问题描述
我有一个 customSwitch UIView 类，在该类中，我对其应用了一些点击和平移手势。现在，我将该类作为一个组件，就像我可以在任何地方重用它一样，但问题是如果我在其他任何地方声明该自定义开关类，我将无法获得该自定义开关的平移和点击手势。我的问题是如何访问这些点击和平移手势？谢谢。
CustomSwitch.Swift
class CustomSwitch : UIView {
var minMaxButtonConstraint:CGFloat = 0
var buttonLeadingConstraint:NSLayoutConstraint!
var isSwitched = false
var tapGest = UITapGestureRecognizer()
var panGest = UIPanGestureRecognizer()
var button:UIButton = {
let btn = UIButton()
btn.translatesAutoresizingMaskIntoConstraints = false
btn.layer.cornerRadius = 6
btn.backgroundColor = .white
btn.imageView?.layer.transform = CATransform3DMakeScale(1.5,1.5,1.5)
btn.addTarget(self,action: #selector(switchDirection),for: .touchUpInside)
return btn
}()
override init(frame: CGRect) {
super.init(frame: frame)
self.layer.cornerRadius = 10
self.backgroundColor = .switchGrey
setupViews()
}
func setupViews() {
addSubview(button)
declareGestureRecognizers()
NSLayoutConstraint.activate([
button.topAnchor.constraint(equalTo: self.topAnchor,constant: 4),button.bottomAnchor.constraint(equalTo: self.bottomAnchor,constant: -4),button.widthAnchor.constraint(equalToConstant: 12),])
// Taken these constraints separately so that a reference can be maintained to these constraints and can be changed when needed
buttonLeadingConstraint = button.leadingAnchor.constraint(equalTo: self.leadingAnchor,constant: 4)
buttonLeadingConstraint.isActive = true
}
func declareGestureRecognizers() {
tapGest = UITapGestureRecognizer(target: self,action: #selector(CustomSwitch.tapped))
self.addGestureRecognizer(tapGest)
panGest = UIPanGestureRecognizer(target: self,action: #selector(CustomSwitch.panned))
button.addGestureRecognizer(panGest)
}
//MARK:- GestureRecognizers
@objc func tapped() {
switchDirection()
}
@objc func panned(_ panRecognizer: UIPanGestureRecognizer) {
let translation = panRecognizer.translation(in: self).x
switch panRecognizer.state {
case .changed:
if translation >= -13 && translation <= 13 {
if minMaxButtonConstraint + translation <= 13 {
buttonLeadingConstraint.constant = minMaxButtonConstraint + translation
}
}
case .ended:
switchDirection()
default:
print("Default")
}
}
@objc func switchDirection() {
self.layoutIfNeeded()
if isSwitched {
buttonLeadingConstraint.constant = 4
minMaxButtonConstraint = 0
self.backgroundColor = .switchGrey
isSwitched = false
}
else {
buttonLeadingConstraint.constant = 14
minMaxButtonConstraint = 14
self.backgroundColor = .custompurple
isSwitched = true
}
let switchButton = UIViewPropertyAnimator(duration: 0.4,curve: .easeInOut) {
self.layoutIfNeeded()
}
switchButton.startAnimation()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
我使用这个 customSwitch 作为组件的类基本上是一个 UITabelViewCell 类。
class SpaceDetailTableViewCell: UITableViewCell {
var typeLabel: UILabel = {
let lbl = UILabel()
lbl.translatesAutoresizingMaskIntoConstraints = false
lbl.text = "Roof Light"
lbl.font = UIFont.systemFont(ofSize: 16,weight: .medium)
return lbl
}()
-----------------------------------------------------------------------
-----How do i get tap and Pan gestures from this switchButton???------
-----------------------------------------------------------------------
var switchBtn: CustomSwitch = {
let swtch = CustomSwitch()
swtch.translatesAutoresizingMaskIntoConstraints = false
return swtch
}()
var onOffLabel: UILabel = {
let lbl = UILabel()
lbl.translatesAutoresizingMaskIntoConstraints = false
lbl.text = "Off / On"
lbl.font = UIFont.systemFont(ofSize: 14,weight: .regular)
return lbl
}()
var intensityLabel: UILabel = {
let lbl = UILabel()
lbl.translatesAutoresizingMaskIntoConstraints = false
lbl.text = "Intensity"
lbl.font = UIFont.systemFont(ofSize: 14,weight: .regular)
return lbl
}()
var imageOfDevice: UIImageView = {
let v = UIImageView()
v.translatesAutoresizingMaskIntoConstraints = false
v.contentMode = .scaleAspectFill
