用Swift改变占位符文本颜色

我有一个实现深蓝色UITextField的设计，因为占位符文本默认是深灰色的颜色，我几乎不能弄清楚占位符文本说什么。

我当然在谷歌上搜索过这个问题，但我还没有想出一个解决方案，而使用Swift语言而不是Obj-c。

有没有一种方法来改变一个UITextField的占位符文本颜色使用Swift?

当前回答

Swift 4:

txtControl.attributedPlaceholder = NSAttributedString(string: "Placeholder String...",attributes: [NSAttributedStringKey.foregroundColor: UIColor.gray])

objective - c:

UIColor *color = [UIColor grayColor];
txtControl.attributedPlaceholder = [[NSAttributedString alloc] initWithString:@"Placeholder String..." attributes:@{NSForegroundColorAttributeName: color}];

2018-12-31 19:13:29

其他回答

Swift 4

txtField1.attributedPlaceholder = NSAttributedString(string: "-", attributes: [NSAttributedStringKey.foregroundColor: UIColor.white])

2018-03-06 08:40:19

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

2017-02-10 11:01:19

就我而言，我做了以下事情:

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])
            }
        }
    }
}

2018-12-25 05:50:58

对于iOS13

+(void)ChangeplaceholderColor :(UITextField *)TxtFld andColor:(UIColor*)color { 
    NSMutableAttributedString *placeholderAttributedString = [[NSMutableAttributedString alloc] initWithAttributedString:TxtFld.attributedPlaceholder];
       [placeholderAttributedString addAttribute:NSForegroundColorAttributeName value:color range:NSMakeRange(0, [placeholderAttributedString length])];
       TxtFld.attributedPlaceholder = placeholderAttributedString;

}

2019-10-10 09:20:16

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!])
        }
    }
}

2018-02-21 14:37:13

用Swift改变占位符文本颜色

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