知识片段---label行间距设置

//设置行间距
    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc]init];
    paragraphStyle.lineSpacing = 8;
    NSDictionary *attributes = @{ NSFontAttributeName:[UIFont systemFontOfSize:14], NSParagraphStyleAttributeName:paragraphStyle};

    self.describe.attributedText = [[NSAttributedString alloc]initWithString:homePageModel.des attributes:attributes];