ios - 文本字段占位符居中并更改颜色

Question

我想让我的 UITextField 占位符为 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])
    }
}

并调用上面的扩展方法，如下所示

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

但我无法更改占位符的颜色。我应该如何更改占位符颜色？任何帮助表示赞赏。

Answer 1

尝试使用修改后的扩展，如下所示..

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)