概述:我怎样才能使带有 segue 的单元格 identifier 为 0 将加载 ID 为 0 的行中的数据，segue identifier 为 1 的单元格将加载 ID 为 1 的行中的数据，依此类推。数据包括 ID(响应单元格标识符)、navTitle(导航栏的标题)、written(文章作者)、date(文章日期)和 article(文章本身)。

我试图做到这一点，一旦在我的表格 View 中点击一个单元格，它就会打开该单元格独有的数据。最好的方法是什么？我在想也许我应该让它检查我在 Parse 上的 ID 列并加载该行中的数据，但我不确定该怎么做。有一个更好的方法吗？任何帮助表示赞赏!随时向我询问任何其他信息。

^ 所以这里我有一个 TableView ，其中的数据是从 Parse 中获取的，并用于两个标签。

^ 此 View Controller 与上面的单元格相连:

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

    if indexPath.row == 0 {
        self.performSegueWithIdentifier("0a", sender: nil)
        self.tableview.deselectRowAtIndexPath(indexPath, animated: true)

    }
}

这是我的 EventsDetailViewController，它在点击单元格时调用:

import UIKit
import Parse
import ParseUI
import Bolts

class EventDetailViewController: UIViewController {

@IBAction func eventDetail(sender: AnyObject) {
    dismissViewControllerAnimated(true, completion: nil)

}

@IBOutlet weak var articleTitle: UILabel!
@IBOutlet weak var writtenBy: UILabel!
@IBOutlet weak var date: UILabel!
@IBOutlet weak var article: UITextView!
@IBOutlet weak var navBar: UINavigationBar!

var dateDetail = [String]()
var articleDetail = [String]()

override func viewDidLoad() {
    super.viewDidLoad()

    loadEvents()

    // Do any additional setup after loading the view.
}

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

func loadEvents () -> Void {

    var query = PFQuery(className: "eventsdetail")
    query.findObjectsInBackgroundWithBlock {
        (objects: [PFObject]?, error : NSError?) -> Void in

        if error == nil {

            if let objects = objects as [PFObject]! {
                for object in objects {

                    var output1 = object.objectForKey("navTitle") as! String
                    self.navBar.topItem?.title = output1

                    var output2 = object.objectForKey("articleTitle") as! String
                    self.articleTitle.text = output2

                    var output3 = object.objectForKey("written") as! String
                    self.writtenBy.text = output3

                    var output4 = object.objectForKey("date") as! String
                    self.date.text = output4

                    var output5 = object.objectForKey("article") as! String
                    self.article.text = output5

                }
            }

        }

    }
}

}

这是我的EventsViewController:

import UIKit
import Parse
import Bolts
import ParseUI

class EventsViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {

var timer: NSTimer!
var isAnimating = false
var currentColorIndex = 0
var currentLabelIndex = 0
var customView: UIView!
var labelsArray: Array<UILabel> = []
var refreshControl: UIRefreshControl!
var testArray = [String]()
var subArray = [String]()

@IBOutlet weak var tableview: UITableView!


@IBOutlet weak var webView: UIWebView!

override func viewDidLoad() {
    super.viewDidLoad()

    refreshControl = UIRefreshControl()

    tableview.delegate = self
    tableview.dataSource = self

    refreshControl.addTarget(self, action: Selector("loadEvents"), forControlEvents: UIControlEvents.ValueChanged)
    self.tableview.addSubview(refreshControl)
    loadEvents()

    loadCustomRefreshContents()

    //refreshControl colors
    refreshControl.backgroundColor = UIColor.clearColor() //color of background
    refreshControl.tintColor = UIColor.clearColor() //color of indicator
}

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

func loadEvents () -> Void {

    testArray = [String]()
    subArray = [String]()

    let query = PFQuery(className: "events")
    let runkey = query.orderByDescending("eventTitle")
    runkey.findObjectsInBackgroundWithBlock {
        (objects: [PFObject]?, error:NSError?) -> Void in

        if error == nil {


            if let objects = objects as [PFObject]! {
                for object in objects {

                    let load = object.objectForKey("eventTitle") as! String
                    self.testArray.append(load)

                    let subload = object.objectForKey("date") as! String
                    self.subArray.append(subload)

                    //reload TableView
                    self.tableview.reloadData()
                    print(self.testArray)
                }

            }
        } else {

            print("error:\(error!) \(error!.userInfo)")
        }

    }

    refreshControl.endRefreshing()
}

func do_table_refresh() {

    dispatch_async(dispatch_get_main_queue()) {

        self.tableview.reloadData()
        return

    }

}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

    if indexPath.row == 0 {
        self.performSegueWithIdentifier("0a", sender: nil)
        self.tableview.deselectRowAtIndexPath(indexPath, animated: true)

    }
}

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

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


func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("eventcell", forIndexPath: indexPath) as! EventTableViewCell
    cell.title.text = self.testArray[indexPath.row]
    cell.subTitle.text = self.subArray[indexPath.row]
    return cell
}

//refreshes tableview; starts refresh
func loadCustomRefreshContents() {
    let refreshContents = NSBundle.mainBundle().loadNibNamed("RefreshControl", owner: self, options: nil)

    customView = refreshContents[0] as! UIView
    customView.frame = refreshControl.bounds

    for var i=0; i<customView.subviews.count; ++i {
        labelsArray.append(customView.viewWithTag(i + 1) as! UILabel)
    }

    refreshControl.addSubview(customView)


