设置UILabel的行间距

NSString *textStr = @"我是中国人我来大家来看啊大家块钱哦呢啊分开了撒酒疯撒撒两放假拉屎在。，厦门 vv撒了见风使舵。";

    UILabel *openMicPrivilegeTipsLabel = [[UILabel alloc] initWithFrame:CGRectMake(starX + 10, starY, textSize.width, textSize.height)];

    openMicPrivilegeTipsLabel.text = textStr;

    openMicPrivilegeTipsLabel.textColor = [UIColor whiteColor];

    openMicPrivilegeTipsLabel.font = Font13;

    openMicPrivilegeTipsLabel.numberOfLines = 0;

    

    // 调整行间距

    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:textStr];

    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];

    [paragraphStyle setLineSpacing:6];

    [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [textStr length])];

    openMicPrivilegeTipsLabel.attributedText = attributedString;

    [topView addSubview:openMicPrivilegeTipsLabel];

    [openMicPrivilegeTipsLabel sizeToFit];