如何在indexpath的行中显示数据模型内容?

时间:2017-03-12 14:09:54

标签: ios swift uitableview swift3 didselectrowatindexpath

enter image description here https://i.stack.imgur.com/pRZu5.png 嗨,我试图在tableview中显示特定对象的名称和pointsWorth。但xcode回答missionTitleLabel无法在missionCell上使用。是否可以显示我创建的对象的信息?

感谢我能得到任何帮助!

这是我的代码: MasterViewController.swift:

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "MissionCell", for: indexPath)
    let event = self.fetchedResultsController.object(at: indexPath)
    self.configureCell(cell, withEvent: event)

    let mission = missions[indexPath.row]
    MissionCell.missionTitleLabel?.text = mission

    return cell   
}

示例数据模型:

枚举CategoryEnum {     案例a     案例b     案例c     案例d }     公共阶层使命{

var name: String
var pointsWorth: Int
var colorTheme: UIColor
var description: String
var category: CategoryEnum

init(name: String, pointsWorth: Int, colorTheme: UIColor, description: String, category: CategoryEnum) {
    self.name = name
    self.pointsWorth = pointsWorth
    self.colorTheme = colorTheme
    self.description = description
    self.category = category
}

}让mission1 = Mission(名字:" a",pointsWorth:50,colorTheme:.blue,描述:" a是字母表中的第一个字母",category:。一个)

让mission2 = Mission(名称:" b",pointsWorth:60,colorTheme:。red,description:" b是字母表中的第二个字母",类别:.b )

var mission:[Mission] = [mission1,mission2]

MissionCell.swift:

import UIKit

类MissionCell:UITableViewCell {

@IBOutlet weak var missionTitleLabel: UILabel!
@IBOutlet weak var missionPointLabel: UILabel!

override func awakeFromNib() {
    super.awakeFromNib()
    // Initialization code
}

override func setSelected(_ selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)

}

}

2 个答案:

答案 0 :(得分:0)

您应该像这样分配值:

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "MissionCell", for: indexPath) as! MissionCell
    let event = self.fetchedResultsController.object(at: indexPath)
    self.configureCell(cell, withEvent: event)

    let mission = missions[indexPath.row]
    cell.missionTitleLabel?.text = mission.name


    return cell   
}

请记住,只有在您确定存在一种细胞类型时才使用施放到MissionCell的力量,否则您将崩溃。 考虑一下:

if let cell = cell as? MissionCell {
  cell.missionTitleLabel?.text = mission.name

}

答案 1 :(得分:0)

在这里,您应该将cell变量用作MissionCell

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
   let cell = tableView.dequeueReusableCell(withIdentifier: "MissionCell", for: indexPath) as! MissionCell
   let event = self.fetchedResultsController.object(at: indexPath)
   self.configureCell(cell, withEvent: event)

   let mission = missions[indexPath.row]
   cell.missionTitleLabel?.text = mission.name

   return cell   
}

希望有所帮助。