点击cell时有背景颜色的控件点击后会闪下

问题描述：原来cell上控件 有背景色。一点击后，控件的背景色就没了。整个控件就像短暂消失了一样。 以label为示例：

解决办法：

在自定义cell的时候,在这两个方法里面都设置上该控件的原来设定的背景色即可，记得先调用父类的方法。

• (void)setSelected:(BOOL)selected animated:(BOOL)animated

• (void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated

代码示例（Objective-C）:

• (void)setSelected:(BOOL)selected animated:(BOOL)animated {

  UIColor *originColor = label.backgroundColor;

  [super setSelected:selected animated:animated];

  label.backgroundColor = originColor;

}

• (void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated {

  UIColor *originColor = label.backgroundColor;

  [super setHighlighted:highlighted animated:animated];

  label.backgroundColor = originColor;

}

代码示例（swift）：

import UIKit

class MyBidsTableViewCell: UITableViewCell {

override func setSelected(selected: Bool, animated: Bool) {

    let originColor = label.backgroundColor

    super.setSelected(selected, animated: animated)

    label.backgroundColor = originColor

}

override func setHighlighted(highlighted: Bool, animated: Bool) {

    let originColor = label.backgroundColor

    super.setHighlighted(highlighted, animated: animated)

    label.backgroundColor = originColor

}

}