Swift:将 UITableViewCell 标签传递给新的 ViewController [英] Swift: Pass UITableViewCell label to new ViewController

问题描述

我有一个 UITableView，它根据 JSON 调用用数据填充单元格.像这样:

I have a UITableView that populates Cells with data based on a JSON call. like so:

var items = ["Loading..."]
var indexValue = 0

// Here is SwiftyJSON code //

for (index, item) in enumerate(json) {
    var indvItem = json[index]["Brand"]["Name"].stringValue
    self.items.insert(indvItem, atIndex: indexValue)
    indexValue++
}
self.tableView.reloadData()

如何在单元格被选中时获取它的标签，然后将其传递给另一个 ViewController?

我设法得到:

func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
    println("You selected cell #\(indexPath.row)!")

    // Get Cell Label
    let indexPath = tableView.indexPathForSelectedRow();
    let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as UITableViewCell!;

    println(currentCell.textLabel.text)
}

我只是不知道如何将它作为变量传递给下一个 UIViewController.

I just cant figure out how to pass that as a variable to the next UIViewController.

谢谢

推荐答案

在两个视图控制器之间传递数据取决于视图控制器如何相互链接.如果它们与 segue 链接，您将需要使用 performSegueWithIdentifier 方法并覆盖 prepareForSegue 方法

Passing data between two view controllers depends on how view controllers are linked to each other. If they are linked with segue you will need to use performSegueWithIdentifier method and override prepareForSegue method

var valueToPass:String!

func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
    println("You selected cell #\(indexPath.row)!")

    // Get Cell Label
    let indexPath = tableView.indexPathForSelectedRow();
    let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as UITableViewCell!;

    valueToPass = currentCell.textLabel.text
    performSegueWithIdentifier("yourSegueIdentifer", sender: self)

}

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

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

        // initialize new view controller and cast it as your view controller
        var viewController = segue.destinationViewController as AnotherViewController
        // your new view controller should have property that will store passed value
        viewController.passedValue = valueToPass
    }

}

如果您的视图控制器未与 segue 链接，那么您可以直接从 tableView 函数传递值

If your view controller are not linked with segue then you can pass values directly from your tableView function

func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
    println("You selected cell #\(indexPath.row)!")

    // Get Cell Label
    let indexPath = tableView.indexPathForSelectedRow();
    let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as UITableViewCell!;
    let storyboard = UIStoryboard(name: "YourStoryBoardFileName", bundle: nil)
    var viewController = storyboard.instantiateViewControllerWithIdentifier("viewControllerIdentifer") as AnotherViewController
    viewController.passedValue = currentCell.textLabel.text
    self.presentViewController(viewContoller, animated: true , completion: nil) 
}

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