swift - Tableview 单元格阴影无法正确呈现 Swift

Question

我已经能够使用以下代码将阴影添加到我的 tableview 单元格的底部，但是它似乎在之后消失了我向下滚动。

cell.layer.shadowColor = UIColor.blackColor().CGColor
cell.layer.shadowOffset = CGSizeMake(0,2)
cell.layer.shadowRadius = 3
cell.layer.shadowOpacity = 0.5
let shadowFrame: CGRect = cell.layer.bounds
let shadowPath: CGPathRef = UIBezierPath(rect: shadowFrame).CGPath
cell.layer.shadowPath = shadowPath
cell.layer.masksToBounds = false

enter image description here

Answer 1

问题与阴影偏移有关，我已设法通过以下方式纠正:

func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {

    cell.layer.backgroundColor = UIColor.clearColor().CGColor
    cell.layer.shadowColor = UIColor.blackColor().CGColor
    cell.layer.shadowOffset = CGSizeZero
    cell.layer.shadowRadius = 4
    cell.layer.shadowOpacity = 0.5
    cell.layer.shadowPath = UIBezierPath(rect: cell.bounds).CGPath
    cell.layer.masksToBounds = false

}