//设置介绍内容行间距
-(void)LineSpacing:(UILabel*)lab{
NSMutableAttributedString * attributedString1 = [[NSMutableAttributedString alloc] initWithString:lab.text];
NSMutableParagraphStyle * paragraphStyle1 = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle1 setLineSpacing:10];
[attributedString1 addAttribute:NSParagraphStyleAttributeName value:paragraphStyle1 range:NSMakeRange(0, [lab.text length])];
[lab setAttributedText:attributedString1];
[lab sizeToFit];
}