swift 文本域占位符居中并更改颜色

vsaztqbk 于 2023-02-21 发布在 Swift

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我想将UITextField占位符设为center aligned，并更改placeholderColor。我已经使用this使文本居中对齐↓

extension String {
    func attributedString(aligment: NSTextAlignment) -> NSAttributedString {
        return NSAttributedString(text: self, aligment: aligment)
    }
}

extension NSAttributedString {
    convenience init(text: String, aligment: NSTextAlignment) {
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.alignment = aligment
        self.init(string: text, attributes: [NSAttributedStringKey.paragraphStyle: paragraphStyle])
    }
}

并调用以上扩展方法，如下所示

textField.attributedPlaceholder = NSAttributedString(text: text, aligment: .left)

但是我不能改变占位符的颜色。我应该如何改变我的占位符颜色？任何帮助都是感激的。

swift

来源：https://stackoverflow.com/questions/47986307/textfield-placeholder-centered-and-also-change-color

2条答案

按热度按时间

l7wslrjt1#

尝试使用修改后的扩展如下..

extension NSAttributedString 
    {
        convenience init(text: String, aligment: NSTextAlignment, color:UIColor) {
            let paragraphStyle = NSMutableParagraphStyle()
            paragraphStyle.alignment = aligment
            self.init(string: text, attributes: [NSAttributedStringKey.paragraphStyle: paragraphStyle, NSAttributedStringKey.foregroundColor:color])
        }
    }

- 用法**

textField.attributedPlaceholder = NSAttributedString(text: text, aligment: .left, color:UIColor.red)

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mbzjlibv2#

简单地试试这个代码
雨燕3.0

myTextField.textAlignment = .center

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

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swift 文本域占位符居中并更改颜色

2条答案

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