前言
对应一个曾经开发 Android 的人来说,没有这些基础属性简直令人发指,还是表喷这个,认真写代码 - - #
正文
代码实现:
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class UILabelPadding : UILabel {
private var padding = UIEdgeInsetsZero
@IBInspectable
var paddingLeft: CGFloat {
get { return padding.left }
set { padding.left = newValue }
}
@IBInspectable
var paddingRight: CGFloat {
get { return padding.right }
set { padding.right = newValue }
}
@IBInspectable
var paddingTop: CGFloat {
get { return padding.top }
set { padding.top = newValue }
}
@IBInspectable
var paddingBottom: CGFloat {
get { return padding.bottom }
set { padding.bottom = newValue }
}
override func drawTextInRect(rect: CGRect) {
super.drawTextInRect(UIEdgeInsetsInsetRect(rect, padding))
}
override func textRectForBounds(bounds: CGRect, limitedToNumberOfLines numberOfLines: Int) -> CGRect {
let insets = self.padding
var rect = super.textRectForBounds(UIEdgeInsetsInsetRect(bounds, insets), limitedToNumberOfLines: numberOfLines)
rect.origin.x -= insets.left
rect.origin.y -= insets.top
rect.size.width += (insets.left + insets.right)
rect.size.height += (insets.top + insets.bottom)
return rect
}
}
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代码说明:
通过 IBInspectable 可以支持 UILable 在 Storyboard 里面就能指定内边距,非常方便:
以上就是Swift UILable 设置内边距实例代码,开发IOS应用需要用的可以参考下。