当我以编程方式将按钮添加到自定义UICollectionViewCell类时,该按钮不可单击,并且不会运行附加到该按钮的功能。
到目前为止,我已经尝试过这些:
但没有任何运气。
在我的班级里,我有:
let toggleButton: UIButton = {
let tb = UIButton(type: .custom) as UIButton
tb.setTitleColor(.white, for: .normal)
tb.setTitle("Example", for: .normal)
tb.titleLabel?.font = UIFont.customFont(name: "InterUI-Medium", size: 18)
tb.backgroundColor = UIColor(red:0.36, green:0.69, blue:0.55, alpha:1.0)
tb.layer.cornerRadius = 5
tb.titleLabel?.adjustsFontSizeToFitWidth = true
tb.titleLabel?.minimumScaleFactor = 0.4
tb.translatesAutoresizingMaskIntoConstraints = false
tb.addTarget(self, action: #selector(topButtonTouched), for: .touchUpInside)
return tb
}()
和
func setupView() {
self.addSubview(toggleButton)
let menuAndToggleConstraints = [
toggleButton.centerYAnchor.constraint(equalTo: self.centerYAnchor),
toggleButton.trailingAnchor.constraint(equalTo: self.trailingAnchor, constant: -100,
toggleButton.widthAnchor.constraint(equalToConstant: 150)
]
NSLayoutConstraint.activate(menuAndToggleConstraints)
}
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
在单元格中设置按钮。我尝试了self.isUserInteractionEnabled来查看是否存在任何冲突,但是它不能解决任何问题。我在该单元格中还有一个手势识别器,并且尝试了没有它的情况,并且该按钮仍然无法单击。
编辑: 这是我的委托和我的函数,该函数调用collectionView来更改indexPath的大小:
weak var delegate: ExpandedCellDelegate?
public var indexPath: IndexPath!
@objc func topButtonTouched(_ sender: UIButton) {
print("hello")
if let delegate = self.delegate{
delegate.topButtonTouched(indexPath: indexPath)
}
}
我确保在this answer中演示了如何在CollectionView类的cellForRow函数中将委托和indexPath设置为self。
答案 0 :(得分:0)
我可以通过以下操作使按钮起作用:
tb.addTarget(self, action: #selector(topButtonTouched), for: .touchUpInside)
像这样进入setupView()方法:
func setupView() {
self.addSubview(toggleButton)
toggleButton.addTarget(self, action: #selector(topButtonTouched), for: .touchUpInside)
let menuAndToggleConstraints = [
toggleButton.centerYAnchor.constraint(equalTo: self.centerYAnchor),
toggleButton.trailingAnchor.constraint(equalTo: self.trailingAnchor, constant: -100,
toggleButton.widthAnchor.constraint(equalToConstant: 150)
]
NSLayoutConstraint.activate(menuAndToggleConstraints)
}
不确定是否正确,但是可以。