Crash while dismissing a view that hasn't been edited - SwiftUI - ios

Question

I'm building an iOS app with SwiftUI. When I click the "done" button, and the entry property is not nil, and I have not used the DatePicker TextField or TextView, I get the following runtime error in AppDelegate:
Thread 1: EXC_BAD_ACCESS (code=2, address=0x7ffee2a83fe8)
Here is my code:
import SwiftUI
struct EditView: View {
#State var entry: Entry?
#ObservedObject var entries: Entries
#State var newDate: Date
#State var newTitle: String
#State var newBody: String
#Environment(\.presentationMode) var presentationMode
init(entries: Entries, entry: Entry?) {
UIScrollView.appearance().keyboardDismissMode = .onDrag
_entry = .init(initialValue: entry)
_entries = .init(initialValue: entries)
_newDate = .init(initialValue: entry?.date ?? Date())
_newTitle = .init(initialValue: entry?.title ?? "")
_newBody = .init(initialValue: entry?.body ?? "")
}
var body: some View {
GeometryReader { geometry in
Form {
Section {
DatePicker("Date", selection: self.$newDate, in: ...Date(), displayedComponents: .date)
.labelsHidden()
}
Section {
TextField("Title (optional)", text: self.$newTitle)
TextView(placeholder: "Entry", text: self.$newBody)
.frame(width: geometry.size.width, height: 250, alignment: .topLeading)
}
}
}
.navigationBarItems(trailing:
Button("Done") {
if let entry = self.entry {
if let index = self.entries.list.firstIndex(of: entry) {
self.entries.list[index] = Entry(date: self.newDate, title: self.newTitle, body: self.newBody)
}
} else {
self.entries.list.append(Entry(date: self.newDate, title: self.newTitle, body: self.newBody))
}
self.presentationMode.wrappedValue.dismiss()
})
}
}
import Foundation
class Entries: ObservableObject {
#Published var list = [Entry]()
}
class Entry: ObservableObject, Identifiable, Equatable {
static func == (lhs: Entry, rhs: Entry) -> Bool {
return lhs.id == rhs.id
}
let id = UUID()
#Published var date: Date
var dateString: String {
let formatter = DateFormatter()
formatter.dateStyle = .medium
formatter.timeStyle = .none
return formatter.string(from: self.date)
}
#Published var title: String
#Published var body: String
init(date: Date, title: String, body: String) {
self.date = date
self.title = title
self.body = body
}
static let example = Entry(date: Date(), title: "I wrote some swift today", body: "Today I wrote some swift for an app I'm developing. It was very fun.")
When I remove the self.presentationMode.wrappedValue.dismiss() line, the problem goes away. Though, I need that line to dismiss the view. Why would this be happening, and how can I fix it? Please forgive me if my code is a complete mess. Thank you!

Answer 1

It looks like it tries to update during dismissing, try to postpone dismiss a bit
DispatchQueue.main.async { // defer to next event
self.presentationMode.wrappedValue.dismiss()
}