从单个 UIPicker 获取两个标签的值

Posted 2023-02-23

【中文标题】从单个 UIPicker 获取两个标签的值

【英文标题】：Getting values for two labels from single UIPicker

【发布时间】：2017-09-28 17:56:58

【问题描述】：

尝试使用单个 UIPicker 填充两个标签。它有一列，两个标签，每个标签的末尾有两个按钮。在单击显示 UIPicker 视图时

@IBOutlet weak var userLoc1: UILabel!
@IBOutlet weak var userLoc2: UILabel!

let location = ["location1", "Location2", "Location3", 
"Location4", "Location5", "Location6", "Location7"]


func numberOfComponents(in pickerView: UIPickerView) -> Int 
    return 1


func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int 
    var countRow:Int = 0

    if pickerView == LocationPickerView
    countRow = self.location.count
    
    return countRow


func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? 
    if pickerView == LocationPickerView
    
    let titleLocation = location[row]
        return titleLocation
    
    return ""


func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) 
    if pickerView == LocationPickerView
    
        selectedLocation1 = self.location[row]
        self.userLoc1.text = self.location[row]
        self.LocationPickerView.isHidden = true

 //anything that can be done here that can assign different values to 
  //two label  using the same UIPicker

    

非常感谢任何解决问题的指南

【问题讨论】：

到底是什么问题？

如何添加多个 UIPickerview 并相应地调用它们......只是一个黑客！！

@Smple_V 已经做到了，但这只是为了它！

@matiasofteby 有 2 个位置标签 Location1、Location2，用户可以用单个 UIPicker 填充 9 个位置。无法执行此逻辑

【参考方案1】：

只需在您的选择器视图中添加一个额外的列，然后添加第二个数组来填充该新列。

这与初始化选择器视图的方法完全相同，只是增加了一些逻辑。

let location1 = ["location1", "Location2", "Location3", 
"Location4", "Location5", "Location6", "Location7"]

let location2 = ["location8", "Location9", "Location10", 
"Location11", "Location12", "Location13", "Location14"]

// Set number of columns in your picker view
func numberOfComponents(in pickerView: UIPickerView) -> Int 
   return 2


// Set number of rows of each column to length of arrays
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int 
   switch component 
   case 0:
      return self.location1
   case 1:
      return self.location2
   default: break
    


// Set content of rows in each column
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? 
   switch component 
   case 0:
      return self.location1[row]
   case 1:
      return self.location2[row]
   default: break
    



func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) 
if pickerView == LocationPickerView

   switch component 
   case 0:
      selectedLocation1 = self.location1[row]
      self.userLoc1.text = self.location1[row]
   case 1:
      selectedLocation2 = self.location2[row]   
      self.userLoc2.text = self.location2[row]
   default: break
    

   self.LocationPickerView.isHidden = true

【讨论】：

只有一栏！！

你为什么要把自己限制在一个专栏里？如果您希望用户在一个选择器视图中提供两个输入，唯一合乎逻辑的事情就是提供给列。

感谢快速响应已更新代码如上