动态更改包含集合视图的单元格的高度

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    // 根据indexPath获取对应的数据
    let data = dataSource[indexPath.item]
    
    // 根据数据计算单元格的高度
    let height = calculateHeight(for: data)
    
    // 返回计算得到的高度
    return CGSize(width: collectionView.bounds.width, height: height)
}

func calculateHeight(for data: MyData) -> CGFloat {
    let text = data.text
    let font = UIFont.systemFont(ofSize: 14)
    let maxSize = CGSize(width: collectionView.bounds.width - 16, height: .greatestFiniteMagnitude)
    let options = NSStringDrawingOptions.usesFontLeading.union(.usesLineFragmentOrigin)
    let attributes = [NSAttributedString.Key.font: font]
    let boundingRect = text.boundingRect(with: maxSize, options: options, attributes: attributes, context: nil)
    
    return ceil(boundingRect.height) + 16
}