v.image = #imageLiteral(resourceName: "lightimage")
return v
}()
var intensityContainer: Container = {
let v = Container()
v.translatesAutoresizingMaskIntoConstraints = false
v.backgroundColor = .custompurple
v.layer.cornerRadius = 10
v.clipsToBounds = true //Because cornerRadius wasn't working
return v
}()
var percentageLabel: UILabel = {
let lbl = UILabel()
lbl.translatesAutoresizingMaskIntoConstraints = false
lbl.text = "65%"
lbl.font = UIFont.systemFont(ofSize: 16,weight: .medium)
lbl.textColor = .custompurple
return lbl
}()
var separatorLine: UIView = {
let v = UIView()
v.translatesAutoresizingMaskIntoConstraints = false
v.backgroundColor = .switchGrey
return v
}()
override init(style: UITableViewCell.CellStyle,reuseIdentifier: String?) {
super.init(style: .default,reuseIdentifier: reuseIdentifier)
setupCell()
addLinesInIntensityContainer(View: intensityContainer)
let panGest = UIPanGestureRecognizer(target: self,action: #selector(swipeupdown(_:)))
intensityContainer.addGestureRecognizer(panGest)
}
func setupCell() {
contentView.addSubview(typeLabel)
contentView.addSubview(switchBtn)
contentView.addSubview(onOffLabel)
contentView.addSubview(intensityLabel)
contentView.addSubview(imageOfDevice)
contentView.addSubview(intensityContainer)
contentView.addSubview(percentageLabel)
contentView.addSubview(separatorLine)
NSLayoutConstraint.activate([
typeLabel.leadingAnchor.constraint(equalTo: contentView.leadingAnchor,constant: 25),typeLabel.topAnchor.constraint(equalTo: contentView.topAnchor,//SwitchButton
switchBtn.trailingAnchor.constraint(equalTo: contentView.trailingAnchor,constant: -40),switchBtn.topAnchor.constraint(equalTo: typeLabel.topAnchor),switchBtn.widthAnchor.constraint(equalToConstant: 32),switchBtn.heightAnchor.constraint(equalToConstant: 20),//OnOffLabel
onOffLabel.centerXAnchor.constraint(equalTo: switchBtn.centerXAnchor),onOffLabel.topAnchor.constraint(equalTo: switchBtn.bottomAnchor,//IntensityLabel
intensityLabel.centerXAnchor.constraint(equalTo: onOffLabel.centerXAnchor),intensityLabel.topAnchor.constraint(equalTo: onOffLabel.bottomAnchor,constant: 10),//ImageView
imageOfDevice.leadingAnchor.constraint(equalTo: contentView.leadingAnchor,imageOfDevice.topAnchor.constraint(equalTo: typeLabel.bottomAnchor,imageOfDevice.widthAnchor.constraint(equalToConstant: 180),imageOfDevice.heightAnchor.constraint(equalToConstant: 215),imageOfDevice.bottomAnchor.constraint(equalTo: contentView.bottomAnchor,constant: -12),//IntensityContainer
intensityContainer.trailingAnchor.constraint(equalTo: separatorLine.trailingAnchor),intensityContainer.topAnchor.constraint(equalTo: intensityLabel.bottomAnchor,intensityContainer.widthAnchor.constraint(equalToConstant: 65),intensityContainer.heightAnchor.constraint(equalToConstant: 140),//PercentageLabel
percentageLabel.centerXAnchor.constraint(equalTo: intensityContainer.centerXAnchor),percentageLabel.topAnchor.constraint(equalTo: intensityContainer.bottomAnchor,//SeparatorLine
separatorLine.leadingAnchor.constraint(equalTo: imageOfDevice.leadingAnchor),separatorLine.trailingAnchor.constraint(equalTo: contentView.trailingAnchor,constant: -25),separatorLine.bottomAnchor.constraint(equalTo: contentView.bottomAnchor,constant: -1),separatorLine.heightAnchor.constraint(equalToConstant: 1)
])
}
@objc func swipeupdown(_ panRecognizer: UIPanGestureRecognizer) {
let translation = panRecognizer.translation(in: self).y
switch panRecognizer.state {
case .began:
intensityContainer.setNeedsdisplay()
case .changed:
if translation > 0 && translation < 140 {
Translation.translationInContainer = translation
intensityContainer.setNeedsdisplay()
}
case .ended:
Translation.translationEndedInContainer = translation
default:
print("Default")
}
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
解决方法
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