更改UITextField占位符颜色

Question

How to dynamically change placeholder color of the UITextField ? This is always the same system color.

No option in xib editor.

Answer 1

From Docs

@property(nonatomic, copy) NSAttributedString *attributedPlaceholder

This property is nil by default. If set, the placeholder string is drawn using a 70% grey color and the remaining style information (except the text color) of the attributed string. Assigning a new value to this property also replaces the value of the placeholder property with the same string data, albeit without any formatting information. Assigning a new value to this property does not affect any other style-related properties of the text field.

Objective-C

NSAttributedString *str = [[NSAttributedString alloc] initWithString:@"Some Text" attributes:@{ NSForegroundColorAttributeName : [UIColor redColor] }];
self.myTextField.attributedPlaceholder = str;

Swift

let str = NSAttributedString(string: "Text", attributes: [NSForegroundColorAttributeName:UIColor.redColor()])
myTextField.attributedPlaceholder = str

Swift 4

let str = NSAttributedString(string: "Text", attributes: [NSAttributedString.Key.foregroundColor: UIColor.red])
myTextField.attributedPlaceholder = str

Answer 2

_placeholderLabel.textColor

In swift

myTextField.attributedPlaceholder = 
NSAttributedString(string: "placeholder", attributes:[NSForegroundColorAttributeName : UIColor.redColor()])

Objective-C

UIColor *color = [UIColor grayColor];
nameText.attributedPlaceholder =
   [[NSAttributedString alloc]
   initWithString:@"Full Name"
   attributes:@{NSForegroundColorAttributeName:color}];

PS Copied 3 different answers from Stackoverflow.

Answer 3

使用以下代码

[YourtextField setValue:[UIColor colorWithRed:97.0/255.0 green:1.0/255.0 blue:17.0/255.0 alpha:1.0] forKeyPath:@"_placeholderLabel.textColor"];

Answer 4

First add this extension

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

Then you can change placeholder text color via storyboard or by just setting it like this :

textfield.placeHolderTextColor = UIColor.red

Answer 5

I use this in SWIFT:

myTextField.attributedPlaceholder = NSAttributedString(string: "placeholder", attributes: [NSForegroundColorAttributeName : UIColor.redColor()])

It seems that this works for others... I have no idea why it haven't worked for me before... maybe some project settings. Thanks for the comments. Currently I have no way how to test it again.

Obsolete: But I don't know why, text is applied correctly, but placeholder color remains same (black/gray).

--iOS8

Answer 6

Try this:

NSAttributedString *strUser = [[NSAttributedString alloc] initWithString:@"Username" attributes:@{ NSForegroundColorAttributeName : [UIColor whiteColor] }];
NSAttributedString *strPassword = [[NSAttributedString alloc] initWithString:@"Password" attributes:@{ NSForegroundColorAttributeName : [UIColor whiteColor] }];

self.username.attributedPlaceholder = strUser;
self.password.attributedPlaceholder = strPassword;

Answer 7

您可以使用以下代码

[txtUsername setValue:[UIColor darkGrayColor] forKeyPath:@"_placeholderLabel.textColor"];

Answer 8

This solution works without any subclassing and without any private ivars:

@IBOutlet weak var emailTextField: UITextField! {
    didSet {
        if emailTextField != nil {
            let placeholderText = NSLocalizedString("Tap here to enter", comment: "Tap here to enter")
            let placeholderString = NSAttributedString(string: placeholderText, attributes: [NSForegroundColorAttributeName: UIColor(white: 0.66, alpha: 1.0)])
            emailTextField.attributedPlaceholder = placeholderString
        }
    }
}

Answer 9

Try This.

UIColor *color = [UIColor redColor];
self.txtUsername.attributedPlaceholder = [[NSAttributedString alloc] initWithString:@"Your Placeholder Text" attributes:@{NSForegroundColorAttributeName:color}];

Answer 10

@DogCoffee's answer in Swift would be

let placeholderAttrs = [ NSForegroundColorAttributeName : UIColor.redColor()]
let placeholder = NSAttributedString(string: "Some text", attributes: placeholderAttrs)

textField.attributedPlaceholder = placeholder

Answer 11

This is an improved version of the extension provided by @Medin Piranej above (good idea by the way!). This version avoids an endless cycle if you try to get the placeHolderTextColor and prevents crashes if the color set is nil.

public extension UITextField {

@IBInspectable public var placeholderColor: UIColor? {
    get {
        if let attributedPlaceholder = attributedPlaceholder, attributedPlaceholder.length > 0 {
            var attributes = attributedPlaceholder.attributes(at: 0,
                                                              longestEffectiveRange: nil,
                                                              in: NSRange(location: 0, length: attributedPlaceholder.length))
            return attributes[NSForegroundColorAttributeName] as? UIColor
        }
        return nil
    }
    set {
        if let placeholderColor = newValue {
            attributedPlaceholder = NSAttributedString(string: placeholder ?? "",
                                                       attributes:[NSForegroundColorAttributeName: placeholderColor])
        } else {
            // The placeholder string is drawn using a system-defined color.
            attributedPlaceholder = NSAttributedString(string: placeholder ?? "")
        }
    }
}

}

Answer 12

for swift 3 ,we can use this code for change the placeholder text color for UITextfield

 let placeholderColor = UIColor.red
 mytextField.attributedPlaceholder = NSAttributedString(string: mytextField.placeholder, attributes: [NSForegroundColorAttributeName : placeholderColor])

Answer 13

Swift 4

let placeholderColor = UIColor.red
self.passwordTextField?.attributedPlaceholder = 
NSAttributedString(string:"placeholderText", attributes: 
[NSAttributedStringKey.foregroundColor : placeholderColor])

Answer 14

[yourtextFieldName setValue:[UIColor lightGrayColor] forKeyPath:@"_placeholderLabel.textColor"];