Question

这是我的模特。

 enum AnswerType:Int
    {
        case AnswerRadioButton = 1
        case AnswerCheckboxButton
        case AnswerSmileyButton
        case AnswerStarRatingButton
        case AnswerTextButton
    }


    class NH_QuestionListModel: NSObject {

        var dataListArray33:[NH_OptionsModel] = []


        var id:Int!
        var question:String!
        var buttontype:String!
        var options:[String]?
        var v:String?
        var answerType:NHAnswerType?


        var optionsModelArray:[OptionsModel] = []
        init(dictionary :JSONDictionary) {

            guard   let question = dictionary["question"] as? String,
                let typebutton = dictionary["button_type"] as? String,

                    let id = dictionary["id"] as? Int
                 else {
                    return

            }
           // (myString as NSString).integerValue


            self.answerType = AnswerType(rawValue: Int(typebutton)!)
            print(self.answerType?.rawValue)


            if let options = dictionary["options"] as? [String]{
                print(options)

               print(options)


                for values in options{

                    print(values)

                    let optionmodel = OptionsModel(values: values)
                    self.optionsModelArray.append(optionmodel)

                }


            }


            self.buttontype = typebutton
            self.question = question
            self.id = id

                       }

在viewcontroller中，cellforrowatindex如下。

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let model = questionViewModel.titleForHeaderInSection(atsection: indexPath.row)
       // print(model.answerType?.hashValue)
        print(model.answerType)
        print(model.answerType?.rawValue)

       // questionViewModel.items = model.answerType
     let value = model.answerType?.rawValue
    let v =    model.answerType

       // let item = model.answerType
        switch (value) {
        case 0.0:
            if let cell = tableView.dequeueReusableCell(withIdentifier: NH_RadioTypeCell.identifier, for: indexPath) as? NH_RadioTypeCell {
              //  cell.item = item
                return cell
            }
            return UITableViewCell()
        }

}

因此，根据

`Print(model.answerType) = ProjectName.AnswerType.AnswerRadioButton`

我有Tableview.in，不同类型的单元格用于显示。从这里我只需要得到单词AnswerRadioButton以便切换大小写。如果TYPE是AnswerRadioButton，则显示cell1.ELSE每个类型的单元格都应该在表格视图中查看

怎么办？

Answer 1

您应该打开model.answerType，而不是rawValue。在下面的答案中，请注意每种情况下的后缀?是必需的，因为model.answerType是可选的。

switch model.answerType {

case AnswerRadioButton?:  

    // OK to force unwrap here as it's a programmer error if it fails
    return tableView.dequeueReusableCell(withIdentifier: NH_RadioTypeCell.identifier, for: indexPath) as! NH_RadioTypeCell

case AnswerCheckboxButton?:
   // return cell

case // etc
default:
    return UITableViewCell()
}

如果您声明

var answerType: NHAnswerType = .AnswerRadioButton //or some other default case

然后您可以删除?后缀和default:大小写…

switch model.answerType {

case AnswerRadioButton:  

    // OK to force unwrap here as it's a programmer error if it fails
    return tableView.dequeueReusableCell(withIdentifier: NH_RadioTypeCell.identifier, for: indexPath) as! NH_RadioTypeCell

case AnswerCheckboxButton:
   // return cell

case // etc
}

另外，您的枚举应真正删除重复的Answer，并以小写开头……

enum AnswerType:Int
{
    case radioButton = 1
    case checkboxButton
    case smileyButton
    case starRatingButton
    case textButton
}

Answer 2

您要基于AnswerType出队适当的单元格

可能最简单的方法是使用String rawValue并将单元格重用标识符设置为这些字符串（请注意，按照惯例，枚举大小写应以小写字母和单词开头answer是多余的

enum AnswerType:String
{
    case radioButton = "RadioButton"
    case checkboxButton = "CheckboxButton"
    case smileyButton = "SmileyButton"
    case starRatingButton = "StarRatingButton"
    case textButton = "TextButton"
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let model = questionViewModel.titleForHeaderInSection(atsection: indexPath.row)

    let answerType = model.answerType ?? .textButton // Why is answerType an optional? Surely questions *must* have an answerType

    let cell = tableView.dequeueReusableCell(withIdentifier:answerType.rawValue, for: indexPath)

    return cell
}

这有两个问题：

您在JSON中使用整数原始值，因此您可能无法更改它。
您可能需要根据内容不同地自定义每个单元，因此您不能使用单个出队。

因此，您可以使用类似的开关，但是可以通过使用枚举用例而不是原始值来使其更简单明了：

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let model = questionViewModel.titleForHeaderInSection(atsection: indexPath.row)

    switch (model.answerType) {
        case .radioButton:
            let cell = tableView.dequeueReusableCell(withIdentifier: NH_RadioTypeCell.identifier, for: indexPath) as! NH_RadioTypeCell 
            return cell
        case .checkboxButton:
            let cell = tableView.dequeueReusableCell(withIdentifier: NH_CheckboxTypeCell.identifier, for: indexPath) as! NH_CheckboxTypeCell 
            return cell 
        ...
        default:
            return UITableViewCell()
    }
}

如何获得对象的价值

2 个答案: