Question

我想在一个let中保存两个文本域文本。我需要这个，所以我可以同时上传数据，否则它将产生2个单独的数据。 newStoryYoutube和newStorynaam需要一个let。这是我的代码：

 @IBAction func postDidTouch(_ sender: UIBarButtonItem)
    {
        if Youtubelink.text != "" {
            // Create and save a new story
            let newStoryYoutube = Story(text: Youtubelink.text!)
            newStoryYoutube.save()


        }


        if Naamgeluidje.text != "" {

            // Create and save a new story
            let newStorynaam = Story(textnaam: Naamgeluidje.text!)
            newStorynaam.save()


            self.navigationController!.popViewController(animated: true)
        }

    }

另一个viewcontroller中的Story类：

class Story
{
    var text: String = ""
    var textnaam: String = ""
    var numberOfLikes = 0
    var numberOfAngry = 0
    let ref: DatabaseReference!

    init(text: String) {
        self.text = text
        ref = Database.database().reference().child("stories").childByAutoId()
    }
    init(textnaam: String) {
        self.textnaam = textnaam
        ref = Database.database().reference().child("stories").childByAutoId()
    }

    init(snapshot: DataSnapshot)
    {
        ref = snapshot.ref
        if let value = snapshot.value as? [String : Any] {
            text = value["text"] as! String
            textnaam = value["textnaam"] as! String
            numberOfLikes = value["numberOfLikes"] as! Int
            numberOfAngry = value["numberOfAngry"] as! Int
        }
    }

    func save() {
        ref.setValue(toDictionary())
    }

    func toDictionary() -> [String : Any]
    {
        return [
            "text" : text,
            "textnaam" : textnaam,
            "numberOfLikes" : numberOfLikes,
            "numberOfAngry" : numberOfAngry
        ]
    }
}

Answer 1

您正在此处创建Story类的两个实例。你应该做的是创建一个没有任何参数的构造函数，然后初始化你的类一次，然后设置如下的属性。

let newStory = Story()

 @IBAction func postDidTouch(_ sender: UIBarButtonItem)
    {
        if Youtubelink.text != "" {
            // Create and save a new story
            newStory.text = Youtubelink.text!
            newStory.save()


        }


        if Naamgeluidje.text != "" {

            // Create and save a new story

            newStory.textnaam = Naamgeluidje.text!
            newStory.save()

            self.navigationController!.popViewController(animated: true)
        }

    }

将您的Story类更改为此类，以便您可以初始化它而不传递任何参数

class Story
{
    var text: String = ""
    var textnaam: String = ""
    var numberOfLikes = 0
    var numberOfAngry = 0
    let ref: DatabaseReference!

    init(text: String) {
        self.text = text
        ref = Database.database().reference().child("stories").childByAutoId()
    }
    init(textnaam: String) {
        self.textnaam = textnaam
        ref = Database.database().reference().child("stories").childByAutoId()
    }
    init() {
        ref = Database.database().reference().child("stories").childByAutoId()
    }

    init(snapshot: DataSnapshot)
    {
        ref = snapshot.ref
        if let value = snapshot.value as? [String : Any] {
            text = value["text"] as! String
            textnaam = value["textnaam"] as! String
            numberOfLikes = value["numberOfLikes"] as! Int
            numberOfAngry = value["numberOfAngry"] as! Int
        }
    }

    func save() {
        ref.setValue(toDictionary())
    }

    func toDictionary() -> [String : Any]
    {
        return [
            "text" : text,
            "textnaam" : textnaam,
            "numberOfLikes" : numberOfLikes,
            "numberOfAngry" : numberOfAngry
        ]
    }
}

在一个let中保存两个文本域文本

1 个答案: