How to hide a swiftUI view by touching anywhere outside of it - swift

Question

I have a view that call an alert that is another smaller view, whenever the second View is shown, I want to hide it when clicking outside of it.
How can I do that?
struct AlertView: View{
let screenSize = UIScreen.main.bounds
#Binding var alertIsShown: Bool
var body: some View{
VStack{
Button("Cancel") {
self.alertIsShown=false
}
}.padding()
.frame(width: screenSize.width * 0.85, height: screenSize.height * 0.6)
.background(Color(red: 0.4627, green: 0.8392, blue: 1.0))
.clipShape(RoundedRectangle(cornerRadius: 20.0, style: .continuous))
.offset(y: alertIsShown ? 0 : screenSize.height)
.animation(.spring())
.shadow(color: Color(.white), radius: 6, x: -9, y: -0)
}
}
}
For the main view that call the alert:
struct MainView: View {
#State private var alertIsShown = false
#State var liveOrdersList: [String] = ["item-1", "item-2"]
var body: some View {
VStack{
NavigationView{
List{
ForEach(liveOrdersList, id: \.self) { order in
HStack {
VStack(alignment: .leading){
Text("\(order.totalPrice)")
}
Spacer()
Button("add") {
withAnimation(.linear(duration: 0.3)) {
alertIsShown.toggle()
}
}
}
}
}
}
}
}
if alertIsShown{ //here I call the aler
AlertView(alertIsShown: $alertIsShown)
}
}
The list of buttons call the alert view.
How can I hide it when tapping outside of it?

Answer 1

You could try this approach, using .simultaneousGesture(...), as shown in this example code, to hide the AlertView by touching anywhere outside of it.
struct ContentView: View {
var body: some View {
MainView()
}
}
struct MainView: View {
#State var alertIsShown = false
// for testing
#State var liveOrdersList: [String] = ["item-1", "item-2", "item-3", "item-4", "item-5"]
var body: some View {
NavigationView {
VStack {
List {
ForEach(liveOrdersList, id: \.self) { order in
HStack {
VStack(alignment: .leading) {
Text("\(order)")
}
Spacer()
Button("add") {
withAnimation(.linear(duration: 0.3)) {
alertIsShown.toggle()
}
}
}
}
}
// -- here
.simultaneousGesture(alertIsShown ? TapGesture().onEnded {
alertIsShown = false
} : nil)
if alertIsShown {
AlertView(alertIsShown: $alertIsShown)
}
}
}
}
}