Modification du Texte d'espace Réservé de Couleur avec Swift

Vous pouvez définir le texte de l'espace réservé à l'aide d'un attribué chaîne. Passer la couleur que vous voulez avec la attributes:

var myTextField = UITextField(frame: CGRect(x: 0, y: 0, width: 200, height: 30))
myTextField.backgroundColor = .blue
myTextField.attributedPlaceholder = NSAttributedString(string: "placeholder text",
                             attributes: [NSForegroundColorAttributeName: UIColor.yellow])

Pour Swift 3+ utilisation suivantes:

myTextField.attributedPlaceholder = NSAttributedString(string: "placeholder text",
                             attributes: [NSAttributedStringKey.foregroundColor: UIColor.white])

Pour Swift 4.2 utilisation suivantes:

myTextField.attributedPlaceholder = NSAttributedString(string: "placeholder text",
                             attributes: [NSAttributedString.Key.foregroundColor: UIColor.white])

Créer UITextField Extension comme ceci:

extension UITextField{
   @IBInspectable var placeHolderColor: UIColor? {
        get {
            return self.placeHolderColor
        }
        set {
            self.attributedPlaceholder = NSAttributedString(string:self.placeholder != nil ? self.placeholder! : "", attributes:[NSAttributedString.Key.foregroundColor: newValue!])
        }
    }
}

Et dans votre scénario ou .xib. Vous verrez

Dans Swift 3.0, Utilisez

let color = UIColor.lightText
textField.attributedPlaceholder = NSAttributedString(string: textField.placeholder, attributes: [NSForegroundColorAttributeName : color])

Xcode 9.2 Swift 4

extension UITextField{
    @IBInspectable var placeHolderColor: UIColor? {
        get {
            return self.placeHolderColor
        }
        set {
            self.attributedPlaceholder = NSAttributedString(string:self.placeholder != nil ? self.placeholder! : "", attributes:[NSAttributedStringKey.foregroundColor: newValue!])
        }
    }
}

Pour Swift 3 et 3.1 cela fonctionne parfaitement bien:

passField.attributedPlaceholder = NSAttributedString(string: "password", attributes: [NSForegroundColorAttributeName: UIColor.white])

Voici ma rapidité de mise en œuvre de swift 4:

extension UITextField {
    func placeholderColor(_ color: UIColor){
        var placeholderText = ""
        if self.placeholder != nil{
            placeholderText = self.placeholder!
        }
        self.attributedPlaceholder = NSAttributedString(string: placeholderText, attributes: [NSAttributedStringKey.foregroundColor : color])
    }
}

à utiliser comme:

streetTextField?.placeholderColor(AppColor.blueColor)

espère que cela aide quelqu'un!

Pour Swift

Créer UITextField Extension

extension UITextField{

    func setPlaceHolderColor(){
        self.attributedPlaceholder = NSAttributedString(string: self.placeholder!, attributes: [NSForegroundColorAttributeName : UIColor.white])
    }
}

Si vous Êtes ensemble à partir de la table de montage séquentiel.

extension UITextField{
    @IBInspectable var placeHolderColor: UIColor? {
        get {
            return self.placeHolderColor
        }
        set {
            self.attributedPlaceholder = NSAttributedString(string:self.placeholder != nil ? self.placeholder! : "", attributes:[NSAttributedString.Key.foregroundColor : newValue!])
        }
    }
}

Ici, suis-je écrire tous les UIDesignable de UITextField. Avec l'aide de ce code, vous pouvez accéder directement à partir de l'INTERFACE utilisateur du fichier de l'Inspecteur storyboard

