快速在标签中显示数组 [英] display array in a label in swift

问题描述

我想快速从 Parse 获取两个显示对象数据.我曾尝试以这种方式使用标签，但它只显示对象中的最后一个元素.请问如何让它在标签中显示对象中的所有元素.就像一个元素到一个标签.谢谢

I would like two display Object data gotten from Parse in swift. I have tried using label in this way but it only displays the last element in the object. Please how can I make it display all the element in the object in the label. Like one element to one label. Thanks

 let query = PFQuery(className: "Questionnaire")
 query.findObjectsInBackground { (objects, error) -> Void in
    if error == nil {

     // There were no errors in the fetch
        if let returnedObjects = objects {
     // var text = ""
     // Objects Array is not nil
     // loop through the array to get each object

             for object in returnedObjects {
                 print(object["question"] as! String)
                 // text.append(object["question"] as! String)
                self.Label.text = (object["question"] as! String)


             }


        }
    }
 }

推荐答案

你可以像这样一行，并用加入所有question，code> 分隔符，你可以将分隔符更改为任何 (empty, -,...etc)

if let returnedObjects = returnedObjects {
    self.Label.text = returnedObjects.map {($0["question"] as? String) ?? nil}.compactMap({$0}).joined(separator: ",")
}

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