关于tableviewcell 点击时改变的各种问题，求大神，要哭了

for (UIView *view in cell.contentView.subviews) {

    [view removeFromSuperview]; 

} 

if(_current == indexPath.row) {

    cell.textLabel.text = @"中国国足"; 

    CGRect rect = cell.frame; 

    rect.origin.y +=20; 

    UILabel *label =  [[UILabel alloc]initWithFrame:rect]; 

    label.text=@"hello"; 

    [cell addSubview:label]; 

     cell.contentView.backgroundColor = [UIColor redColor]; 

}else{ 

    cell.textLabel.text = @"进球了"; 

}