两个UIPickerViews和不同的组合导致不同的照片
我很新的迅速Xcode,并希望对UIPickerView一些帮助。
我正在尝试创build两个UIPickerViews,一个名为“From”,另一个名为“To”。 “From”包含A,B,“To”包含B,C
基本上,如果“From”是A并且“To”是B,那么汽车的照片将出现在相同的viewController上。 如果“发件人”是B,“收件人”是B,则会出现草莓照片等等。
任何人都可以给我任何提示如何做到这一点? 我只设法创build了第一个UIPickerView。
import UIKit class ViewController: UIViewController,UIPickerViewDelegate, UIPickerViewDataSource { @IBOutlet var Picker1:UIPickerView! var Array = ["A","B","C"] override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib Picker1.delegate = self Picker1.dataSource = self } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? { return Array[row] } func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { return Array.count } func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int { return 1 } }
var savedVal1 = "" as String var savedVal2 = "" as String var array1 = NSArray() var array2 = NSArray() override func viewDidLoad() { super.viewDidLoad() Picker1.delegate = self Picker1.dataSource = self Picker1.tag = 1 Picker2.delegate = self Picker2.dataSource = self Picker2.tag = 2 } func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? { if pickerView.tag == 1 { return array1[row] } else{ return array2[row] } } func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { if pickerView.tag == 1 { return array1.count } else{ return array2.count } } func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int{ return 1 } func pickerView(pickerView: UIPickerView!, didSelectRow row: Int, inComponent component: Int){ if pickerView.tag == 1 { savedVal1 = array1[row] // compare 2 values here & then take steps which fulfill your criteria. } else{ savedVal2 = array2[row] //compare 2 values here & then take steps which fulfill your criteria. } }
希望能帮助到你。
你的PickerView2在哪里?
@IBOutlet var Picker2:UIPickerView!
在你完成viewdidload加载
Picker1.delegate = self Picker1.dataSource = self
如果您使用相同的数据源或不同,请检查UIPickerViewDelegate中的选取器视图,UIPickerViewDataSource方法
If (Picker1) { } else if (Picker2) { }