如何从集合视图中删除单元格？

Question

我想从UICollectionview删除单元格，当用户touchUpInside（Button）删除单元格时。

这里是我的代码：

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 

    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath as IndexPath) as! CollectionViewCell 

    cell.myLabel.text = self.items[indexPath.row] 

    cell.deleteBtn?.layer.setValue(indexPath.row, forKey: "Cdelete") 
    cell.deleteBtn?.addTarget(self, action: Selector(("deleteColor:")), for: UIControlEvents.touchUpInside) 


    cell.backgroundColor = UIColor.cyan // make cell more visible in our example project 

    return cell 
} 

func deleteColor(sender:UIButton) { 

    let i : Int = (sender.layer.value(forKey: "Cdelete")) as! Int 
    self.items.remove(at: i) 
    collectionView.reloadData() 
} 

我哪里做错了吗？您deletebutton用于获取当前单元格

Answer 1

组标签/知道你挖

cell.deleteBtn?.tag = indexPath.row 
cell.deleteBtn?.addTarget(self, action: #selector(yourVCName. deleteColor(_:)), for: .touchUpInside) 

在哪个小区，并呼吁像

@IBAction func deleteColor(_ sender: UIButton){ 
    print("Button pressed ") 
    // continue your work 
    let i : Int = (sender.layer.value(forKey: "Cdelete")) as! Int 
self.items.remove(at: i) 
collectionView.reloadData() 

}