【发布时间】：2021-11-23 07:25:17
【问题描述】：
我有一个游戏，我想在表格视图中显示历史。 该游戏可以与 4 名玩家一起玩。赢家/输家的结果可能在 2w/2l、3w/1l 或 1w/3l 之间变化。
因此，我创建了一个自定义单元格作为 XIB，我在堆栈视图中放置了 3 个标签（每个用于赢家和输家，所以总共 6 个标签），默认情况下我总是隐藏 2 个。然后，当我有多个赢家/输家时，我会取消隐藏它们并设置名称。
但不知何故，我的代码做了我不理解的事情。我试图调试我的代码，但如果它运行缓慢，它似乎没问题。没看懂。
我的Players 结构只是我的领域对象的一小部分。整个allPlayers 数组也只是虚拟数据，通常我从领域获取。
struct Players {
let round: Int
let name: String
let winner: Bool
let loser: Bool
}
所以我已经按如下标准设置了我的ViewController：
class ViewController: UIViewController {
@IBOutlet weak var tableView: UITableView!
let allPlayers: [Players] = [Players(round: 1, name: "Mike", winner: false, loser: true), // Round 1 2:2
Players(round: 1, name: "Peter", winner: false, loser: true),
Players(round: 1, name: "Tim", winner: true, loser: false),
Players(round: 1, name: "Levi", winner: true, loser: false),
Players(round: 2, name: "Mike", winner: false, loser: true), // Round 2 1:3
Players(round: 2, name: "Peter", winner: false, loser: true),
Players(round: 2, name: "Tim", winner: false, loser: true),
Players(round: 2, name: "Levi", winner: true, loser: false),
Players(round: 3, name: "Mike", winner: true, loser: false), // Round 3 3:1
Players(round: 3, name: "Peter", winner: true, loser: false),
Players(round: 3, name: "Tim", winner: true, loser: false),
Players(round: 3, name: "Levi", winner: false, loser: true),
Players(round: 4, name: "Mike", winner: false, loser: true), // Round 4 2:2
Players(round: 4, name: "Peter", winner: false, loser: true),
Players(round: 4, name: "Tim", winner: true, loser: false),
Players(round: 4, name: "Levi", winner: true, loser: false),
Players(round: 5, name: "Mike", winner: false, loser: true), // Round 5 1:3
Players(round: 5, name: "Peter", winner: false, loser: true),
Players(round: 5, name: "Tim", winner: false, loser: true),
Players(round: 5, name: "Levi", winner: true, loser: false),
Players(round: 6, name: "Mike", winner: true, loser: false), // Round 6 3:1
Players(round: 6, name: "Peter", winner: true, loser: false),
Players(round: 6, name: "Tim", winner: true, loser: false),
Players(round: 6, name: "Levi", winner: false, loser: true),
Players(round: 7, name: "Mike", winner: true, loser: false), // Round 7 3:1
Players(round: 7, name: "Peter", winner: true, loser: false),
Players(round: 7, name: "Tim", winner: true, loser: false),
Players(round: 7, name: "Levi", winner: false, loser: true),
Players(round: 8, name: "Mike", winner: false, loser: true), // Round 8 1:3
Players(round: 8, name: "Peter", winner: false, loser: true),
Players(round: 8, name: "Tim", winner: false, loser: true),
Players(round: 8, name: "Levi", winner: true, loser: false),
Players(round: 9, name: "Mike", winner: false, loser: true), // Round 9 1:3
Players(round: 9, name: "Peter", winner: false, loser: true),
Players(round: 9, name: "Tim", winner: false, loser: true),
Players(round: 9, name: "Levi", winner: true, loser: false),
Players(round: 10, name: "Mike", winner: false, loser: true), // Round 10 2:2
Players(round: 10, name: "Peter", winner: false, loser: true),
Players(round: 10, name: "Tim", winner: true, loser: false),
Players(round: 10, name: "Levi", winner: true, loser: false),
Players(round: 11, name: "Mike", winner: false, loser: true), // Round 11 2:2
Players(round: 11, name: "Peter", winner: false, loser: true),
Players(round: 11, name: "Tim", winner: true, loser: false),
Players(round: 11, name: "Levi", winner: true, loser: false),
Players(round: 12, name: "Mike", winner: true, loser: false), // Round 12 3:1
Players(round: 12, name: "Peter", winner: true, loser: false),
Players(round: 12, name: "Tim", winner: true, loser: false),
Players(round: 12, name: "Levi", winner: false, loser: true)]
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
let nib = UINib.init(nibName: "TableViewCell", bundle: nil)
self.tableView.register(nib, forCellReuseIdentifier: "winLooseCell")
}
}
因为我从 Realm 中获取数据，所以我创建了一个单独的类 handler 来管理结果，因此我只返回了获胜者/失败者姓名的数组。
class Handler {
var winners: [String] = []
var losers: [String] = []
func getWinners(round: Int,dataBase: [Players]) -> [String] {
// Filtercode is just boilerplate, is dunno by realm
let filtered = dataBase.filter{ dataBase in
return dataBase.round == round
}
for i in 0...filtered.count - 1 {
if filtered[i].winner {
winners.append(filtered[i].name)
}
}
return winners
}
func getLosers(round: Int,dataBase: [Players]) -> [String] {
// Filtercode is just boilerplate, is dunno by realm
let filtered = dataBase.filter{ dataBase in
return dataBase.round == round
}
for i in 0...filtered.count - 1{
if filtered[i].loser {
losers.append(filtered[i].name)
}
}
return losers
}
}
当然还有我的 tableView 扩展来创建整个东西
// MARK: Extension
extension ViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return (allPlayers.count / 4)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let handler = Handler()
if indexPath.row == 10 {
// do nothing - just for a debugging breakpoint
}
let cell = tableView.dequeueReusableCell(withIdentifier: "winLooseCell") as! TableViewCell
let winner = handler.getWinners(round: indexPath.row + 1, dataBase: allPlayers)
for i in 0...winner.count - 1 {
cell.winnerNameLabels[i].isHidden = false
cell.winnerNameLabels[i].text = winner[i]
}
let loser = handler.getLosers(round: indexPath.row + 1, dataBase: allPlayers)
for i in 0...loser.count - 1 {
cell.loserNameLabels[i].isHidden = false
cell.loserNameLabels[i].text = loser[i]
}
cell.roundLabel.text = "\(indexPath.row + 1)"
return cell
}
}
tableViewCell 的类
class TableViewCell: UITableViewCell {
@IBOutlet var winnerNameLabels: [UILabel]!
@IBOutlet var loserNameLabels: [UILabel]!
@IBOutlet weak var roundLabel: UILabel!
}
由于某种原因，在我加载模拟器后，我在第 11 轮中遇到了这种奇怪的行为
有人知道为什么以及如何解决这个问题吗？
【问题讨论】：
-
我很确定@matt 的答案是正确的，但是，您是否添加了断点并单步执行此循环
for i in 0...winner.count - 1中的代码以确保其迭代次数正确？同样对于更宽松的循环？包括这样的调试细节可以帮助我们缩小问题范围。
标签： swift uitableview realm