@IBDesignable
class CustomTextField: UITextField {
@IBInspectable var leftImage: UIImage? {
didSet {
updateView()
}
}
@IBInspectable var leftPadding: CGFloat = 0 {
didSet {
updateView()
}
}
@IBInspectable var rightImage: UIImage? {
didSet {
updateView()
}
}
@IBInspectable var rightPadding: CGFloat = 0 {
didSet {
updateView()
}
}
private var _isRightViewVisible: Bool = true
var isRightViewVisible: Bool {
get {
return _isRightViewVisible
}
set {
_isRightViewVisible = newValue
updateView()
}
}
func updateView() {
setLeftImage()
setRightImage()
//Placeholder text color
    attributedPlaceholder = NSAttributedString(string: placeholder != nil ?  placeholder! : "", attributes:[NSAttributedString.Key.foregroundColor: tintColor])
}
func setLeftImage() {
leftViewMode = UITextField.ViewMode.always
var view: UIView
if let image = leftImage {
let imageView = UIImageView(frame: CGRect(x: leftPadding, y: 0, width: 20, height: 20))
imageView.image = image
//Note: In order for your image to use the tint color, you have to select the image in the Assets.xcassets and change the "Render As" property to "Template Image".
        imageView.tintColor = tintColor
var width = imageView.frame.width + leftPadding
if borderStyle == UITextField.BorderStyle.none || borderStyle == UITextField.BorderStyle.line {
width += 5
}
view = UIView(frame: CGRect(x: 0, y: 0, width: width, height: 20))
view.addSubview(imageView)
} else {
view = UIView(frame: CGRect(x: 0, y: 0, width: leftPadding, height: 20))
}
leftView = view
}
func setRightImage() {
rightViewMode = UITextField.ViewMode.always
var view: UIView
if let image = rightImage, isRightViewVisible {
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 20, height: 20))
imageView.image = image
//Note: In order for your image to use the tint color, you have to select the image in the Assets.xcassets and change the "Render As" property to "Template Image".
        imageView.tintColor = tintColor
var width = imageView.frame.width + rightPadding
if borderStyle == UITextField.BorderStyle.none || borderStyle == UITextField.BorderStyle.line {
width += 5
}
view = UIView(frame: CGRect(x: 0, y: 0, width: width, height: 20))
view.addSubview(imageView)
} else {
view = UIView(frame: CGRect(x: 0, y: 0, width: rightPadding, height: 20))
}
rightView = view
}
@IBInspectable public var borderColor: UIColor = UIColor.clear {
didSet {
layer.borderColor = borderColor.cgColor
}
}
@IBInspectable public var borderWidth: CGFloat = 0 {
didSet {
layer.borderWidth = borderWidth
}
}
@IBInspectable public var cornerRadius: CGFloat = 0 {
didSet {
layer.cornerRadius = cornerRadius
}
}
@IBInspectable public var bottomBorder: CGFloat = 0 {
didSet {
borderStyle = .none
layer.backgroundColor = UIColor.white.cgColor
layer.masksToBounds = false
//  layer.shadowColor = UIColor.gray.cgColor
        layer.shadowOffset = CGSize(width: 0.0, height: 1.0)
layer.shadowOpacity = 1.0
layer.shadowRadius = 0.0
}
}
@IBInspectable public var bottomBorderColor : UIColor = UIColor.clear {
didSet {
layer.shadowColor = bottomBorderColor.cgColor
layer.shadowOffset = CGSize(width: 0.0, height: 1.0)
layer.shadowOpacity = 1.0
layer.shadowRadius = 0.0
}
}
///Sets the placeholder color
@IBInspectable var placeHolderColor: UIColor? {
get {
return self.placeHolderColor
}
set {
self.attributedPlaceholder = NSAttributedString(string:self.placeholder != nil ? self.placeholder! : "", attributes:[NSAttributedString.Key.foregroundColor: newValue!])
}
}
}

Dans mon cas, j'ai fait suivant:

extension UITextField {
@IBInspectable var placeHolderColor: UIColor? {
get {
if let color = self.attributedPlaceholder?.attribute(.foregroundColor, at: 0, effectiveRange: nil) as? UIColor {
return color
}
return nil
}
set (setOptionalColor) {
if let setColor = setOptionalColor {
let string = self.placeholder ?? ""
self.attributedPlaceholder = NSAttributedString(string: string , attributes:[NSAttributedString.Key.foregroundColor: setColor])
}
}
}
}

Pour Swift

func setPlaceholderColor(textField: UITextField, placeholderText: String) {
textField.attributedPlaceholder = NSAttributedString(string: placeholderText, attributes: [NSForegroundColorAttributeName: UIColor.pelorBlack])
}

Vous pouvez utiliser cette;

self.setPlaceholderColor(textField: self.emailTextField, placeholderText: "E-Mail/Username")

Il est plus à propos de personnaliser votre textField mais de toute façon je vais partager ce code obtenu à partir d'une autre page et c'est un peu mieux:

import UIKit
extension UITextField {
func setBottomLine(borderColor: UIColor, fontColor: UIColor, placeHolderColor:UIColor, placeHolder: String) {
self.borderStyle = UITextBorderStyle.none
self.backgroundColor = UIColor.clear
let borderLine = UIView()
let height = 1.0
borderLine.frame = CGRect(x: 0, y: Double(self.frame.height) - height, width: Double(self.frame.width), height: height)
self.textColor = fontColor
borderLine.backgroundColor = borderColor
self.addSubview(borderLine)
self.attributedPlaceholder = NSAttributedString(
string: placeHolder,
attributes: [NSAttributedStringKey.foregroundColor: placeHolderColor]
)
}
}

Et vous pouvez l'utiliser comme ceci:

self.textField.setBottomLine(borderColor: lineColor, fontColor: fontColor, placeHolderColor: placeHolderColor, placeHolder: placeHolder)

En sachant que vous avez un UITextField connecté à un ViewController.

Source: http://codepany.com/blog/swift-3-custom-uitextfield-with-single-line-input/

L'utiliser pour l'ajout d'un attribuées espace réservé:

let attributes : [String : Any]  = [ NSForegroundColorAttributeName: UIColor.lightGray,
NSFontAttributeName : UIFont(name: "Helvetica Neue Light Italic", size: 12.0)!
]
x_textfield.attributedPlaceholder = NSAttributedString(string: "Placeholder Text", attributes:attributes)

yourTextfield.attributedPlaceholder = NSAttributedString(string: "your placeholder text",attributes: [NSForegroundColorAttributeName: UIColor.white])