How to use navigationController to show up a WebView when I choose one cell from the tableView?

问题

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

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

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
}

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

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

回答1:

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")
            }
        }

    }
}

here is code for your 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)

}

May be this will help you.

来源：https://stackoverflow.com/questions/27539712/how-to-use-navigationcontroller-to-show-up-a-webview-when-i-choose-one-cell-from

标签

swift

tableview

segue