Question

我为我的Swift应用程序添加了另一个ViewController到我的Storyboard，并将第一个ViewController屏幕中的一个按钮链接到新屏幕。我想将代码添加到新的View Controller中，并为它创建一个新类，但是现在当我构建应用程序并单击按钮转到新屏幕时，我收到一条错误，上面写着＆＃34; Unknown class MyOwnViewController在Interface Builder文件中。＆＃34; MyOwnViewController是该屏幕的Class名称。我哪里出错了？以下是我如何列出这两个课程的内容：

import UIKit

class ViewController: UIViewController {

@IBOutlet var showOption1: UILabel!

@IBOutlet var showOption2: UILabel!

@IBOutlet weak var button1: UIButton!

@IBOutlet weak var button2: UIButton!

lazy var buttons: [UIButton] = [self.button1, self.button2]

var voteCount: PFObject?

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

            var voteCount1 = PFObject(className: "VoteCount")
            voteCount1["choices"] = 2
            voteCount1["votes"] = Int()
            voteCount1["votes2"] = Int()
            voteCount1["optionName"] = String()
            voteCount1["optionName2"] = String()
            voteCount1["objectId"] = String()
            voteCount1["pollNumber"] = Int()

            var voteCount2 = PFObject(className: "VoteCount2")
            voteCount2["choices"] = 3
            voteCount2["votes"] = Int()
            voteCount2["votes2"] = Int()
            voteCount2["votes3"] = Int()
            voteCount2["optionName"] = String()
            voteCount2["optionName2"] = String()
            voteCount2["optionName3"] = String()

            var voteCount3 = PFObject(className: "VoteCount3")
            voteCount3["choices"] = 4
            voteCount3["votes"] = Int()
            voteCount3["votes2"] = Int()
            voteCount3["votes3"] = Int()
            voteCount3["votes4"] = Int()
            voteCount3["optionName"] = String()
            voteCount3["optionName2"] = String()
            voteCount3["optionName3"] = String()
            voteCount3["optionName4"] = String()

            var query = PFQuery(className: "VoteCount")
            query.countObjectsInBackgroundWithBlock {
                (count: Int32, error: NSError!) -> Void in
                if error == nil {
                    let randNumber = Int(arc4random_uniform(UInt32(count)))
                    query.whereKey("pollNumber", equalTo: randNumber)
                    query.getFirstObjectInBackgroundWithBlock {
                        (voteCount1: PFObject!, error: NSError!) -> Void in
                        if error != nil {
                            NSLog("%@", error)
                        } else {
                            self.voteCount = voteCount1
                            let votes = voteCount1["votes"] as Int
                            let votes2 = voteCount1["votes2"] as Int
                            let option1 = voteCount1["optionName"] as String
                            let option2 = voteCount1["optionName2"] as String
                            self.showOption1.text = "\(option1)"
                            self.showOption2.text = "\(option2)"
                        }
                    }
                } else {
                    println("error \(error)")
                }
            }

}

@IBOutlet weak var pollResults: UILabel!

@IBAction func addVote1(sender: AnyObject) {
    for button in self.buttons {
        button.enabled = false
    }
    var query = PFQuery(className: "VoteCount")
    query.getFirstObjectInBackgroundWithBlock {
        (voteCount1: PFObject!, error: NSError!) -> Void in
        if error != nil {
            NSLog("%@", error)
        } else {
            self.voteCount = voteCount1
            voteCount1.incrementKey("votes")
            voteCount1.saveInBackgroundWithTarget(nil, selector: nil)
            let votes = voteCount1["votes"] as Int
            let votes2 = voteCount1["votes2"] as Int
            self.pollResults.text = "\(votes)                                                       \(votes2)"
        }
        }
    }

@IBOutlet weak var pollResults2: UILabel!

@IBAction func addVote2(sender: AnyObject) {
    for button in self.buttons {
        button.enabled = false
    }
    var query = PFQuery(className: "VoteCount")
    query.getFirstObjectInBackgroundWithBlock {
        (voteCount1: PFObject!, error: NSError!) -> Void in
        if error != nil {
            NSLog("%@", error)
        } else {
            self.voteCount = voteCount1
            voteCount1.incrementKey("votes2")
            voteCount1.saveInBackgroundWithTarget(nil, selector: nil)
            let votes = voteCount1["votes"] as Int
            let votes2 = voteCount1["votes2"] as Int
            self.pollResults2.text = "\(votes)                                                       \(votes2)"
        }
        }

}


@IBAction func goPressed(sender: UIButton) {
    let segues = ["pushTwo1"]
    let index = Int(arc4random_uniform(UInt32(segues.count)))
    let segueName = segues[index]
    self.performSegueWithIdentifier(segueName, sender: self)
}


class MyOwnViewController: UIViewController {

    @IBOutlet var showOption3: UILabel!

    @IBOutlet var showOption4: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()

        var voteCount1 = PFObject(className: "VoteCount")
        voteCount1["choices"] = 2
        voteCount1["votes"] = Int()
        voteCount1["votes2"] = Int()
        voteCount1["optionName"] = String()
        voteCount1["optionName2"] = String()
        voteCount1["objectId"] = String()
        voteCount1["pollNumber"] = Int()

        var query = PFQuery(className: "VoteCount")
        query.countObjectsInBackgroundWithBlock {
            (count: Int32, error: NSError!) -> Void in
            if error == nil {
                let randNumber = Int(arc4random_uniform(UInt32(count)))
                query.whereKey("pollNumber", equalTo: randNumber)
                query.getFirstObjectInBackgroundWithBlock {
                    (voteCount1: PFObject!, error: NSError!) -> Void in
                    if error != nil {
                        NSLog("%@", error)
                    } else {
                        let votes = voteCount1["votes"] as Int
                        let votes2 = voteCount1["votes2"] as Int
                        let option1 = voteCount1["optionName"] as String
                        let option2 = voteCount1["optionName2"] as String
                        self.showOption3.text = "\(option1)"
                        self.showOption4.text = "\(option2)"
                    }
                }
            } else {
                println("error \(error)")
            }
        }


    }

}

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

}

Answer 1

你的MyOwnViewController＆＃39; class嵌套在＆＃39; ViewController＆＃39;类。您应该选择＆＃39; MyOwnViewController＆＃39;的所有代码，将其剪切，然后将其粘贴到自己的文件中。

将ViewController添加到Storyboard时出错

1 个答案: