从用户 ID 旁边的 UI 滑块获取值（将用户链接到部分编号？）

Question

我正在努力在我的应用程序中创建一个 'Rate' 功能，它可以吸引用户从外部 API 进行评分。然后我创建了一个 TableView，它添加了包含部分名称（用户名称）和 UISlider 的单元格。

我想做的是从 UISliders 收集数据以及与所在部分的用户关联的用户 ID，以便我可以调用 POST 操作 API 也发送评分数据。

这是我的代码：（作为记录，第一次使用 Swift，评论是我试图弄清楚如何做到这一点）。有什么想法吗？

import UIKit
import Alamofire


class RateViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet weak var submitButton: UIButton!
    @IBOutlet weak var activeSurveyLabel: UILabel!


    private var myTableView: UITableView!
    var usersToRate = [User]()
    var activeSurveyId: String?
    var rateData = [String: Int]()
    var sectionIdToUserId = [Int: String]()
    var userIdSection = [Int: String]()

    override func viewDidLoad() {
        super.viewDidLoad()

        submitButton.isHidden = true

        submitButton.addTarget(self, action: #selector(pressSubmitButton(button:)), for: UIControlEvents.touchUpInside)

        activeSurveyLabel.isHidden = false


        self.loadUsersToRate()


        Alamofire.request(RateRouter.getSurvey()).responseJSON { response in
            debugPrint(response)


            if let string = response.result.value as? [[String: Any]]{

                if string.count == 0 {
                    return
                }

                self.submitButton.isHidden = false
                self.activeSurveyLabel.isHidden = true

                for survey in string {
                    if let survey = Survey(json: survey) {
                        self.activeSurveyId = survey._id!
                        print(survey._id!)
                    }
                }


                //if there's a result, show slider bars for each person on the team with rating scales (except for the person logged in)
                //have a submit button with a post request for the votes

                let barHeight: CGFloat = UIApplication.shared.statusBarFrame.size.height
                let displayWidth: CGFloat = self.view.frame.width
                let displayHeight: CGFloat = barHeight * CGFloat(self.usersToRate.count * 5)

                self.myTableView = UITableView(frame: CGRect(x: 0, y: barHeight, width: displayWidth, height: displayHeight - barHeight))
                self.myTableView.register(UITableViewCell.self, forCellReuseIdentifier: "MyCell")
                self.myTableView.dataSource = self
                self.myTableView.delegate = self
                self.view.addSubview(self.myTableView)


            } else {
                print(response.result.error!)
                let label = UILabel()
                label.center = self.view.center
                label.text = "No Active Surveys"
                self.view.addSubview(label)
            }

        }




        // Do any additional setup after loading the view.
    }

    func loadUsersToRate() {
        Alamofire.request(RateRouter.getUsers()).responseJSON { response in
            guard let jsonArray = response.result.value as? [[String: Any]] else {
                print("didn't get array, yo")
                return
            }

            for item in jsonArray {
                if let user = User(json: item) {
                    self.usersToRate.append(user)

                    self.rateData.updateValue(5, forKey: user.userId!) //initialize user average data at 5 in case they don't change it
                    print (self.rateData)
                }
            }
        }
    }


    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        print("Num: \(indexPath.row)")
        print("Value: \(usersToRate[indexPath.row])")

    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 1
    }


    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {

        self.sectionIdToUserId.updateValue(usersToRate[section].userId!, forKey: section)
        print(self.sectionIdToUserId)
        return "\(usersToRate[section].name!)"
    }

    func numberOfSections(in tableView: UITableView) -> Int {
        return usersToRate.count
    }

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

        let slider = UISlider(frame: CGRect(x: 0, y:0, width: 400, height: 44))
        slider.isUserInteractionEnabled = true
        slider.minimumValue = 1
        slider.maximumValue = 10
        slider.value = 5
        slider.tag = indexPath.section
        slider.addTarget(self, action: #selector(sliderValueChange(sender:)), for: UIControlEvents.valueChanged)
        cell.addSubview(slider)


        return cell
    }

    func sliderValueChange(sender: UISlider) {
        //get slider value
        var currentValue = Int(sender.value)
        print(currentValue)

        //self.rateData.updateValue(currentValue, forKey: self.sectionIdToUserId.values[sender.])



        //get user id for that value
        //self.rateData.updateValue(currentValue, rateData[section])



       // self.rateData.updateValue(currentValue, forKey: 0)
    }

    func pressSubmitButton(button: UIButton) {


        for user in usersToRate {
          //   Alamofire.request(RateRouter.vote(voteFor: user.userId!, survey: activeSurveyId, rating:))
        }



    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destinationViewController.
        // Pass the selected object to the new view controller.
    }
    */

}

Answer 1

为了回答我自己的问题，我所做的是创建一个名为 'Votes' 的不同模型来存储每次投票的信息。

然后为了填充该数组，我根据部分 ID 在 tableView 中为滑块创建了一个标签，并使用它来更新当前值。

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

    let slider = UISlider(frame: CGRect(x: 0, y:0, width: cell.frame.width , height: 44))

    slider.tag = indexPath.section
    slider.addTarget(self, action: #selector(sliderValueChange(sender:)), for: UIControlEvents.valueChanged)
    cell.addSubview(slider)


    return cell
}

func sliderValueChange(sender: UISlider) {
    //get slider value
    var currentValue = Int(sender.value)
    print(currentValue)

    voteData[sender.tag].rating = currentValue
}

从用户 ID 旁边的 UI 滑块获取值（将用户链接到部分编号？）

Getting Values from UISliders alongside UserID (linking User to section number?)

tableview

uislider

alamofire

swift3