为CollectionView的单独单元格设置圆形标签[Swift]

// 自定义CollectionViewCell类
class CustomCollectionViewCell: UICollectionViewCell {
    var circularLabel: UILabel!
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        // 创建圆形标签视图
        circularLabel = UILabel(frame: CGRect(x: 0, y: 0, width: frame.width, height: frame.height))
        circularLabel.textAlignment = .center
        circularLabel.textColor = .white
        circularLabel.backgroundColor = .blue
        circularLabel.layer.cornerRadius = frame.width / 2
        circularLabel.clipsToBounds = true
        
        // 将圆形标签视图添加到单元格中
        contentView.addSubview(circularLabel)
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

// 在CollectionView的数据源方法中注册自定义的CollectionViewCell类
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CustomCell", for: indexPath) as! CustomCollectionViewCell
    
    // 设置圆形标签视图的文本内容
    cell.circularLabel.text = "标签"
    
    return cell
}