本文介绍了使用 Swift 更改占位符文本颜色的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
I have a design that implements a dark blue UITextField, as the placeholder text is by default a dark grey colour I can barely make out what the place holder text says.
I've googled the problem of course but I have yet to come up with a solution while using the Swift language and not Obj-c.
Is there a way to change the placeholder text colour in a UITextField using Swift?
解决方案
You can set the placeholder text using an attributed string. Just pass the color you want to the attributes parameter.
Swift 5:
let myTextField = UITextField(frame: CGRect(x: 0, y: 0, width: 200, height: 30))
myTextField.backgroundColor = .blue
myTextField.attributedPlaceholder = NSAttributedString(
string: "Placeholder Text",
attributes: [NSAttributedString.Key.foregroundColor: UIColor.white]
)
Swift 3:
myTextField.attributedPlaceholder = NSAttributedString(
string: "Placeholder Text",
attributes: [NSAttributedStringKey.foregroundColor: UIColor.white]
)
Older Swift:
myTextField.attributedPlaceholder = NSAttributedString(
string: "Placeholder Text",
attributes: [NSForegroundColorAttributeName: UIColor.white]
)
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