Its document says openDocument can open a document at a specific URL. So I've saved a model as a JSON object with its URL and a bookmark as Data. With its security-scoped bookmark data resolved, I am able to open a document except that the app will crash right after opening a document. Console says
should only be called in the main thread
struct ContentView: View {
@EnvironmentObject var bookmarkViewModel: BookmarkViewModel
var body: some View {
VStack {
}
.onAppear {
loadBookmarks()
}
}
extension ContentView {
func loadBookmarks() {
print("1 \(Thread.current)") // NSMainThread
Task {
for bookmarkItem in bookmarkViewModel.bookmarkItems { // resolving a security-scoped bookmark
print("2 \(Thread.current)") // NSMainThread
if let _ = resolveBookmark(bookmarkData: bookmarkItem.bookmarkData) {
print("3 \(Thread.current)") // NSMainThread
do {
print("4 \(Thread.current)") // NSMainThread
try await openDocument(at: bookmarkItem.bookmarkURL)
print("5 \(Thread.current)") // NSMainThread
} catch {
print("\(error.localizedDescription)")
}
}
}
}
}
}
Well, the application is on the main thread. I've checked every line before and after opening a document with its URL. Call what on the main thread? This is confusing. Thanks.
class BookmarkViewModel: ObservableObject {
@Published var bookmarkItems: [BookmarkItem] = []
var defaultFileManager: FileManager {
return FileManager.default
}
var documentURL: URL? {
...
}
init() {
fetchBookmarkItems()
}
func fetchBookmarkItems() {
bookmarkItems.removeAll()
if let documentURL {
let bookmarkFolderURL = documentURL.appending(path: "MyApp").appending(path: "Bookmarks")
do {
let contents = try defaultFileManager.contentsOfDirectory(atPath: bookmarkFolderURL.path)
for content in contents {
...
let fileURL = bookmarkFolderURL.appending(path: content)
let data = try Data(contentsOf: fileURL)
let bookmarkItem = try JSONDecoder().decode(BookmarkItem.self, from: data)
bookmarkItems.append(bookmarkItem)
}
} catch {
print("Error fetching folder content: \(error.localizedDescription)")
}
}
}
}
struct BookmarkItem: Codable, Hashable {
let bookmarkURL: URL
let date: Date
let bookmarkData: Data
let open: Bool
}
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