在经过一段时间的SwiftUI后如何显示新视图

Question

所以我正在构建一个二十一点模拟器游戏，而现在我的问题是使其变得更加逼真。从我按下“打我”按钮开始，我希望在下一张卡上传之前有所延迟。类似地，当下一位玩家离开时，我也希望延迟。所以现在我有一个玩家视角和一个手牌视角。玩家和手牌都是可观察到的。

    var body: some View {
        HStack {
            VStack(alignment: .trailing, spacing: 0){
                ForEach(0..<self.player.hands.count, id: \.self) {
                    index in ZStack {
                        Spacer()
                        HandView.init(hand: self.player.hands[index])
                    }
                }
                Spacer().frame(height: 45)
                Text(self.player.id).bold().font(Font.system(size: 20))
                Spacer()
            }
            .padding(.all)
            if !player.isRobot{
                VStack{Button(action: {
                    self.player.requestCard()
                }, label: {
                    Text("Hit Me!")
                })
                    Button(action: {
                        self.player.handleInput(turn: turnPosibilities.stay)
                        self.player.objectWillChange.send()
                    }, label: {
                        Text("Stay")
                    })}
                    .offset(x: 10, y: 0)}
        }
    }

    @ObservedObject var hand:Hand
    var bust: some View {
        GeometryReader { geometry in
            Path { path in
                path.move(to: CGPoint.init(x: geometry.frame(in: .local).midX, y: CGFloat(geometry.frame(in: .local).midY)))
                path.addLine(to: CGPoint.init(x: geometry.frame(in: .local).minX, y: geometry.frame(in: .local).minY))
                path.addLine(to: CGPoint.init(x: geometry.frame(in: .local).minX, y: geometry.frame(in: .local).maxY))
                path.addLine(to: CGPoint.init(x: geometry.frame(in: .local).maxX, y: geometry.frame(in: .local).maxY))
                path.addLine(to: CGPoint.init(x: geometry.frame(in: .local).maxX, y: geometry.frame(in: .local).minY))
            }
            .fill(Color.red)
        }
    }

    var body: some View {
        ZStack
            {ForEach(0..<self.hand.cards.count, id: \.self){
                card in
                VStack(alignment: .leading, spacing: 2) {PlayingCardView(rank: self.hand.cards[card].rankRaw, suit: self.hand.cards[card].suit, isFaceUp: self.hand.cards[card].isFaceUp ).rotationEffect(Angle.init(degrees: Double(multiply(index: card, offset: 10))))
                    .offset(x: multiply(index: card, offset: 15), y: multiply(index: card, offset: 40))

                }
                }

        }
    }
}

        ZStack{
            if isFaceUp {
                Rectangle().frame(width: 130, height:182).foregroundColor(Color.init(#colorLiteral(red: 0.9999127984, green: 1, blue: 0.9998814464, alpha: 1))).cornerRadius(25).overlay(Image(self.suit.rawValue).resizable().aspectRatio(contentMode: .fit).padding(.all))
                Text(String(self.rank)).font(.custom("Poppins-SemiBoldItalic", size: 40)).offset(x: 29, y: -70)
                Text(String(self.rank)).font(.custom("Poppins-SemiBoldItalic", size: 40)).offset(x: 29, y: -70).rotationEffect(Angle.init(degrees: 180))
            }
            else {
                Rectangle().frame(width: 130, height:182).foregroundColor(Color.init(UIColor(red: 0.58, green: 0.65, blue: 0.65, alpha: 1.00)
                )).cornerRadius(25)
            }
        }.clipShape(RoundedRectangle(cornerRadius: 25)).overlay(RoundedRectangle(cornerRadius: 25).stroke(Color.black, lineWidth: 2))
    }

Answer 1

这里是可能的方法

VStack{Button(action: {
    DispatchQueue.main.asyncAfter(deadline: .now() + 1) { // 1 sec delay
         self.player.requestCard()
    }
}, label: {
    Text("Hit Me!")
})