UILabel部分字体高亮突出强调;计算label.text宽高度

UIlabel字段部分字体高亮突出显示，如下图：

    NSString *str = @"芝麻信用高于650的用户,租赁商品将享受部分免押金特权";
    NSMutableAttributedString *attributedStr = [[NSMutableAttributedString alloc]initWithString:str];
    [attributedStr addAttribute:NSForegroundColorAttributeName value:kColor(@"#2196F3") range:NSMakeRange(6, 3)];
    [attributedStr addAttribute:NSForegroundColorAttributeName value:kColor(@"#2196F3") range:NSMakeRange(22, 5)];
    _detalTextLabel.attributedText = attributedStr;
    [self.View addSubview:_detalTextLabel];

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计算文字宽度

- (CGFloat)calculateRowWidth:(NSString *)string Height:(CGFloat)textHeight  fontSize:(NSInteger) fontSize{  
    NSDictionary *dic = @{NSFontAttributeName:[UIFont systemFontOfSize: fontSize]};  //指定字号  
    CGRect rect = [string boundingRectWithSize:CGSizeMake(0, textHeight)/*计算宽度时要确定高度*/ options:NSStringDrawingUsesLineFragmentOrigin |  
                   NSStringDrawingUsesFontLeading attributes:dic context:nil];  
    return rect.size.width;  
}  

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计算文字高度

- (CGFloat)calculateRowHeight:(NSString *)string Width:(CGFloat)textWidth fontSize:(NSInteger)fontSize{  
    NSDictionary *dic = @{NSFontAttributeName:[UIFont systemFontOfSize:fontSize]};//指定字号  
    CGRect rect = [string boundingRectWithSize:CGSizeMake(textWidth, 0)/*计算高度要先指定宽度*/ options:NSStringDrawingUsesLineFragmentOrigin |  
                   NSStringDrawingUsesFontLeading attributes:dic context:nil];  
    return rect.size.height;  
}