Why am I getting Cannot convert value of type Bool to expected argument type String - swift

Question

Getting several "Cannot convert value of type Bool to expected argument type String" errors. The method for encoding expects a string but it is getting a Bool?
Here is the code. See the attached image for errors.
import Foundation
class Restaurant {
var name = ""
var item = ""
var location = ""
var image = ""
var isVisited = false
var phone = ""
var rating = ""
init(name: String, item: String, location: String, phone: String, image: String, isVisited: Bool) {
self.name = name
self.item = item
self.location = location
self.phone = phone
self.image = image
self.isVisited = isVisited
}
class func makeNewsItem(_ notificationDictionary: [String: AnyObject]) -> Restaurant? {
if let name = notificationDictionary["name"] as? String,
let phone = notificationDictionary["phone"] as? String,
let location = notificationDictionary["location"] as? String {
let date = Date()
let image = ""
let visited = false
let item = ""
let newsItem = Restaurant(name: name, item: item, location: location, phone: phone, image: image, isVisited: visited)
NotificationCenter.default.post(name: Notification.Name(rawValue: RestaurantTableViewController.RefreshNewsFeedNotification), object: self)
return newsItem
}
return nil
}
}
extension Restaurant: NSCoding {
struct CodingKeys {
static var Name = "name"
static var Item = "item"
static var Location = "location"
static var Image = "image"
static var IsVisited:Bool = false
static var Phone = "phone"
static var Rating = "rating"
}
convenience init?(coder aDecoder: NSCoder) {
if let name = aDecoder.decodeObject(forKey: CodingKeys.Name) as? String,
let location = aDecoder.decodeObject(forKey: CodingKeys.Location) as? Date,
let phone = aDecoder.decodeObject(forKey: CodingKeys.Phone) as? String {
let date = Date()
let image = aDecoder.decodeObject(forKey: CodingKeys.Image) as? String
let visited:Bool = aDecoder.decodeBool(forKey: CodingKeys.IsVisited) as? String
let item = aDecoder.decodeObject(forKey: CodingKeys.Item) as? String
self.init(name: name, item: item, location: location, phone: phone, image: image, isVisited: visited)
} else {
return nil
}
}
func encode(with aCoder: NSCoder) {
aCoder.encode(name, forKey: CodingKeys.Name)
aCoder.encode(location, forKey: CodingKeys.Location)
aCoder.encode(phone, forKey: CodingKeys.Phone)
aCoder.encode(item, forKey: CodingKeys.Item)
aCoder.encode(image, forKey: CodingKeys.Image)
aCoder.encode(isVisited, forKey: CodingKeys.IsVisited)
aCoder.encode(rating, forKey: CodingKeys.Rating)
}
}

Answer 1

You can´t add a bool value to the forKey. This has to be a string value, so change it from:
aCoder.encode(isVisited, forKey: CodingKeys.IsVisited)
To:
aCoder.encode(isVisited, forKey: "IsVisited")
Same for:
let visited:Bool = aDecoder.decodeBool(forKey: CodingKeys.IsVisited) as? String
To:
let visited:Bool = aDecoder.decodeBool(forKey: "IsVisited") // note, no need for as? String here