Question

我的视图控制器中有一个选择器视图，并希望将所选行中的数据保存在变量中。我不想要一个按钮。我的Picker View附加到视图控制器委托和数据源。这是我的选择器视图代码：

    var colors = ["ISERV 1","ISERV 2","ISERV 3"]

    func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
        return 1
    }

    func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return colors.count
    }

    func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
        return colors[row]
    }

Answer 1

您需要实施didSelectRow：

func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
{
    let variable = colors[row]
}

Answer 2

这个代码你可以试试

var numbers = [1, 2 , 3]


var num:Int! = 1


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

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component:       Int) -> Int 
{
    return numbers.count
}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?
{
    return numbers[row]
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
{

     num = numbers[row]
    
 }

@IBAction func saveAccounts(_ sender: UIButton)
{


    
    if num == 1 {
        
        let aleart = UIAlertController(title: "The number is ONE", message: "", preferredStyle: .alert)
                   let action = UIAlertAction(title: "ok", style: .default) { (action) in
                   }
                   aleart.addAction(action)
                   present(aleart, animated: true, completion: nil)


    }else if num == 2 {
        
        let aleart = UIAlertController(title:"The number is TOW", message: "", preferredStyle: .alert)
                   let action = UIAlertAction(title: "ok", style: .default) { (action) in
                   }
                   aleart.addAction(action)
                   present(aleart, animated: true, completion: nil)

    }else if num == 3 {
        let aleart = UIAlertController(title: "The number is THREE", message: "", preferredStyle: .alert)
                   let action = UIAlertAction(title: "ok", style: .default) { (action) in
                   }
                   aleart.addAction(action)
                   present(aleart, animated: true, completion: nil)
    }

从选定的选择器视图行保存数据

2 个答案: