iOS UILabel 设置行高

UILabel *tileLabel = [[UILabel alloc] init];

    tileLabel.numberOfLines = 0;

    tileLabel.backgroundColor = [UIColor clearColor];

    tileLabel.text = @"调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头调整行间距云头";

    tileLabel.font = [UIFont systemFontOfSize:11.0f];

    tileLabel.textColor = [Tools colorWithHex:0x787878];

    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:tileLabel.text];

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

    [paragraphStyle setLineSpacing:18];//调整行间距

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

    tileLabel.attributedText = attributedString;

    NSDictionary *attributes = @{NSFontAttributeName:tileLabel.font, NSParagraphStyleAttributeName:paragraphStyle.copy};

    CGFloat height = [tileLabel.text boundingRectWithSize:CGSizeMake(self.view.width-32, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:attributes context:nil].size.height ;

//    CGFloat height =[self changeStationWidth:tileLabel.text anWidthTxtt:self.view.width-32 anfont:11];

    tileLabel.frame = CGRectMake(16, 0, self.view.width-32, height);

    [self.view addSubview:tileLabel];