Swift3 如何使用Swift 3 UIPickerView引用多行?
如何在标签中显示“兰博基尼和白色” 我试图找出如何在每列中独立引用所选行Swift3 如何使用Swift 3 UIPickerView引用多行?,swift3,uipickerview,Swift3,Uipickerview,如何在标签中显示“兰博基尼和白色” 我试图找出如何在每列中独立引用所选行 import UIKit class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource { @IBOutlet var titlelbl: UILabel! @IBOutlet var pickerView: UIPickerView! var cars = [["BMW","Lamborghini","Ran
import UIKit
class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
@IBOutlet var titlelbl: UILabel!
@IBOutlet var pickerView: UIPickerView!
var cars = [["BMW","Lamborghini","Range Rover", "Bentley", "Maserati", "Rolls Royce"],["Blue","Green","White"]]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
pickerView.delegate = self
pickerView.dataSource = self
}
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 2
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return cars[component].count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return cars[component][row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
titlelbl.text = "\(cars[0][row]) and \(cars[1][row])"
}
}
找到了答案,
import UIKit
class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
@IBOutlet var titlelbl: UILabel!
@IBOutlet var pickerView: UIPickerView!
var cars = [["BMW","Lamborghini","Range Rover", "Bentley", "Maserati", "Rolls Royce"],["Blue","Green","White"]]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
pickerView.delegate = self
pickerView.dataSource = self
}
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 2
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return cars[component].count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return cars[component][row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
let selectedValue1 = pickerView.selectedRow(inComponent: 0)
let selectedValue2 = pickerView.selectedRow(inComponent: 1)
titlelbl.text = "\(cars[0][selectedValue1]) and \(cars[1][selectedValue2])"
}
}
找到了答案,
import UIKit
class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
@IBOutlet var titlelbl: UILabel!
@IBOutlet var pickerView: UIPickerView!
var cars = [["BMW","Lamborghini","Range Rover", "Bentley", "Maserati", "Rolls Royce"],["Blue","Green","White"]]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
pickerView.delegate = self
pickerView.dataSource = self
}
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 2
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return cars[component].count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return cars[component][row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
let selectedValue1 = pickerView.selectedRow(inComponent: 0)
let selectedValue2 = pickerView.selectedRow(inComponent: 1)
titlelbl.text = "\(cars[0][selectedValue1]) and \(cars[1][selectedValue2])"
}
}
[
func numberOfComponents(在pickerView:UIPickerView中)->Int{
返回2
}
][
func numberOfComponents(在pickerView:UIPickerView中)->Int{
返回2
}
]