A simple alert view in SwiftUI.

SwiftUIAlertView.swift

import SwiftUI

struct PopoutAlertView: View {
    let lightTapticGenerator = UIImpactFeedbackGenerator(style:.light)
    
    @State private var isHidden = true
    
    var title = "Alert"
    var content = "Content here"
    var tintColor = UIColor.red
    
    var onTapButtonCancel: (() -> Void)?
    let onTapButtonOk: () -> Void
    
    var body: some View {
        ZStack {
            RoundedRectangle(cornerRadius: 15, style: .continuous)
                .shadow(color: Color.black.opacity(0.2), radius: 10)
                .foregroundColor(Color(UIColor.systemBackground))
                .layoutPriority(-1)
            VStack(spacing: 0){
                Group{
                    Text(title)
                        .font(.headline)
                        .padding(.top, 5)
                    Text(content)
                        .font(.body)
                        .lineLimit(nil)
                        .fixedSize(horizontal: false, vertical: true)
                }
                .padding()
                .padding(.leading, 10)
                .padding(.trailing, 10)
                .foregroundColor(Color.black)
                HStack {
                    if onTapButtonCancel != nil {
                        Button(action: {
                            withAnimation(.linear(duration: 0.2)) {
                                self.isHidden = true
                            }
                            lightTapticGenerator.impactOccurred()
                            DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.2, execute: {
                                self.onTapButtonCancel?()
                            })
                        }, label: {
                            RoundedRectangle(cornerRadius: 10, style: .continuous)
                                .foregroundColor(.gray)
                                .frame(height: 40)
                                .overlay(
                                    Text("Cancel").foregroundColor(.white)
                            )
                        })
                    }
                    Button(action: {
                        withAnimation(.linear(duration: 0.2)) {
                            self.isHidden = true
                        }
                        lightTapticGenerator.impactOccurred()
                        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.2, execute: {
                            self.onTapButtonOk()
                        })
                    }, label: {
                    RoundedRectangle(cornerRadius: 10, style: .continuous)
                        .foregroundColor(Color(tintColor))
                        .frame(height: 40)
                        .overlay(
                            Text("OK").foregroundColor(.white)
                        )
                    })
                }.padding()
            }
        }
        .frame(minWidth: 300, maxWidth: 400)
        .padding(50)
        .opacity(isHidden ? 0 : 1)
        .scaleEffect(isHidden ? 0.95 : 1)
        .onAppear(perform: {
            withAnimation(.linear(duration: 0.2)) {
                self.isHidden = false
            }
        })
    }
}

struct PopoutAlertView_Previews: PreviewProvider {
    static var previews: some View {
        PopoutAlertView(onTapButtonCancel: {
            
        }, onTapButtonOk: {
            
        })
    }
}