swift cell 分割线 显示不全 自由控制长度

UIEdgeInsetsMake(_:_:_:_:)

UIEdgeInsetsZero

var bottom:
CGFloat

var left:
CGFloat

var right:
CGFloat

var top:
CGFloat

//下划线长度控制
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
if cell.responds(to: #selector(setter: UIView.layoutMargins)) {
//cell.layoutMargins = UIEdgeInsetsMake(0, 50, 0, 0)
cell.layoutMargins = UIEdgeInsets(top: 0, left: 50, bottom: 0, right: 0)
cell.layoutMargins = UIEdgeInsets.zero
}
if cell.responds(to:  #selector(setter: UITableViewCell.separatorInset)) {
cell.separatorInset = UIEdgeInsetsMake(0, 50, 0, 0)
//cell.separatorInset = UIEdgeInsets(top: 0, left: 50, bottom: 0, right: 0)
cell.separatorInset = UIEdgeInsets.zero
}
}