UIImage+Codable.swift

uiimage_codable.swift

extension UIImage: Codable {
  
    // works
  
    public func encode(to encoder: Encoder) throws {
        var container = encoder.singleValueContainer()
        try container.encode(pngData()!)
    }

    // does not compile, "required' initializer must be declared directly in class 'UIImage' (not in an extension)"
  
    public required init(from decoder: Decoder) throws {
        let container = try decoder.singleValueContainer()
        self.init(data: try container.decode(Data.self))!
    }
}