我有我的应用程序获取JSON数据并显示数据,但是当我尝试分段时,我会得到每个部分的重复项和太多部分。目标是每个州都是一个部分,下面列出了该州的每个奖金。这是我目前的代码:
的ViewController:
import UIKit
import os.log
class BonusListViewController: UITableViewController {
var bonuses = [JsonFile.JsonBonuses]()
override func viewDidLoad() {
super.viewDidLoad()
//MARK: Trigger JSON Download
downloadJSON {
}
}
// MARK: - Table View Configuration
// MARK: Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
print("Found \(bonuses.count) sections.")
return bonuses.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
print("Found \(bonuses[section].bonusCode.count) rows in section.")
return bonuses[section].bonusCode.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell(style: .default, reuseIdentifier: nil)
cell.textLabel?.text = bonuses[indexPath.section].name.capitalized
return cell
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
performSegue(withIdentifier: "showDetail", sender: self)
}
// MARK: - Table View Header
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 30
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return bonuses[section].state
}
override func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 3
}
// MARK: Functions
// MARK: - Download JSON from ToH webserver
func downloadJSON(completed: @escaping () -> ()) {
let url = URL(string: "http://tourofhonor.com/BonusData.json")
URLSession.shared.dataTask(with: url!) { [weak self] (data, response, error) in
if error == nil {
do {
let posts = try JSONDecoder().decode(JsonFile.self, from: data!)
DispatchQueue.main.async {
completed()
}
print("JSON Version \(posts.meta.version) loaded.")
print(posts.bonuses.map {$0.bonusCode})
self?.bonuses = posts.bonuses
DispatchQueue.main.async {
//reload table in the main queue
self?.tableView.reloadData()
}
} catch {
print("JSON Download Failed")
}
}
}.resume()
}
// MARK: - Navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let destination = segue.destination as? BonusDetailViewController {
destination.bonus = bonuses[(tableView.indexPathForSelectedRow?.row)!]
}
}
}
JsonFile.swift只是一个结构:
import Foundation
struct JsonFile: Codable {
struct Meta: Codable {
let fileName: String
let version: String
}
struct JsonBonuses: Codable {
let bonusCode: String
let category: String
let name: String
let value: Int
let city: String
let state: String
let flavor: String
let imageName: String
}
let meta: Meta
let bonuses: [JsonBonuses]
}
JSON文件包含两个状态和总共9个条目。我的打印报表显示它找到了9个部分,每个部分有3行。当我尝试将return bonuses.count
设置为return bonuses.state.count
之类的内容时,我收到一条错误,上面写着“类型的值'[JsonFile.JsonBonuses]”没有成员'state'。“但我的结构中显然有一个“状态”项目。