Working code: Save data by NSKeyedArchiver and Read data from NSKeyedUnarchiver
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | import SwiftUIstruct SwiftUIView: View { let filename = "tmp.txt" @State var savedContent: String = "" @State var readContent: String = "" var body: some View { VStack { HStack { TextField("Type something to save", text: $savedContent) Spacer() Text("Save") .onTapGesture { save() } } .padding() .background(Color.green) HStack { Text(readContent) Spacer() Text("Read") .onTapGesture { read() } } .padding() .background(Color.yellow) } } func getDocumentsDirectory() -> URL { let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask) return paths[0] } func read() { let fullPath = getDocumentsDirectory().appendingPathComponent(filename) do { let data = try Data(contentsOf: fullPath) do { readContent = try NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(data) as! String } catch { print("Couldn't read file.") } } catch { print("couldn't read the data") } } func save() { let fullPath = getDocumentsDirectory().appendingPathComponent(filename) do { let data = try NSKeyedArchiver.archivedData(withRootObject: savedContent, requiringSecureCoding: false) try data.write(to: fullPath) } catch { print("Couldn't write file") } } } |