我有一个 UICollectionViewDataSource 定义如下。
class MyDataSource : NSObject, UICollectionViewDataSource {
var tables : [Table]?
...
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if let cell: TableCVCell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as? TableCVCell {
let row = indexPath.row
let table = tables![row]
cell.isUserInteractionEnabled = true
if table.type == "book" {
cell.actionButton.table = table
cell.actionButton.addTarget(self, action: #selector(btnClicked(sender:)), for: .touchUpInside)
}
return cell
}
return UICollectionViewCell()
}
@objc func btnClicked(sender : ActionButton) {
print("clicked")
}
}
我正在尝试为我的 actionButton 分配一个目标，但是当我点击它时没有任何反应。我确保为单元格和 actionButton 启用 isUserInteractionEnabled。
编辑:
MyDataSource 在我的 UIView 定义中使用:
class MyView: UIView {
var collectionView : UICollectionView!
let flowLayout = UICollectionViewFlowLayout()
let cvDelegate = MYDelegate()
let dataSource = MyDataSource()
override init(frame: CGRect) {
super.init(frame: frame)
setupCollectionView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupCollectionView()
}
func setupCollectionView() {
flowLayout.scrollDirection = .vertical
collectionView = UICollectionView(frame: CGRect(x: 0, y: 0, width: screenWidth, height: screenHeight), collectionViewLayout: flowLayout)
collectionView.delegate = cvDelegate
collectionView.dataSource = dataSource
collectionView.isUserInteractionEnabled = false
collectionView.register(TableCVCell.self, forCellWithReuseIdentifier: "cell")
}
最后:
MyViewController : UIViewController {
override func loadView() {
let view = MyView()
self.view = view
}
}
最佳答案
这里是UserInteractionEnabled
collectionView.delegate = cvDelegate
collectionView.dataSource = dataSource
collectionView.isUserInteractionEnabled = false
应为 true 或将其删除，因为默认情况下为 true
collectionView.isUserInteractionEnabled = true
关于ios - UIButton 上的 AddTarget 未触发，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55668766/