现在我有一个滚动用户名列表,使用按钮的集合视图。但我想为每一行添加重叠的删除按钮。它们需要附加到名称按钮并随之滚动。
如何将这些按钮添加到我的CollectionView? (我还想跳过第一行的删除按钮,原因很明显)
当前代码:
//Add the cells to collection
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell: UsernameCollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as! UsernameCollectionViewCell
cell.usernameLabel.text = userNames [indexPath.row]
return cell
}
//Upon Selecting an item
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
if (indexPath.row == 0){
self.performSegueWithIdentifier("newUserSegue", sender: self)
}
else {
sendData(userNames[indexPath.row])
self.dismissViewControllerAnimated(true, completion: nil)
}
}
答案 0 :(得分:14)
搞定了!以下是:
编辑视图控制器代码:
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell: UsernameCollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as! UsernameCollectionViewCell
cell.usernameLabel.text = userNames [indexPath.row]
cell.deleteButton?.layer.setValue(indexPath.row, forKey: "index")
cell.deleteButton?.addTarget(self, action: "deleteUser:", forControlEvents: UIControlEvents.TouchUpInside)
// Remove the button from the first cell
if (indexPath.row == 0){
var close : UIButton = cell.viewWithTag(11) as! UIButton
close.hidden = true
}
return cell
}
func deleteUser(sender:UIButton) {
let i : Int = (sender.layer.valueForKey("index")) as! Int
userNames.removeAtIndex(i)
UserSelectCollection.reloadData()
}
非常感谢JigarM在GitHub上的例子: https://github.com/JigarM/UICollectionView-Swift
答案 1 :(得分:1)
为什么不在IB中创建自定义UICollectionViewCell并只添加按钮呢? 将其注册到您的collectionView:
- registerNib:forCellReuseIdentifier:
您可以使用委托或通知来处理按钮点击。