[cell.btnFreeBankCard addTarget:self action:@selector(unbundleBankCard:event:) forControlEvents:UIControlEventTouchUpInside];

/**
 标记标签

 @param sender 发送者
 */
- (void)unbundleBankCard:(UIButton *)sender event:(UIEvent *)event
{
    NSSet *touches = [event allTouches];
    UITouch *touch = [touches anyObject];
    CGPoint currentTouchPosition = [touch locationInView:self.tableBankCardList];
    NSIndexPath *indexPath =[self.tableBankCardList indexPathForRowAtPoint:currentTouchPosition];
  ........
   处理 按钮点击事件
}