如何根据点击的 UITableCell 更改目标视图控制器的内容? [英] How to change content of the destination view controller according to tapped UITableCell?

问题描述

我有两个视图控制器，分别是 UITableViewController 和 DestinationViewController.DestinationViewController 的内容应该根据点击的 UITableViewCell 改变.我尝试了 this 教程，但这个教程没有意义.如何确定点击了哪个单元格以及如何在点击单元格时执行 segue?

I have two view controllers as UITableViewController and DestinationViewController. The content of DestinationViewController should change according to tapped UITableViewCell. I tried this tutorial but this one didn't make sense. How can I determine which cell is tapped and how can I perform segue when the cell tapped?

UITableViewController:

UITableViewController:

let days = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]

var myIndex: Int?
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    table1View.deselectRowAtIndexPath(indexPath, animated: true)
    myIndex = indexPath.row
    self.performSegueWithIdentifier("showClassesForSchedule", sender: nil)
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if let identifier = segue.identifier {
        switch identifier {
        case "showClassesForSchedule":
            let destinationViewController = segue.destinationViewController as? ScheduleAsClassTableViewController// set here нour destionation VC
            if destinationViewController != nil {
                destinationViewController?.tableArray.append(days[myIndex!])
                destinationViewController?.tableArray = days
                print(days[myIndex!])
            }
        default: break
        }
    }
}


func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return 1
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return days.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("scheduleDaysTextCellIdentifier", forIndexPath: indexPath) as UITableViewCell

    let row = indexPath.row
    cell.textLabel?.text = days[row]

    return cell
}

目标视图控制器:

    var tableArray = [String]()
    @IBOutlet var table1View: UITableView!
    override func viewDidLoad() {
        super.viewDidLoad()
        print(tableArray)
    }
    @IBOutlet weak var comingLabelAsNormalView: UILabel!

    @IBOutlet weak var comingName: UILabel!

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

    // MARK: - Table view data source

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        // #warning Incomplete implementation, return the number of sections
        return 1
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete implementation, return the number of rows
        return tableArray.count
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = table1View.dequeueReusableCellWithIdentifier("scheduleDayClassIdentifier", forIndexPath: indexPath) as UITableViewCell

        let row = indexPath.row
        cell.textLabel?.text = tableArray[row]

        return cell
    }

推荐答案

您可以在 tableView didSelectRowAtIndexPath 中执行 segue.然后在 prepareForSegue 方法中设置你的目标VC并传递所需的数据.

You can perform a segue in tableView didSelectRowAtIndexPath. Then in prepareForSegue method set your destinationVC and pass needed data.

代码:

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if let identifier = segue.identifier {
        switch identifier {
        case "yourSegueIdentifier":
            let destinationViewController = segue.destinationViewController as? UIViewController // set here нour destionation VC
            if destinationViewController != nil {
                destinationViewController?.passedData = yourData
            }
        default: break
        }
    }
}

不要忘记创建一个 segue 并设置标识符.如果您有任何问题，请在评论中提出.

Don't forget to create a segue and set the identifier. If you have questions ask in comments.

这是您的 tableView didSelectRowAtIndexPath:

Here is your tableView didSelectRowAtIndexPath:

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    tableView.deselectRowAtIndexPath(indexPath, animated: true)
    // save indexPath to any Int variable
    myIndex = indexPath.row
    self.performSegueWithIdentifier("yourSegueIndentifier", sender: nil)
}

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