NSString *hintStr = @"输入材料标题搜索材料\n注:可根据材料序号直接搜索, 如TPO23";
CGSize size = [toolset returnTextStringSizeWithString:hintStr withBoundSize:CGSizeMake(Main_Screen_Width - 72, MAXFLOAT) withFont:FZHei(15)];
self.mHintLabelLayoutH.constant = size.height + 20;
[self.mHitLabel setNeedsLayout];
NSMutableAttributedString *prefixAttr = [[NSMutableAttributedString alloc] initWithString:hintStr];
[prefixAttr addAttribute:NSFontAttributeName value:FZHei(17) range:NSMakeRange(0, hintStr.length)];
[prefixAttr addAttribute:NSForegroundColorAttributeName value:ColorHui range:NSMakeRange(0, hintStr.length)];
[prefixAttr addAttribute:NSForegroundColorAttributeName value:HexRGB(0xc0c0c0) range:NSMakeRange(11, 21)];
[prefixAttr addAttribute:NSFontAttributeName value:FZHei(13) range:NSMakeRange(11, 21)];
NSMutableParagraphStyle *paragraphString = [[NSMutableParagraphStyle alloc] init];
[paragraphString setLineSpacing:8]; //设置行间距
[prefixAttr addAttribute:NSParagraphStyleAttributeName value:paragraphString range:NSMakeRange(0, hintStr.length)];
self.mHitLabel.attributedText = prefixAttr;