在 Swift 上更改选择器视图的颜色
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【中文标题】在 Swift 上更改选择器视图的颜色【英文标题】：Changing colour of picker view on Swift 【发布时间】：2017-12-09 11:57:30 【问题描述】：我的 viewController 上有 5 个选择器视图。我想更改所有选择器视图的颜色。我做了一切，但我无法成功。它默认给我黑色。我想让它变白。我怎样才能解决这个问题。谁能帮我解决我的代码？另外，用户从pickerview输入一些数据后，如果他或她先返回页面然后再次来到这个屏幕，数据将保留他或她输入到pickerview的任何内容，此过程后数据将不会被清除。我该怎么做？
class LoggedInVC: UIViewController, UIPickerViewDataSource,UIPickerViewDelegate
@IBOutlet weak var cinsiyetButton: UIButton!
@IBOutlet weak var türButton: UIButton!
@IBOutlet weak var ageButton: UIButton!
@IBOutlet weak var colorBotton: UIButton!
@IBOutlet weak var healthButton: UIButton!
@IBOutlet weak var cinsiyetPicker: UIPickerView!
@IBOutlet weak var turPicher: UIPickerView!
@IBOutlet weak var agePicker: UIPickerView!
@IBOutlet weak var colorPicker: UIPickerView!
@IBOutlet weak var healthPicker: UIPickerView!
let cinsiyet = ["Erkek","Dişi"]
let tur = ["pug","terrier","dogo","doberman"]
let color = ["siyah","beyaz","kahverangi","karışık"]
let age = ["1","2","3","4","5"]
let health = ["kısır","Kısır Değil"]
override func viewDidLoad()
super.viewDidLoad()
cinsiyetPicker.dataSource = self
cinsiyetPicker.delegate = self
turPicher.dataSource = self
turPicher.delegate = self
agePicker.dataSource = self
agePicker.delegate = self
colorPicker.dataSource = self
colorPicker.delegate = self
healthPicker.dataSource = self
healthPicker.delegate = self
override func didReceiveMemoryWarning()
super.didReceiveMemoryWarning()
@IBAction func cinsiyetPressed(_ sender: Any)
cinsiyetPicker.isHidden = false
@IBAction func turPressed(_ sender: Any)
turPicher.isHidden = false
@IBAction func agePressed(_ sender: Any)
agePicker.isHidden = false
@IBAction func colorPressed(_ sender: Any)
colorPicker.isHidden = false
@IBAction func healthPressed(_ sender: Any)
healthPicker.isHidden = false
func numberOfComponents(in pickerView: UIPickerView) -> Int
return 1
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
if pickerView.tag==1
return cinsiyet.count
else if pickerView.tag==2
return tur.count
else if pickerView.tag==3
return age.count
else if pickerView.tag==4
return color.count
else if pickerView.tag==5
return health.count
return health.count
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?
if pickerView.tag==1
return cinsiyet[row]
else if pickerView.tag==2
return tur[row]
else if pickerView.tag==3
return age[row]
else if pickerView.tag==4
return color[row]
else if pickerView.tag==5
return health[row]
return health[row]
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
if pickerView.tag==1
cinsiyetButton.setTitle(cinsiyet[row], for: UIControlState())
cinsiyetPicker.isHidden = true
if pickerView.tag==2
türButton.setTitle(tur[row], for: UIControlState())
turPicher.isHidden = true
if pickerView.tag==3
ageButton.setTitle(age[row], for: UIControlState())
agePicker.isHidden = true
if pickerView.tag==4
colorBotton.setTitle(color[row], for: UIControlState())
colorPicker.isHidden = true
if pickerView.tag==5
healthButton.setTitle(health[row], for: UIControlState())
healthPicker.isHidden = true
【问题讨论】：
你的问题不清楚。您实际上要更改选择器的哪一部分？到目前为止，您尝试过什么？ 【参考方案1】：我认为只需使用此委托方法即可实现您的要求
func pickerView(_ pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString?
【讨论】：
你能详细输入吗？ 通过改变前景色或背景色返回任何属性字符串，例如：NSAttributedString(string: string, attributes: [NSForegroundColorAttributeName: UIColor.black])以上是关于在 Swift 上更改选择器视图的颜色的主要内容，如果未能解决你的问题，请参考以下文章