Question

更新

我收到错误消息：“错误！无法解码JSON：由于格式不正确，无法读取数据。”。请求中的JSON是

{"page":0,"pageSize":100,"totalPages":1,"numberOfElements":1,"totalElements":1,"hasPreviousPage":false,"hasNextPage":false,"content":[{"id":4554053904,"externalAccountId":null,"source":"PLAN","amount":1073741824,"reportId":null,"rowId":null,"timeCharged":1533427200000,"timeCreated":1533476043000}]}

为什么不起作用？我不知道如何得到答案...

我的代码和结构：

struct TodoItem: Decodable {
    let page: Int?
    let pageSize: Int?
    let totalPages: Int?
    let numberOfElements: Int?
    let totalElements: Int?
    let hasPreviousPage: Bool
    let hasNextPage: Bool
    let content: [content]



}

struct content: Decodable {
    let id: Int?
    let externalAccountId: String?
    let source: String?
    let amount: Int?
    let reportId: Int?
    let rowId: Int?
    let timeCharged: Int?
    let timeCreated: Int?
}
func decodeJson() {


   let jsonUrlString = "myurl.com"
    print(jsonUrlString)




    guard let url = URL(string: jsonUrlString) else { return }
    URLSession.shared.dataTask(with: url) { (mydata, response, error2) in
        guard let datos = mydata else { return }

        do {
            self.todoList = try JSONDecoder().decode([TodoItem].self, from: datos)
            DispatchQueue.main.async {
                self.tableView.reloadData()
            }





        } catch let jsonError {
            print("Error! Could not decode JSON: \(jsonError.localizedDescription)")
        }
    }.resume()

Answer 1

该问题与标题无关。

无论如何。您的JSON不是TodoItem的数组。

Answer 2

1-加载完成后应缓存数据，以免再次滚动到该单元格时重新加载
2-加载单元格0-> 10->的数据时可以显示全屏加载，并在完成所有单元格后重新加载tableview
3-您可以从服务器进行更新，而无需在应用程序中进行更新，只需一次请求即可加载许多项目
希望对您有用

无法解码JSON：数据格式不正确，因此无法读取

2 个答案: