Question

我在Cell中有一个收藏夹按钮。我已根据此收藏夹按钮DAVMEDIAfileId定义了不同的图像。如果选择“收藏夹”，否则选择。但是目前，DAVMEDIAfileId数组中的所有值都是true或false。我只希望它更改一个值。由于所有这些都改变了，所以它不起作用。我只希望fav按钮更改所选DAVMEDIAfileId [indexPath.row]

的值

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

    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "davetiyeGosterCell", for: indexPath) as! davetiyeCell
    cell.favCell.isSelected = !cell.favCell.isSelected
    let key = "\(DAVMEDIAfileId[indexPath.row])"
    let userDefault = UserDefaults.standard
    userDefault.set(cell.favCell.isSelected, forKey: key)
    userDefault.synchronize()

    let keygetir = UserDefaults.standard.bool(forKey: "\(DAVMEDIAfileId[indexPath.row])")

    if keygetir == true {
                cell.favCell.setImage(UIImage(named: "heart"), for: .normal)
                cell.favCell.setImageTintColor(UIColor.black)
                cell.favCell.setImage(UIImage(named: "heart"), for: .selected)
                cell.favCell.setImageTintColor(UIColor.red)
    }

    if keygetir == false {
                cell.favCell.setImage(UIImage(named: "heart"), for: .normal)
                cell.favCell.setImageTintColor(UIColor.red)
                cell.favCell.setImage(UIImage(named: "heart"), for: .selected)
                cell.favCell.setImageTintColor(UIColor.black)
    }
 }

Answer 1

您可以尝试以下方法：

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

    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "davetiyeGosterCell", for: indexPath) as! davetiyeCell
    let selected = UserDefaults.standard.bool(forKey: "keyIndex_\(DAVMEDIAfileId[indexPath.row])")
    cell.favCell.isSelected =  selected
    cell.favCell.setImage(UIImage(named: "heart"), for: .normal) // I think, you should use empty heart
    cell.favCell.setImage(UIImage(named: "heart"), for: .selected)
    cell.favCell.tintColor = selected ? .red : .black

    return cell
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "davetiyeGosterCell", for: indexPath) as! davetiyeCell
    let selected = !UserDefaults.standard.bool(forKey: "keyIndex_\(DAVMEDIAfileId[indexPath.row])")
    cell.favCell.isSelected =  selected
    cell.favCell.tintColor = selected ? .red : .black

    let userDefault = UserDefaults.standard
    userDefault.set(selected, forKey: "keyIndex_\(DAVMEDIAfileId[indexPath.row])")
    userDefault.synchronize()
}

收藏夹中的收藏夹按钮

1 个答案: