本文介绍了iOS UITextField下划线样式快速的处理方法,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
我已经添加了此图像,希望您能看到它,它是用户界面登录的图像.请注意,文本字段是透明的,但底部的行除外.我需要输入什么代码来产生这种影响?我可以在用户定义的运行时属性"中放入必要的信息吗?
I've added this image, I hope you can see it, of a user interface login. Notice the text field is transparent with the exception of the line at the bottom. What code do I put in to get that affect? Can I put the necessary information in the "user defined runtime attributes"?
推荐答案
如下所示创建 UITextField
的子类,然后只需在情节提要中将此类设置为 UITextField
Create a subclass of UITextField
as below, And simply set this class in your storyboard to UITextField
使用@IBInspectable迅速支持5
import UIKit
class HSUnderLineTextField: UITextField , UITextFieldDelegate {
let border = CALayer()
@IBInspectable open var lineColor : UIColor = UIColor.black {
didSet{
border.borderColor = lineColor.cgColor
}
}
@IBInspectable open var selectedLineColor : UIColor = UIColor.black {
didSet{
}
}
@IBInspectable open var lineHeight : CGFloat = CGFloat(1.0) {
didSet{
border.frame = CGRect(x: 0, y: self.frame.size.height - lineHeight, width: self.frame.size.width, height: self.frame.size.height)
}
}
required init?(coder aDecoder: (NSCoder?)) {
super.init(coder: aDecoder!)
self.delegate=self;
border.borderColor = lineColor.cgColor
self.attributedPlaceholder = NSAttributedString(string: self.placeholder ?? "",
attributes: [NSAttributedString.Key.foregroundColor: UIColor.white])
border.frame = CGRect(x: 0, y: self.frame.size.height - lineHeight, width: self.frame.size.width, height: self.frame.size.height)
border.borderWidth = lineHeight
self.layer.addSublayer(border)
self.layer.masksToBounds = true
}
override func draw(_ rect: CGRect) {
border.frame = CGRect(x: 0, y: self.frame.size.height - lineHeight, width: self.frame.size.width, height: self.frame.size.height)
}
override func awakeFromNib() {
super.awakeFromNib()
border.frame = CGRect(x: 0, y: self.frame.size.height - lineHeight, width: self.frame.size.width, height: self.frame.size.height)
self.delegate = self
}
func textFieldDidBeginEditing(_ textField: UITextField) {
border.borderColor = selectedLineColor.cgColor
}
func textFieldDidEndEditing(_ textField: UITextField) {
border.borderColor = lineColor.cgColor
}
}
从情节提要中设置 lineColor
和 selectedLineColor
并运行您的项目.
Set lineColor
and selectedLineColor
from the storyboard and run your project.
这篇关于iOS UITextField下划线样式快速的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!