Question

我创建了一个从JSON文件填充的数组。当我尝试用数组的项目填充表格视图时，即使indexPath.row返回正确，它也会重复显示最后一条记录。

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return leagueStandingsModelArray.count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cellTeam", for: indexPath)

        let team = self.leagueStandingsModelArray[indexPath.row]

        cell.textLabel?.text = String(team.teamId)
        print(team.teamName)
        print(indexPath.row)

        return cell
    }

在调试窗口上，这是我得到的结果：

有我打印的数组项

1 -- Santos -- 32

2 -- Palmeiras -- 28

3 -- Flamengo -- 24

4 -- Atletico-MG -- 24

这是我从下面这两行得到的回报

print(team.teamName)

print(indexPath.row)

Atletico-MG

0

Atletico-MG

1

Atletico-MG

2

Atletico-MG

3

应该打印前四支球队，而不是四四次。

完整代码

导入UIKit 进口Alamofire 导入SwiftyJSON

Class LeagueOverviewViewController类：UIViewController，UITableViewDataSource，UITableViewDelegate {

let leagueModel = LeagueIdModel()
var leagueParams = LeagueParametersModel()
var leagueStandingsModelArray = [LeagueStandingsModel]()

var urls = URLs()

@IBOutlet weak var standingsTableView: UITableView!

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return leagueStandingsModelArray.count
}

func tableView(_ tableView: UITableView, cellForRowAt  indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cellTeam", for: indexPath)

    let team = self.leagueStandingsModelArray[indexPath.row]

    cell.textLabel?.text = String(team.teamId)
    print(leagueStandingsModelArray[0].teamName)
    print(leagueStandingsModelArray[1].teamName)
    print(leagueStandingsModelArray[2].teamName)

    return cell
}

override func viewDidLoad() {
    super.viewDidLoad()

    getLeagueIdJSON(country: leagueParams.country, season: leagueParams.season)


    standingsTableView.delegate = self
    standingsTableView.dataSource = self
}

//GET THE JSON FILE TO RETRIEVE LEAGUE ID USING COUNTRY AND SEASON AS PARAMETERS
func getLeagueIdJSON (country: String, season: Int) {

    let headers = Headers().getHeaders()
    let url = urls.getLeagueUrlByCountryAndSeason(country: leagueParams.country, season: leagueParams.season)

    Alamofire.request(url, method: .get, parameters: nil, encoding: URLEncoding.default, headers: headers).responseJSON {
        response in
        if response.result.isSuccess {
            let leagueJSON = JSON(response.result.value!)

            self.getLeagueId(json: leagueJSON, country: self.leagueParams.country, season: self.leagueParams.season)
            self.getLeagueStandings(leagueId: self.leagueModel.leagueId)

        }
    }
}


//GET LEAGUE_ID FROM JSON FILE RETRIEVED
func getLeagueId(json: JSON, country: String, season: Int) {

    var leagueId = 0

    if country == "gb" {

        for league in json["api"]["leagues"].arrayValue {
            if league["name"].stringValue == "Premier League" {
                leagueId = league["league_id"].intValue
            }
        }
    }
    else if country == "br" {

        for league in json["api"]["leagues"].arrayValue {
            if league["name"].stringValue == "Serie A" {
                leagueId = league["league_id"].intValue
            }
        }
    }

    leagueModel.leagueId = leagueId
}

//GET LEAGUE STANDINGS FROM A LEAGUE ID (TOP 4)
func getLeagueStandings (leagueId: Int) {

    let headers = Headers().getHeaders()
    let url = urls.getLeagueStandingsUrl(leagueId: leagueId)
    let leagueStandingsModel = LeagueStandingsModel()
    var counter = 0

    Alamofire.request(url, method: .get, parameters: nil, encoding: URLEncoding.default, headers: headers).responseJSON {
        response in
        if response.result.isSuccess {
            let standingsJSON = JSON(response.result.value!)

            for standings in standingsJSON["api"]["standings"][counter].arrayValue {
                if counter <= 3 {
                    leagueStandingsModel.teamId = standings["team_id"].intValue
                    leagueStandingsModel.rank = standings["rank"].intValue
                    leagueStandingsModel.teamName = standings["teamName"].stringValue
                    leagueStandingsModel.points = standings["points"].intValue
                    leagueStandingsModel.matchesPlayed = standings["all"]["matchsPlayed"].intValue
                    leagueStandingsModel.win = standings["all"]["win"].intValue
                    leagueStandingsModel.draw = standings["all"]["draw"].intValue
                    leagueStandingsModel.lose = standings["all"]["lose"].intValue
                    leagueStandingsModel.goalsFor = standings["all"]["goalsFor"].intValue
                    leagueStandingsModel.goalsAgainst = standings["all"]["goalsAgainst"].intValue

                    self.leagueStandingsModelArray.append(leagueStandingsModel)

                    let standings = String(self.leagueStandingsModelArray[counter].rank) + " -- " +
                        self.leagueStandingsModelArray[counter].teamName + " -- " +
                        String(self.leagueStandingsModelArray[counter].points)

                    print(standings)

                    counter += 1
                }
            }
        }
        self.standingsTableView.reloadData()
    }
}

}

Answer 1

代替重新使用let leagueStandingsModel = LeagueStandingsModel()在填充对象之前创建新对象：

if counter <= 3 {
var leagueStandingsModel = LeagueStandingsModel()
leagueStandingsModel.teamId = standings["team_id"].intValue
...

TableViewCell重复显示数组中的最后一项

1 个答案: