SwiftUI Animation Slide In and Out - animation

Question

I have a View that will display over another View. The view animation slides in from the right perfectly, but when I click on the Close button, the view disappears without the desired animation of sliding back to the right before disappearing.
I have tried using .opacity(self.isShowing ? 1 : 0), but then the View fades in and out, I need it to slide in and out. Other variations have not produced the desired results.
What am I doing wrong? Any guidance, even a duplicate solution (that I could not find) would be greatly appreciated.
struct NotificationView<parentView>: View where parentView: View {
#Binding var isShowing: Bool
let parentView: () -> parentView
var body: some View {
GeometryReader { geometry in
ZStack(alignment: .center) {
self.parentView()
if(self.isShowing == true){
VStack {
Text("This is a test view\n")
Button(action: {
self.isShowing.toggle()
}) {
Text("Close")
}
}
.frame(width: geometry.size.width, height: geometry.size.height)
.background(Color(UIColor.systemBackground))
// .opacity(self.isShowing ? 1 : 0)
.transition(.move(edge: self.isShowing ? .trailing : .leading))
.animation(Animation.easeInOut(duration: 1.0))
}
}
}
}
}

Answer 1

Move conditional part into container and add animation to container, so it will animate content, like
var body: some View {
GeometryReader { geometry in
ZStack(alignment: .center) {
self.parentView()
VStack { // << here !!
if(self.isShowing == true){
VStack {
Text("This is a test view\n")
Button(action: {
self.isShowing.toggle()
}) {
Text("Close")
}
}
.frame(width: geometry.size.width, height: geometry.size.height)
.background(Color(UIColor.systemBackground))
.transition(.move(edge: self.isShowing ? .trailing : .leading))
}
}.animation(Animation.easeInOut(duration: 1.0)) // << here !!
}
}
}