How to create Tab Bar and Notification icon by using SwiftUI.

tabBarNotificationIcon.swift

@State var selectedView = 0
    var position: CGFloat = 2
    var nTab: CGFloat = 4
    
    var body: some View {
        GeometryReader { geometry in
            ZStack(alignment: .bottomLeading) {
                TabView(selection: self.$selectedView) {
                    
                    HomeView()
                        .tabItem {
                            Image(systemName: "house.fill")
                            Text("Home")
                    }.tag(0)
                    
                    ListView()
                        .tabItem {
                            Image(systemName: "list.bullet")
                            Text("List")
                    }.tag(1)
                    
                    OrderView()
                        .tabItem {
                            Image(systemName: "bag.fill")
                            Text("Ordered")
                    }.tag(2)
                    
                    SettingsView()
                        .tabItem {
                            Image(systemName: "gear")
                            Text("Settings")
                    }.tag(3)
                }

               
                ZStack {
                  Rectangle()
                    .foregroundColor(.red)
                    .cornerRadius(8)

                    Text("5")
                        .foregroundColor(.white)
                        .font(Font.system(size: 12))
                    
                }
                .frame(width: 16, height: 16)
                .offset(x: ( ( 2.0 * position) - 0.95 ) * (geometry.size.width / ( 2.0 * nTab )) + 2.0, y: -30)
                .opacity(1.0)
                
            }
            
            
        }
    }