设置label的富文本的属性

- (void)setStatus:(GJCommodityHeaderViewItem *)status
{
    _status = status;
    if (!status) return;
    //设置商品图片
        [self.imageView sd_setImageWithURL:[NSURL URLWithString:status.bannerImage]];
    //设置格格家小图片
        [self.iconImageView sd_setImageWithURL:[NSURL URLWithString:status.gegeImage]];
    //设置label
        NSString *say = @"格格说:";
        NSMutableDictionary *dict = [NSMutableDictionary dictionary];
        dict[NSForegroundColorAttributeName] = [UIColor redColor];
        dict[NSFontAttributeName] = [UIFont systemFontOfSize:16];
        self.gegeSayLabel.text = [say stringByAppendingString:status.gegeSay];
        NSMutableAttributedString *atrStr = [[NSMutableAttributedString alloc] initWithString:self.gegeSayLabel.text];
       [atrStr addAttributes:dict range:NSMakeRange(0, 4)];
//设置了label的attributedText属性后,用xib描述的当前label就不能按照文本的多少自动换行了,需要手动设置label的高度才能实现自动换行    
   self.gegeSayLabel.attributedText = atrStr;


}