Swift下的基于UIView的位置属性扩展
一个比较简单能满足大部分需求的extensin,如下:
swift 的基于UIView的位置属性
包含:
上下左右:left、right、top、botom
高宽:height、width
中心点:centerX、centerY
直接拷贝作为你的extension文件即可。
/// MARK - UIView extension UIView { // MARK: - 常用位置属性 public var left:CGFloat { get { return self.frame.origin.x } set(newLeft) { var frame = self.frame frame.origin.x = newLeft self.frame = frame } } public var top:CGFloat { get { return self.frame.origin.y } set(newTop) { var frame = self.frame frame.origin.y = newTop self.frame = frame } } public var width:CGFloat { get { return self.frame.size.width } set(newWidth) { var frame = self.frame frame.size.width = newWidth self.frame = frame } } public var height:CGFloat { get { return self.frame.size.height } set(newHeight) { var frame = self.frame frame.size.height = newHeight self.frame = frame } } public var right:CGFloat { get { return self.left + self.width } } public var bottom:CGFloat { get { return self.top + self.height } } public var centerX:CGFloat { get { return self.center.x } set(newCenterX) { var center = self.center center.x = newCenterX self.center = center } } public var centerY:CGFloat { get { return self.center.y } set(newCenterY) { var center = self.center center.y = newCenterY self.center = center } } }