情景:我想在一个xcode项目中为我的textField使用一个自定义的UITextField
类。我想让textField看起来像这样:
我没有问题,使边缘变圆,并改变我的占位符的颜色,但我不知道如何保持底部边缘平坦,并只在底部绘制一个黑色边框。
这是我的代码:
import UIKit
class GrayTextField: UITextField {
override func awakeFromNib() {
super.awakeFromNib()
backgroundColor = .grayf1f1f1
layer.borderWidth = 1
layer.borderColor = UIColor.black.cgColor
layer.cornerRadius = 10
clipsToBounds = true
}
override var placeholder: String? {
didSet {
let attributes = [ NSAttributedString.Key.foregroundColor: UIColor.black, NSAttributedString.Key.font : UIFont.systemFont(ofSize: 16, weight: .thin)]
attributedPlaceholder = NSAttributedString(string: placeholder ?? "", attributes: attributes)
}
}
}
我现在的结果是:
发布于 2019-07-11 03:21:41
嗯,经过一些研究之后,我就这么做了。下面是我的最终代码:
import UIKit
class GrayTextField: UITextField {
override func awakeFromNib() {
super.awakeFromNib()
backgroundColor = .grayf1f1f1
clipsToBounds = true
let maskPath = UIBezierPath(roundedRect: self.bounds,
byRoundingCorners: [.topLeft, .topRight],
cornerRadii: CGSize(width: 10.0, height: 10.0))
let shape = CAShapeLayer()
shape.path = maskPath.cgPath
layer.mask = shape
addBottomBorder(with: .darkGray, andWidth: 1)
}
override var placeholder: String? {
didSet {
let attributes = [ NSAttributedString.Key.foregroundColor: UIColor.black, NSAttributedString.Key.font : UIFont.systemFont(ofSize: 16, weight: .thin)]
attributedPlaceholder = NSAttributedString(string: placeholder ?? "", attributes: attributes)
}
}
func addBottomBorder(with color: UIColor?, andWidth borderWidth: CGFloat) {
let border = UIView()
border.backgroundColor = color
border.autoresizingMask = [.flexibleWidth, .flexibleTopMargin]
border.frame = CGRect(x: 0, y: frame.size.height - borderWidth, width: frame.size.width, height: borderWidth)
addSubview(border)
}
}
这就是结果:
https://stackoverflow.com/questions/56976419
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