Swift-URL数组不起作用 [英] Swift - Array of URLs not working

问题描述

我有三个保存信息的数组。一个显示节标题，一个显示每个单元格的标题，一个提供到另一个viewController的链接。我正在使用Swift btw。

I have three different arrays that hold information. One displays the section title, one displays the title of each cell, and one provides a link to the other viewController. I am using Swift btw.

但是当我运行它时，所有单元格都使用数组中的第一个url，而不使用其余的url。

But when I run it, all the cells use the first url in the array and not the rest of the url's.

这是我的代码：

import UIKit

class FirstViewController: UIViewController, UITableViewDataSource, 
UITableViewDelegate {
    var headers = ["Bein Sports", "Sky Sports", "Alkass"]
    var channels = [["Bein Sports 1","Bein Sports 2","Bein Sports 3","Bein Sports 4","Bein Sports 5","Bein Sports 6","Bein Sports 7","Bein Sports 8","Bein Sports 9","Bein Sports 10","Bein Sports News"],
                    ["Sky Sports 1","Sky Sports 2","Sky Sports 3","Sky Sports 4","Sky Sports 5"], ["Alkass One", "Alkass Two", "Alkass Three", "Alkass Four", "Alkass Five"]]
    var links = ["https://google.ca","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com","https://facebook.com"]
    var myIndex: IndexPath?


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

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

    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        return headers[section]
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        cell.textLabel?.text = channels[indexPath.section][indexPath.row]
        return cell
    }

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        myIndex = indexPath
        performSegue(withIdentifier: "segue", sender: self)
    }
}

推荐答案

似乎您没有在代码中的任何地方使用链接数组。我没有检查此代码，希望它可以工作

Seems you didn't used links array anywhere in your code.I didn't check this code hope it will work

let url:URL = URL(string: "http://google.ca")!

因此，在单击您在单元格中提供的所有链接时，上述网址会静态加载。

So the above url loaded statically while clicking all links which you provide in cell.

首先添加变量以在ChannelController中获取选定的单元格链接网址。

First add a variable to get selected cell link url in ChannelController.

let selcetedLink:String = ""

在didSelectRowAt方法中执行segue时，会从链接传递相应的url。为此，您需要覆盖prepareForSegue在FirstViewController中添加以下代码

While performing segue in didSelectRowAt method pass corresponding url from link.To do that you need to override prepareForSegue add below code in your FirstViewController

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
   if segue.identifier == "segue" { // check your segue identifier
      let theDestination = (segue.destinationViewController as ChannelController)
      theDestination.selcetedLink = self.links[myIndex.row]
    }
} 

最后使用selectedLink值加载URL请求

Finally use the selectedLink value to load URL request

let url:URL = URL(string: selectedLink )!

这篇关于Swift-URL数组不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！