1. 扩展view，给他的子类控件添加点击方法
extension UIView {
funcaddTap(_aBlock:@escaping()->()) {
block= aBlock
isUserInteractionEnabled = true
ifletbutton =selfas?UIButton{
button.addTarget(self, action:#selector(tapAction), for: .touchUpInside)
}else{
lettap =UITapGestureRecognizer(target:self, action:#selector(tapAction))
addGestureRecognizer(tap)
}
}
@objc private func tapAction() {
block?()
}
}
2. 属性
获取父控制器
extension UIView {
public var parentViewController: UIViewController? {
weakvarparentResponder:UIResponder? =self
whileparentResponder!=nil{
parentResponder = parentResponder!.next
ifletviewController = parentResponderas?UIViewController{
returnviewController
}
}
returnnil
}
}
size
extension UIView {
public var size: CGSize {
get {
return frame.size
}
set {
width = newValue.width
height = newValue.height
}
}
}
height
extension UIView {
public var height: CGFloat {
get {
return frame.size.height
}
set {
frame.size.height = newValue
}
}
}
width
extension UIView {
public var width: CGFloat {
get {
return frame.size.width
}
set {
frame.size.width = newValue
}
}
}
x
extension UIView {
public var x: CGFloat {
get {
return frame.origin.x
}
set {
frame.origin.x = newValue
}
}
}
y
extension UIView {
public var y: CGFloat {
get {
return frame.origin.y
}
set {
frame.origin.y = newValue
}
}
}
方法
第一响应者
extension UIView {
public func firstResponder() -> UIView? {
var views = [UIView](arrayLiteral: self)
var i = 0
repeat {
let view = views[i]
if view.isFirstResponder {
return view
}
views.append(contentsOf: view.subviews)
i += 1
} while i < views.count
return nil
}
}
添加多个子视图
extension UIView {
public func addSubviews(_ subviews: [UIView]) {
subviews.forEach({ self.addSubview($0) })
}
public func removeSubviews() {
subviews.forEach({ $0.removeFromSuperview() })
}
}
备注：整理项目中常用到的一些技术，以后经常会记录和完善，部分来源网络
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