当我从 tableView 中选择一个单元格时，如何使用 navigationController 显示 WebView? [英] How to use navigationController to show up a WebView when I choose one cell from the tableView?

问题描述

当我们从tableView中选择一个cell时，我们使用didSelectRowAtIndexPath方法来实现具体的操作.

When we choose one cell from the tableView, we use the didSelectRowAtIndexPath method to implement the specific operation.

那么如何通过navigationController跳转到webView这样的另一个视图?

Then how to jump to another view like webView via the navigationController?

我想使用 prepareForSegue 来处理这个问题，如下所示，我只知道如何将数据从一个 viewController 传递到另一个 viewController>.

I want to use the prepareForSegue to handle this issue like below, and I just know how to pass data from one viewController to another viewController.

override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!){
    var channelC:ChannelController=segue.destinationViewController as ChannelController

    channelC.delegate = self
    //将channelData传递给ChannelController中去。
    channelC.channelData=self.channelData
}

当我想显示另一个像 WebView 这样的视图时，我不知道如何在 didSelectRowAtIndexPath 方法中编码?

I don't know how to code in the didSelectRowAtIndexPath method when I want to show up another view like WebView?

我只是使用故事板来处理 viewController 开关的事情.谢谢

I just use the storyboard to handle viewController switch thing. Thanks

推荐答案

这里我为你创建一个简单的例子:

Here I create a simple example for you :

import UIKit

class ViewController: UIViewController,UITableViewDataSource, UITableViewDelegate {

var arr: [String] = ["google", "yahoo", "Swift"]
var index : Int = Int()
override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{

    return arr.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{

    var identifier : NSString = "Cell"

    var cell = tableView.dequeueReusableCellWithIdentifier(identifier) as? UITableViewCell

    if !(cell != nil) {
        cell = UITableViewCell(style: UITableViewCellStyle.Value1, reuseIdentifier: identifier)
    }
    cell?.textLabel.text = self.arr[indexPath.row]

    return cell!
}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
    tableView.deselectRowAtIndexPath(indexPath, animated: true)

    //store your clicked row into index
    index = indexPath.row

    // get to the next screen
    self.performSegueWithIdentifier("goNext", sender: self)
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {

    if (segue.identifier == "goNext") {

        var webViewController = segue.destinationViewController as googleViewController

        //switch case for row which you have clicked
        switch index{

        case 0:

            webViewController.url = "https://www.google.co.in/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8"
        case 1:

            webViewController.url = "https://in.yahoo.com/"
        case 2:

            webViewController.url = "https://developer.apple.com/library/prerelease/mac/documentation/Swift/Conceptual/Swift_Programming_Language/TheBasics.html#//apple_ref/doc/uid/TP40014097-CH5-XID_456"
        default:
            println("nothing")
            }
        }

    }
}

这是您的 googleViewController.swift

    @IBOutlet weak var webView: UIWebView!

var url : String = String()

override func viewDidLoad() {
    super.viewDidLoad()

    let requestURL = NSURL(string:url)
    let request = NSURLRequest(URL: requestURL!)
    webView.loadRequest(request)

}

也许这会对你有所帮助.

May be this will help you.

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