我有一个UIView类
class FloatingView : UIView {
lazy var floatingButton : UIButton = {
let button = UIButton(type: UIButtonType.system)
button.setBackgroundImage(#imageLiteral(resourceName: "ic_add_circle_white_36pt"), for: .normal)
button.tintColor = UIColor().themePurple()
button.addTarget(self, action: #selector(buttonClicked), for: UIControlEvents.touchUpInside)
button.translatesAutoresizingMaskIntoConstraints = false
return button
}()
override init(frame: CGRect) {
super.init(frame: frame)
setupViews()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setupViews(){ addSubview(floatingButton) }
override func didMoveToWindow() {
super.didMoveToWindow()
floatingButton.rightAnchor.constraint(equalTo: layoutMarginsGuide.rightAnchor).isActive = true
floatingButton.bottomAnchor.constraint(equalTo: layoutMarginsGuide.bottomAnchor).isActive = true
floatingButton.widthAnchor.constraint(equalToConstant: 60).isActive = true
floatingButton.heightAnchor.constraint(equalToConstant: 60).isActive = true
}
@objc func buttonClicked (){
print("Clicked..")
}
将此添加到视图中
let floatingButton = FloatingView()
view.addSubview(floatingButton)
我还指定了浮动视图的约束。
按预期将该按钮添加到视图中,但单击该按钮时不会调用"buttonClicked“函数。按钮上的淡入淡出动画在单击时仍然有效。我尝试过UITapGesture,但不起作用。
我更新了这个类,如下所示
class FloatingView{
lazy var floatingButton : UIButton = {
let button = UIButton(type: UIButtonType.system)
button.setBackgroundImage(#imageLiteral(resourceName: "ic_add_circle_white_36pt"), for: .normal)
button.tintColor = UIColor().themePurple()
button.addTarget(self, action: #selector(buttonClicked(_:)), for: UIControlEvents.touchUpInside)
button.translatesAutoresizingMaskIntoConstraints = false
return button
}()
private var view : UIView!
func add(onview: UIView ){
view = onview
configureSubViews()
}
private func configureSubViews(){
view.addSubview(floatingButton)
floatingButton.rightAnchor.constraint(equalTo: view.layoutMarginsGuide.rightAnchor).isActive = true
floatingButton.bottomAnchor.constraint(equalTo: view.layoutMarginsGuide.bottomAnchor).isActive = true
floatingButton.widthAnchor.constraint(equalToConstant: 60).isActive = true
floatingButton.heightAnchor.constraint(equalToConstant: 60).isActive = true
}
@objc func buttonClicked(_ sender : UIButton){
print("Button Clicked")
}
}
和在控制器中
let flButton = FloatingView()
flButton.add(onview: view)
我正在尝试创建一个浮动的操作按钮like this。我不确定我这样做的方式是否正确。
发布于 2018-06-11 15:50:45
我通过将自定义类中的约束设置为其superview而不是控制器,以某种方式修复了它。
func configureSubviews(){
if let superView = superview {
superView.addSubview(floatingButton)
widthAnchor.constraint(equalToConstant: circleSpanArea).isActive = true
heightAnchor.constraint(equalTo: widthAnchor).isActive = true
centerXAnchor.constraint(equalTo: floatingButton.centerXAnchor).isActive = true
centerYAnchor.constraint(equalTo: floatingButton.centerYAnchor).isActive = true
floatingButton.rightAnchor.constraint(equalTo: superView.layoutMarginsGuide.rightAnchor).isActive = true
floatingButton.bottomAnchor.constraint(equalTo: superView.layoutMarginsGuide.bottomAnchor).isActive = true
floatingButton.heightAnchor.constraint(equalToConstant: 60).isActive = true
floatingButton.widthAnchor.constraint(equalToConstant: 60).isActive = true
}
}
发布于 2018-06-08 19:35:17
尝试将操作更改为
action: #selector(buttonClicked(_:))
和函数
@objc func buttonClicked(_ sender: UIButton){..}
https://stackoverflow.com/questions/50759592
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