Sheet is Only Presented Once in SwiftUI - swiftui

Question

I have an app which presents a sheet. It works for the first time but when I click on it again it does not work. I am making isPresented false when you dismiss a sheet but when I tap on the Filter button again, it does not show the sheet.
ContentView
struct ContentView: View {
#State private var isPresented: Bool = false
var body: some View {
NavigationView {
List(1...20, id: \.self) { index in
Text("\(index)")
}.listStyle(.plain)
.navigationTitle("Hotels")
.toolbar {
Button("Filters") {
isPresented = true
}
}
.sheet(isPresented: $isPresented) {
isPresented = false
} content: {
FilterView()
}
}
}
}
FilterView:
import SwiftUI
struct FilterView: View {
#Environment(\.presentationMode) private var presentationMode
var body: some View {
ZStack {
Text("FilterView")
Button {
// action
presentationMode.wrappedValue.dismiss()
} label: {
Text("Dismiss")
}
}
}
}
struct FilterView_Previews: PreviewProvider {
static var previews: some View {
FilterView()
}
}

Answer 1

A couple of things to note from my experience.
Firstly, when using the isPresented binding to show a sheet, you don't need to reset the bound value in a custom onDismiss handler to reset it to false - that's handled for you internally by SwiftUI as part of the dismiss action.
So your modifier can be simplified a little:
.sheet(isPresented: $isPresented) {
FilterView()
}
Secondly, when running an app in the Simulator I've noticed that when you come back to the main view after dismissing a sheet you have to interact with the app somehow before clicking on the toolbar button, or the action won't trigger.
In cases like this, just scrolling the list up or down a little would be enough, and then the toolbar button works as you'd expect.
I've not encountered the same thing while running apps on a physical device – whether that's because the bug isn't present, or just that it's a lot easier to interact with the app in some microscopic form of gesture, I couldn't say.