<分区>
我下面的代码使用了 UIPickerView 并且运行良好。但是我不知道如何为每个包含单独信息的 2 个不同的选择器 View 重复此过程。 l2 和 pl2 是第二个选择器 View 和标签。
import UIKit
class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate{
@IBOutlet var l: UILabel!
@IBOutlet var pl: UIPickerView!
@IBOutlet var l2: UILabel!
@IBOutlet var pl2: UIPickerView!
override func viewDidLoad() {
super.viewDidLoad()
pl.dataSource = self
pl.delegate = self
pl2.dataSource = self
pl2.delegate = self
}
let choices = ["1","2","3","4","5","6","7","8","9","10","11"]
let choices2 = ["1","judo","3","4","5","6","7","8","9","10","11"]
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if pickerView == pl {
return choices[row]
} else if pickerView == pl2 {
return choices2[row]
} else {
return nil
}
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return choices.count
return choices2.count
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerView == pl {
l.text = choices[row]
} else if pickerView == pl2 {
l2.text = choices2[row]
}
}
}