[英]Swift 4: Save and retrieve an array of custom objects (with nested custom objects) to UserDefaults
[英]Save selected items in array of objects to UserDefaults in swift 4
我已經解碼了Json的結構,現在我有了一個對象數組,每個對象都有一些值,所以我希望當用戶選擇集合中的項目時查看數組中的所選對象追加到UserDefaults中的對象數組中,我讀過類似的問題,所以我使用了下面的這個功能,但是不起作用
@objc func likeOrDislike (_ sender : UIButton!) {
let arrays = UserDefaults.standard.value(forKey: "Liked") as? [ListsModel.ResultValue]
print(arrays as Any)
var items = arrays
let item = self.adv.resultValue[sender.tag]
if arrays != nil {
if items!.contains(where: {($0.id == item.id)}) {
items!.filter({($0.id == item.id)})
} else {
items!.append(item)
}
} else {
items = [item]
}
UserDefaults.standard.setValue(items, forKey: "Liked")
UserDefaults.standard.synchronize()
}
這是我用來解碼的模型
public class ListsModel {
struct Response : Decodable {
var resultValue : [ResultValue]
}
struct ResultValue : Decodable {
let id : String?
let title : String?
let user_id : String?
let username : String?
let user_image : String?
let release_date : String?
let start_date : String?
let salary : String?
let salary_id : String?
let work_field_id : String?
let adv_type_id : String?
let work_field : String?
let description : String?
let adv_base_id : String?
let is_spec : String?
let status : String?
let p_expire_date : String?
}
}
通過stringify將所有模型對象轉換為字符串,然后存儲到用戶默認對象並在您要使用的位置使用。
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