ios - 如何在 swift iOS 中更改自定义 Collection View 单元格的背景颜色？

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

    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! PlaceCollectionViewCell

    //let imageView = UIImageView()
    //cell.backgroundColor = UIColor(colorLiteralRed: 0.278, green: 0.694, blue: 0.537, alpha: 1.00)

    cell.layer.borderWidth = 0.5
    cell.layer.borderColor = UIColor(colorLiteralRed: 0.278, green: 0.694, blue: 0.537, alpha: 1.00).cgColor

   //cell.placeLabel.tintColor = UIColor(colorLiteralRed: 0.278, green: 0.694, blue: 0.537, alpha: 1.00).cgColor

    cell.layer.cornerRadius = 40
    cell.layer.masksToBounds = true

    print("places\(indexPath.row)")
    //cell.placeLabel.text = places[indexPath.row] as! String
    cell.placeLabel.text = places[indexPath.row]
    cell.placeLabel.textColor = UIColor(colorLiteralRed: 0.278, green: 0.694, blue: 0.537, alpha: 1.00)

    return cell
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {

    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! PlaceCollectionViewCell

    if (indexPath.row == 0){

        cell.backgroundColor = UIColor(colorLiteralRed: 0.278, green: 0.694, blue: 0.537, alpha: 1.00)

    }
}

我创建了一个自定义 collectionViewCell。当我单击其中一个单元格时，它的 backgroundColor 应该会改变。我怎样才能做到这一点？

我已经在 didSelectItemItamAt indexpath 方法中尝试过，但它不起作用。请帮忙。

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Best Answer-推荐答案

您可以使用 selectedBackgroundView UICollectionViewCell 的属性，在 cellForItemAt indexPath 内设置该属性，现在当您选择单元格时，它将自动更改该单元格的 backgroundColor。

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
     let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! PlaceCollectionViewCell
     //Your other code

     //Add code to set selectedBackgroundView property
     let view = UIView(frame: cell.bounds)
     // Set background color that you want
     view.backgroundColor = UIColor(colorLiteralRed: 0.278, green: 0.694, blue: 0.537, alpha: 1.00) 
     cell.selectedBackgroundView = view
     return cell
}

现在使用它不需要更改 didSelectItemAt indexPath 中单元格的 backgroundColor 它将自动工作并更改该选定单元格的 backgroundColor .

关于ios - 如何在 swift iOS 中更改自定义 Collection View 单元格的背景颜色？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41157918/