文本框占位符居中並更改顏色

Question

我想讓我的UITextField占位符center aligned並且還要更改placeholderColor 。 我已經使用此按鈕使文本中心對齊

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])
    }
}

並像下面這樣調用上面的擴展方法

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

但是我無法更改占位符的顏色。 如何更改占位符顏色？ 任何幫助表示贊賞。

Answer 1

嘗試使用如下所示的修改后的擴展名。

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)

Answer 2

只需嘗試此代碼

斯威夫特3.0

myTextField.textAlignment = .center

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