swift - 如何在tableview swift中设置两个部分的数据

Question

我想为马自达版本 2 添加 id: 1,2,3 部分，为马自达版本 1.5 添加 4,5,6，但我在这里遇到错误:

cell.textLabel?.text = headline.title 
cell.detailTextLabel?.text = headline.text 

error: Value of type '[(id: Int, title: String, text: String, image: String, color: UIColor)]' has no member 'title'

下面是我的代码

import UIKit

struct Headline {

    var id : Int
    var title : String
    var text : String
    var image : String
    var color: UIColor!


}

var headlines = [
    [(id: 1, title: "Mazda 3", text: "Price: 8500000000", image: "mazdared", color: UIColor.red),
     (id: 2, title:  "Mazda 3", text: "Price: 8000000000", image: "mazdablue", color: UIColor.blue),
     (id: 3, title:  "Mazda 3", text: "Price: 9000000000", image: "mazdablack", color: UIColor.black)] ,

    [(id: 4, title: "Mazda 3", text: "Price: 10000000000", image: "mazdared", color: UIColor.red),
     (id: 5, title: "Mazda 3", text: "Price: 9500000000", image: "mazdablue", color: UIColor.blue),
     (id: 6, title: "Mazda 3", text: "Price: 9000000000", image: "mazdablack", color: UIColor.black)]
]

class CarTableViewController: UITableViewController {

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

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return headlines[section].count
    }

    let headerTitles = ["Mazda Version 2", "Mazda Version 1.5"]
    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        if section < headerTitles.count {
            return headerTitles[section]
        }

        return nil
    }

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

        let headline = headlines[indexPath.row]
        cell.textLabel?.text = headline.title
        cell.textLabel?.textColor = UIColor.white
        cell.detailTextLabel?.text = headline.text
        cell.detailTextLabel?.textColor = UIColor.white
        cell.backgroundColor = headline.color
        cell.imageView?.image = UIImage(named: headline.image)


        return cell
    }

}

Answer 1

在这里，我对您的代码进行了一些修改以使其正常工作。

第 1 步:

替换

var headlines = [
    [(id: 1, title: "Mazda 3", text: "Price: 8500000000", image: "mazdared", color: UIColor.red),
     (id: 2, title:  "Mazda 3", text: "Price: 8000000000", image: "mazdablue", color: UIColor.blue),
     (id: 3, title:  "Mazda 3", text: "Price: 9000000000", image: "mazdablack", color: UIColor.black)] ,

    [(id: 4, title: "Mazda 3", text: "Price: 10000000000", image: "mazdared", color: UIColor.red),
     (id: 5, title: "Mazda 3", text: "Price: 9500000000", image: "mazdablue", color: UIColor.blue),
     (id: 6, title: "Mazda 3", text: "Price: 9000000000", image: "mazdablack", color: UIColor.black)]
]

与

var headlines = [

    [
        Headline(id: 1, title: "Mazda 3", text: "Price: 8500000000", image: "mazdared", color: UIColor.red),
        Headline(id: 2, title: "Mazda 3", text: "Price: 8000000000", image: "mazdablue", color: UIColor.blue),
        Headline(id: 3, title: "Mazda 3", text: "Price: 9000000000", image: "mazdablack", color: UIColor.black)
    ],
    [
        Headline(id: 4, title: "Mazda 3", text: "Price: 10000000000", image: "mazdared", color: UIColor.red),
        Headline(id: 5, title: "Mazda 3", text: "Price: 9500000000", image: "mazdablue", color: UIColor.blue),
        Headline(id: 6, title: "Mazda 3", text: "Price: 9000000000", image: "mazdablack", color: UIColor.black)
    ]
]

这里我已经正确初始化了结构。

第 2 步:

在您的cellForRowAt方法中替换

let headline = headlines[indexPath.row]

与

let headline = headlines[indexPath.section][indexPath.row]

因为在您的代码中，当您将 headlines[indexPath.row] 存储在 headline 对象中时，它将成为一个多维数组，在这里不起作用。所以我纠正了这一点。