我创建了这个包含 3 个部分和 7 行的表格。代码如下所示

import UIKit

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

@IBOutlet var subjectTabelView: UITableView!

var slSubject = ["English Lang&Lit", "Chinese Lang&Lit", "Economics"]
var hlSubject = ["Mathematics", "Chemistry", "Biology"]
var tokSubject = ["Theory of Knowledge"]

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    subjectTabelView.dataSource = self
    subjectTabelView.delegate = self
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return 3
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if section == 0{
        return hlSubject.count
    }else if section == 1{
        return slSubject.count
    }else {
        return tokSubject.count
    }

}

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

    let subjectCell = tableView.dequeueReusableCellWithIdentifier("idSubjectCell", forIndexPath: indexPath) as! UITableViewCell

    if indexPath.section == 0 {
        subjectCell.textLabel?.text = hlSubject[indexPath.row]
    } else if indexPath.section == 1{
        subjectCell.textLabel?.text = slSubject[indexPath.row]
    } else {
        subjectCell.textLabel?.text = tokSubject[indexPath.row]
    }

    return subjectCell
}

func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    if section == 0 {
        return "HL"
    } else if section == 1{
        return "SL"
    } else {
        return "ToK"
    }
}



}

我需要做什么才能让这个表中的每个单元格在被点击时推送一个新的 View Controller ？我的 Storyboard图片如下所示。在我的 Storyboard 中，我的 View Controller ，我已经创建了一个导航 Controller ，并将具有表的 View Controller 设为 rootViewController。现在，我的 tableView 只有一个原型(prototype)单元格和一个单元格标识符。

谢谢!

最佳答案

假设您的“locationVC”是:

class LocationVC: UIViewController {

    @IBOutlet weak var fromWhereLabel: UILabel!
    //This can be changed when creating this UIViewController
    var textToShow : String?

    override func viewWillAppear(animated: Bool) {
        if let textToShow = textToShow {
            fromWhereLabel.text = textToShow
        }
    }
}

然后，只需在名为 UIViewController 的ViewController 代码中添加下面的函数(应该有一个更好的名称;-) ) 你可以实现你的目标。

 func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
      //if such cell exists and destination controller (the one to show) exists too..
        if let subjectCell = tableView.cellForRowAtIndexPath(indexPath), let destinationViewController = navigationController?.storyboard?.instantiateViewControllerWithIdentifier("locationVC") as? LocationVC{
            //This is a bonus, I will be showing at destionation controller the same text of the cell from where it comes...
            if let text = subjectCell.textLabel?.text {
                destinationViewController.textToShow = text
            } else {
                destinationViewController.textToShow = "Tapped Cell's textLabel is empty"
            }
          //Then just push the controller into the view hierarchy
          navigationController?.pushViewController(destinationViewController, animated: true)
        }
     }

每次点击一个单元格时，您都可以启动一个LocationVC UIViewController，并且它有一定的值(value)来证明它是正确的。 :)

希望对您有所帮助!

UPDATE: Code and Instructions below are for allowing to launch different UIViewControllers after tap on cells

1.- 让我们创建一个类，它将成为我们每个新 UIViewController 的父类(我们愿意从我们的 tableview 单元格中获取的那些):

public class CommonDataViewController: UIViewController {
//Here we are going to be putting any data we want to share with this view
  var data: AnyObject?
}

2.- 让我们创建一些导航规则，只是为了组织起来 ;-)

enum Navigation: Int {
    case vc1 = 0, vc2 = 1, vc3 = 2, vc4 = 3
    //How many rules we have (for not to exceed this number)
    static let definedNavigations = 4
    //This must return the identifier for this view on the Storyboard
    func storyboardIdentifier() -> String {
        //for this example's sake, we have a common prefix for every new view controller, if it's not the case, you can use a switch(self) here
        return "locationVC_\(self.rawValue + 1)"
    }
}

现在，让我们以之前的代码为基础:

3.- 为清楚起见，让我们稍微更改一下之前的 LocationVC(对于此示例，将有一个带有文本 "locationVC_1"的Storyboard Identifier )

class LocationVC: CommonDataViewController {

    @IBOutlet weak var fromWhereLabel: UILabel!

    //This is optional, but improves clarity..here we take our AnyObject? variable data and transforms it into the type of data this view is excepting 
    var thisVCReceivedData: String? {
        return data as? String
    }

    override func viewWillAppear(animated: Bool) {
        if let textToShow = thisVCReceivedData {
            fromWhereLabel.text = textToShow
        }
    }
}

4.- 现在，我们在 didSelectRowAtIndexPath 函数中触发所有这些。

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    //Just to avoid tapping on a cell that doesn't have an UIViewController asociated
    if Navigation.definedNavigations > indexPath.row {
        //The view's instance on our Navigation enum to which we most go after tapping this cell
        let nextView = Navigation(rawValue: indexPath.row)!
        //The identifier of the destination CommonDataViewController's son in our Storyboard
        let identifier = nextView.storyboardIdentifier()
        //If everything exists...
        if let subjectCell = tableView.cellForRowAtIndexPath(indexPath), let destinationViewController = navigationController?.storyboard?.instantiateViewControllerWithIdentifier(identifier) as? CommonDataViewController {

            //here you can use a switch around "nextView" for passing different data to every View Controller..for this example, we just pass same String to everyone
            if let text = subjectCell.textLabel?.text {
                destinationViewController.data = text
            } else {
                destinationViewController.data = "Tapped Cell's textLabel is empty"
            }
            navigationController?.pushViewController(destinationViewController, animated: true)
        }
    }
}

Notice that you can achieve same results using protocols and delegate approach, this is just simpler to explain

关于ios - 点击表格单元格时如何推送新的 View Controller ？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32014001/