}

//stops refresh
func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
    do_table_refresh()

    if refreshControl.refreshing {
        if !isAnimating {
            animateRefreshStep1()

        }
    }
}

//cycles through colors
func getNextColor() -> UIColor {
    var colorsArray: Array<UIColor> = [UIColor.magentaColor(), UIColor.brownColor(), UIColor.yellowColor(), UIColor.redColor(), UIColor.greenColor(), UIColor.blueColor(), UIColor.orangeColor()]

    if currentColorIndex == colorsArray.count {
        currentColorIndex = 0
    }

    let returnColor = colorsArray[currentColorIndex]
    ++currentColorIndex

    return returnColor
}

func doSomething() {
    timer = NSTimer.scheduledTimerWithTimeInterval(4.0, target: self, selector: "endOfWork", userInfo: nil, repeats: true)
    self.do_table_refresh()

}

func endOfWork() {
    refreshControl.endRefreshing()

    timer.invalidate()
    timer = nil
}

//first part of animation
func animateRefreshStep1() {
    isAnimating = true

    UIView.animateWithDuration(0.1, delay: 0.0, options: UIViewAnimationOptions.CurveLinear, animations: { () -> Void in
        self.labelsArray[self.currentLabelIndex].transform = CGAffineTransformMakeRotation(CGFloat(M_PI_4))
        self.labelsArray[self.currentLabelIndex].textColor = self.getNextColor()

        }, completion: { (finished) -> Void in

            UIView.animateWithDuration(0.05, delay: 0.0, options: UIViewAnimationOptions.CurveLinear, animations: { () -> Void in
                self.labelsArray[self.currentLabelIndex].transform = CGAffineTransformIdentity
                self.labelsArray[self.currentLabelIndex].textColor = UIColor.blackColor()

                }, completion: { (finished) -> Void in
                    ++self.currentLabelIndex

                    if self.currentLabelIndex < self.labelsArray.count {
                        self.animateRefreshStep1()
                    }
                    else {
                        self.animateRefreshStep2()
                    }
            })
    })
}

//second part of animation
func animateRefreshStep2() {
    UIView.animateWithDuration(0.35, delay: 0.0, options: UIViewAnimationOptions.CurveLinear, animations: { () -> Void in
        self.labelsArray[0].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[1].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[2].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[3].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[4].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[5].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[6].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[7].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[8].transform = CGAffineTransformMakeScale(1.5, 1.5)
        self.labelsArray[9].transform = CGAffineTransformMakeScale(1.5, 1.5)

        }, completion: { (finished) -> Void in
            UIView.animateWithDuration(0.25, delay: 0.0, options: UIViewAnimationOptions.CurveLinear, animations: { () -> Void in
                self.labelsArray[0].transform = CGAffineTransformIdentity
                self.labelsArray[1].transform = CGAffineTransformIdentity
                self.labelsArray[2].transform = CGAffineTransformIdentity
                self.labelsArray[3].transform = CGAffineTransformIdentity
                self.labelsArray[4].transform = CGAffineTransformIdentity
                self.labelsArray[5].transform = CGAffineTransformIdentity
                self.labelsArray[6].transform = CGAffineTransformIdentity
                self.labelsArray[7].transform = CGAffineTransformIdentity
                self.labelsArray[8].transform = CGAffineTransformIdentity
                self.labelsArray[9].transform = CGAffineTransformIdentity

                }, completion: { (finished) -> Void in
                    if self.refreshControl.refreshing {
                        self.currentLabelIndex = 0
                        self.animateRefreshStep1()
                    }
                    else {
                        self.isAnimating = false
                        self.currentLabelIndex = 0
                        for var i=0; i<self.labelsArray.count; ++i {
                            self.labelsArray[i].textColor = UIColor.blackColor()
                            self.labelsArray[i].transform = CGAffineTransformIdentity
                        }
                    }
            })
    })
}

}

最佳答案

因为您在 tableView 上有数据，只需确保在 Storyboard中创建连接原型(prototype)单元格和目标 View Controller 的转场，并向转场添加标识符。

接下来，在带有 tableView 的 Controller 上确保调用:

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

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

        let detailScene = segue.destinationViewController as! EventDetailViewController

        if let indexPath = self.tableView.indexPathForSelectedRow {
            let row = Int(indexPath.row)

            //here you can pass all the data to the destination viewController. But you CANT POPULATE YOUR LABELS. make sure you pass the data to some auxiliar variable(s). Next line is an example
            detailScene.selectedData = (self.myData[row] as! PFObject)
        }
    }
}

更新:

detailScene.selectedData = (self.myData[row] as! PFObject)

detailScene 是目标 viewController 的实例。 selectedData 在本例中是 PFObject 的一个实例，它将用于填充我的目标 viewController 中的标签。 self.myData 是我的源 View Controller 中的一个数组，其中包含显示在我的 tableView 中的数据。

因此，如果您想发送您在单元格中显示的数据。 (

self.testArray[indexPath.row]
self.subArray[indexPath.row]

) 确保在 EventsDetailViewController 上声明将接收此数据的变量，如下所示:

var testString:String!
var subString:String!

然后在您的 prepareForSegue (EventsViewController) 中确保使用正确的数据实例化此变量:

detailScene.test = self.testArray[row]
detailScene.sub = self.subArray[row]

最后，在 EventsDetailViewController 上，您可以将数据传递给 viewDidLoad() 上您想要的标签:

self.articleTitle.text = testString

如有任何疑虑，请告诉我。

关于swift - 解析 : Retrieving Data by Row，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34476435/