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ios - 如何使用 Swift 在 UItableView 中显示订单部分列表

In lại Tác giả: Walker 123 更新时间：2023-11-28 23:28:14 25 4
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tôi ở đâyCodable的帮助下从JSON获取数据并加载到TableView中。在这里，我收到 JSON multiple array，每个数组都有不同的键名称。我在 phần 的 tableview 中显示的键名。现在，问题是 JSON 数组显示了正确的顺序列表，但由于 dictionary 存储，我在 tableview 结果中得到了 unordered 列表。我需要显示相同的 order，即 JSON 显示。

可编码

struct Root : Decodable {
    let status : Bool
    let sections : [Section]

    private enum CodingKeys : String, CodingKey { case status, data }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        status = try container.decode(Bool.self, forKey: .status)
        let data = try container.decode([String:[Result]].self, forKey: .data)
        //sections = data.map{ Section(title: $0.key, result: $0.value) }
        sections = data.compactMap{ return $0.value.isEmpty ? nil : Section(title: $0.key, result: $0.value) }
    }
}

struct Section {
    let title : String
    var result : [Result]
}

struct Result : Decodable {
    let id, name, date : String
    let group : [String]
}

表格 View 

// MARK: UITableview Delegates

func numberOfSections(in tableView: UITableView) -> Int {
    return isFiltering ? filteredSections.count : sections.count
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    let currentSection = isFiltering ? filteredSections[section] : sections[section]
    return currentSection.result.count
}

func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    return isFiltering ? filteredSections[section].title : sections[section].title
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier, for: indexPath) as! MyCustomCell
    let section = isFiltering ? filteredSections[indexPath.section] : sections[indexPath.section]
    let item = section.result[indexPath.row]
    cell.nameLabel.text = item.name
    return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    //print("You tapped cell number \(indexPath.row).")
    let section = isFiltering ? filteredSections[indexPath.section] : sections[indexPath.section]
    let item = section.result[indexPath.row]
    print("\(item)")
}

câu trả lời hay nhất

您不能对键进行排序，但可以定义键顺序

let keyOrder = ["Overdue", "Today", "Tomorrow", "Nextweek", "Future"]

struct Root : Decodable {
    let status : Bool
    let sections : [Section]

    private enum CodingKeys : String, CodingKey { case status, data }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        status = try container.decode(Bool.self, forKey: .status)
        let data = try container.decode([String:[Result]].self, forKey: .data)
        sections = keyOrder.compactMap({ key -> Section? in
            guard let section = data[key], !section.isEmpty else { return nil }
            return Section(title: key, result: section)
        })
    }
}

您的 TableView 数据源和委托(delegate)方法看起来很熟悉

关于ios - 如何使用 Swift 在 UItableView 中显示订单部分列表，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57962349/

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Walker 123
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