將var從一個類傳遞到ViewController

-2

[！[enter]圖像描述] [1]] [1]我想將var postKey值傳遞給名爲ExtraViewController的另一個ViewController。第一個var postKey的值需要放在ExtraViewController的var postKey中。這是我迄今爲止。將var從一個類傳遞到ViewController

var postKey = Database.database().reference().childByAutoId().key 

     let ExtraViewController = storyboard?.instantiateViewControllerWithIdentifier("ExtraViewController") as! ExtraViewController 

     ExtraViewController.postKey = postKey

Error: Use of unresolved identifier 'storyboard' Error: Expected declaration

來源

2017-09-16 Dani Kemper

-1

使用此代碼 -

func moveToOtherView() 
{ 
    var postKey = Database.database().reference().childByAutoId().key 
    let storyboard = UIStoryboard(name: "Main", bundle: nil) 
    let extraViewController = storyboard?.instantiateViewControllerWithIdentifier("ExtraViewController") as! ExtraViewController 
    extraViewController.postKey = postKey 
}

來源

2017-09-16 11:00:03

仍然有錯誤.. –

錯誤：使用未解析的標識符「故事板」錯誤：預期聲明 –

是的，我已複製並粘貼它 –

您不能創建與名字對象其名稱與任何類ExtraViewController

匹配替換代碼

let ExtraViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ExtraViewController") as! ExtraViewController 

    ExtraViewController.postKey = postKey

隨着

let extraViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ExtraViewController") as! ExtraViewController 

    extraViewController.postKey = postKey

來源

2017-09-16 10:57:54

錯誤：無法解析的標識符「故事板」錯誤的使用方法：預計報關 –

@DaniKemper你有相同的兩個故事板視圖控制器？ –

不，具有第一個var postKey的ViewController是一個名爲「class Post」的類。 –

將var從一個類傳遞到ViewController

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