[英]Save selected items in array of objects to UserDefaults in swift 4
[英]How to save a server response array in UserDefaults for later use in Swift?
当用户登录时,我从服务器收到包含以下数组的答案:
{"answer":{"id":26,"username":"iosuser","address":"iosios","phone_number":"123123123","email":"gmail@gmail.com","created_at":"2019-02-02 12:42:50","updated_at":"2019-02-02 21:40:29","provider_id":"1","is_loged_in":1,"user_id":"24","user_type":1}}
如何将该数组的数据保存在userdefaults中,并稍后在配置文件页面中使用?
任何帮助,不胜感激。
首先,不建议将其保存在userDefault中,您可以使用coredata / realm,并且内容是包含数组的字典,但是您可以
struct Root: Codable {
let answer: Answer
}
struct Answer: Codable {
let id: Int
let username, address, phoneNumber, email: String
let createdAt, updatedAt, providerID: String
let isLogedIn: Int
let userID: String
let userType: Int
enum CodingKeys: String, CodingKey {
case id, username, address
case phoneNumber = "phone_number"
case email
case createdAt = "created_at"
case updatedAt = "updated_at"
case providerID = "provider_id"
case isLogedIn = "is_loged_in"
case userID = "user_id"
case userType = "user_type"
}
}
UserDefaults.standard.set(data,forKey:"AnyKey")
然后读取数据并
let res = try? JSONDecoder().decode(Root.self,from:data)
如果只需要剥离阵列,则
do {
let tr = try JSONSerialization.jsonObject(with:data) as! [String:Any]
let arr = tr["answer"] as! [Any]
let ansData = try JSONSerialization.data(withJSONObject:arr, options:[])
UserDefaults.standard.set(ansData,forKey:"AnyKey")
} catch { print(error) }
之后,像
guard let data = UserDefaults.standard.data(forKey:"AnyKey") else { return }
let res = try? JSONDecoder().decode([Answer].self,from:data)
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