+(CGSize)labSizeWithStr:(NSString *)_str font:(UIFont *)_font labWidth:(int)_labWidth lineSpacing:(int)_lineSpacing numberOfLines:(int)_numberOfLines{

    if (!_str) {

        return CGSizeZero;

    }

    UILabel *cLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, _labWidth, 0)];

    [cLabel setFont:_font];

    [cLabel setNumberOfLines:_numberOfLines];

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

    [paragraphStyle setLineSpacing:_lineSpacing];

    [cLabel setAttributedText:[[NSAttributedString alloc] initWithString:_str attributes:@{NSParagraphStyleAttributeName:paragraphStyle}]];

    [cLabel sizeToFit];

    CGSize returnSize = cLabel.size;

    cLabel = nil;

    return returnSize;

}