如何解决将填充/插入添加到 UIImage 作为 UITextField 的背景
我想让文本框右侧的三角形有一点填充,目前它就在边界处:
我的代码:
class Textfield: UITextField,UITextFieldDelegate {
func setup() {
let background = UIImage(systemName: "arrowtriangle.down.fill")
let imageView = UIImageView(image: background)
imageView.tintColor = .label
self.rightviewmode = .always
imageView.contentMode = .scaleAspectFit
self.rightView = imageView
}
}
如何添加插图使三角形更左一点?
解决方法
您可以覆盖文本字段方法。像这样
class Textfield: UITextField,UITextFieldDelegate {
@IBInspectable var leftPadding : CGFloat = 0
@IBInspectable var rightPadding : CGFloat = 10
private var padding: UIEdgeInsets = UIEdgeInsets()
override func awakeFromNib() {
super.awakeFromNib()
padding = UIEdgeInsets(top: 0,left: leftPadding,bottom: 0,right: rightPadding)
setup()
}
func setup() {
let background = UIImage(systemName: "arrowtriangle.down.fill")
let imageView = UIImageView(image: background)
imageView.tintColor = .label
self.rightViewMode = .always
imageView.contentMode = .scaleAspectFit
self.rightView = imageView
}
override open func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: padding)
}
override open func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: padding)
}
override open func editingRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: padding)
}
override func rightViewRect(forBounds bounds: CGRect) -> CGRect {
return CGRect(x: bounds.width - 30,y: 0,width: 20,height: bounds.height)
}
override func leftViewRect(forBounds bounds: CGRect) -> CGRect {
return CGRect(x: 10,height: bounds.height)
}
}
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