单元格选择的背景颜色可以通过界面构建器中的Storyboard设置:

override func setSelected(selected: Bool, animated: Bool) {
    // Configure the view for the selected state

    super.setSelected(selected, animated: animated)
    let selView = UIView()

    selView.backgroundColor = UIColor( red: 5/255, green: 159/255, blue:223/255, alpha: 1.0 )
    self.selectedBackgroundView = selView
}

使用[cell setClipsToBounds:YES];对于分组样式单元格

对于Swift 3.0:

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    let cell = super.tableView(tableView, cellForRowAt: indexPath)

    cell.contentView.backgroundColor = UIColor.red
}

我使用下面的方法，对我来说很好，

class MyTableViewCell : UITableViewCell {

                var defaultStateColor:UIColor?
                var hitStateColor:UIColor?

                 override func awakeFromNib(){
                     super.awakeFromNib()
                     self.selectionStyle = .None
                 }

// if you are overriding init you should set selectionStyle = .None

                override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
                    if let hitColor = hitStateColor {
                        self.contentView.backgroundColor = hitColor
                    }
                }

                override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
                    if let defaultColor = defaultStateColor {
                        self.contentView.backgroundColor = defaultColor
                    }
                }

                override func touchesCancelled(touches: Set<UITouch>?, withEvent event: UIEvent?) {
                    if let defaultColor = defaultStateColor {
                        self.contentView.backgroundColor = defaultColor
                    }
                }
            }

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
    UIView *view = [[UIView alloc] init];
    [view setBackgroundColor:[UIColor redColor]];
    [cell setSelectedBackgroundView:view];
}

我们需要在这个方法中设置所选的背景视图。