle(isOn: $toggleStateTH) {
                HStack{
                Spacer()
                    Text("Thursday")
                Spacer()
                    Text(" \(startSentryTimeTH.formatted(date: .omitted, time: .shortened))")
                    Text("to")
                    Text(" \(endSentryTimeTH.formatted(date: .omitted, time: .shortened))")
                Spacer()
                    }
                }
            .frame(width: 350, height: 35, alignment: .center)
            .padding(.leading, 20)

            if toggleStateTH{
              HStack{
                  
                  VStack(alignment: .center){
                    Text("Sentry Start Time")
                    DatePicker("", selection: $startSentryTimeTH, displayedComponents: .hourAndMinute)
                          .labelsHidden()
                    }
                    .padding(.trailing, 20)
                  VStack(alignment: .center){
                    Text("Sentry End Time")
                      DatePicker("", selection: $endSentryTimeTH, displayedComponents: .hourAndMinute)
                          .labelsHidden()
                    }
                    .padding(.leading, 20)
                }
            }

//星期五***************

            Toggle(isOn: $toggleStateF) {
                HStack{
                Spacer()
                    Text("Friday     ")
                Spacer()
                    Text(" \(startSentryTimeF.formatted(date: .omitted, time: .shortened))")
                    Text("to")
                    Text(" \(endSentryTimeF.formatted(date: .omitted, time: .shortened))")
                Spacer()
                    }
                }
            .frame(width: 350, height: 35, alignment: .center)
            .padding(.leading, 20)

            if toggleStateF{
              HStack{
                  
                  VStack(alignment: .center){
                    Text("Sentry Start Time")
                    DatePicker("", selection: $startSentryTimeF, displayedComponents: .hourAndMinute)
                          .labelsHidden()
                    }
                    .padding(.trailing, 20)
                  VStack(alignment: .center){
                    Text("Sentry End Time")
                      DatePicker("", selection: $endSentryTimeF, displayedComponents: .hourAndMinute)
                          .labelsHidden()
                    }
                    .padding(.leading, 20)
                  
                }
            }

//星期六******************

       /*   Toggle(isOn: $toggleStateST) {
            
            Text("Saturday" )
           
          }
          .padding(.bottom, -5)
          .padding(.leading, 15)
          .padding(.trailing, 20)
          if toggleStateM{
          HStack{
              
            VStack{
            Text("Sentry Start Time")
            DatePicker("", selection: $startSentryTimeST, displayedComponents: .hourAndMinute)
          .labelsHidden()
            }.padding(.trailing, 20)
           
            VStack{
                Text("Sentry End Time")
              DatePicker("", selection: $endSentryTimeST, displayedComponents: .hourAndMinute)
            .labelsHidden()
            }.padding(.leading, 20)
          }
        */
      }
      }

}

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

}

Answer 1

我已尝试将您的代码缩减为可管理的块，我编写的代码中可能存在错误。

我已将您个人的日子改为数据驱动，这样我们就可以重复视图，但具有不同的绑定

import SwiftUI
import Combine

class Sentry: ObservableObject {
  @Published var isOn: Bool = false
  let day: String
  @Published var startTime: Date = Date()
  @Published var finishTime: Date = Date()
  
  init(isOn: Bool, day: String, startTime: Date = Date(), finishTime: Date = Date()) {
    self.isOn = isOn
    self.day = day
    self.startTime = startTime
    self.finishTime = finishTime
  }
}

extension Sentry: Hashable {
  
  static func == (lhs: Sentry, rhs: Sentry) -> Bool {
    lhs.day == rhs.day
  }
  
  func hash(into hasher: inout Hasher) {
    hasher.combine(self.day)
  }
  
}

class Manager: ObservableObject {
  
  var cancellables = Set<AnyCancellable>()
  @Published var sentries: [Sentry] = []
  
  init(sentries: [Sentry]) {
    self.sentries = sentries
    
    self.sentries.forEach({ sentry in
      sentry.objectWillChange
        .receive(on: DispatchQueue.main).sink { (_) in
            self.objectWillChange.send()
        }
        .store(in: &cancellables)
    })
        
  }
}

struct TestView: View {
  
  @EnvironmentObject var manager: Manager
  
  var body: some View {
    
    VStack(alignment: .center) {
      ForEach(manager.sentries, id: \.self) { sentry in
        ToggleSwitch(sentry: sentry)
        if sentry.isOn {
          DatePickers(sentry: sentry)
        }
      }
    }
  }
  
}

struct ToggleSwitch: View {
  
  @ObservedObject var sentry: Sentry
  
  var body: some View {
    Toggle(isOn: $sentry.isOn) {
      HStack{
        Spacer()
        Text(sentry.day)
        Spacer()
        Text(" \(sentry.startTime.formatted(date: .omitted, time: .shortened))")
        Text("to")
        Text(" \(sentry.finishTime.formatted(date: .omitted, time: .shortened))")
        Spacer()
      }
    }
    .frame(width: 350, height: 35, alignment: .center)
    .padding(.leading, 20)
  }
  
}

struct DatePickers: View {
  
  @ObservedObject var sentry: Sentry
  
  var body: some View {
    HStack {
      VStack(alignment: .center){
        Text("Sentry Start Time")
        DatePicker("", selection: $sentry.startTime, displayedComponents: .hourAndMinute)
          .labelsHidden()
      }
      .padding(.trailing, 20)
      
      VStack(alignment: .center){
        Text("Sentry End Time")
        DatePicker("", selection: $sentry.finishTime, displayedComponents: .hourAndMinute)
          .labelsHidden()
      }
    }
  }
  
}

struct TestView_Previews: PreviewProvider {
  
  static var sentryMon = Sentry(isOn: true, day: "Monday")
  static var sentryTue = Sentry(isOn: false, day: "Tuesday")
  static var sentryWed = Sentry(isOn: false, day: "Wednesday")
  static var sentryThu = Sentry(isOn: false, day: "Thrusday")
  static var sentryFri = Sentry(isOn: false, day: "Friday")
  static var sentrySat = Sentry(isOn: false, day: "Saturday")
  static var sentrySun = Sentry(isOn: false, day: "Sunday")
  
  static var previews: some View {
    TestView()
      .environmentObject(Manager(sentries: [sentryMon, sentryTue, sentryWed, sentryThu, sentryFri, sentrySat, sentrySun]))
  }
}

我正在尝试创建一个包含下拉菜单的切换开关，其中包含开始和停止时间范围选择器。然后堆叠 7 个开关，代表一周中的几天

I am trying to create a toggle containing a dropdown with both a start and stop time range picker. Then stack 7 toggles representing days of the week

xcode

swiftui

toggle

dropdown

timepicker