iOS版本号，build号获取，根据字符串格式长短动态计算uilabel的size等

 获得version版本号

[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];

[[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString”];

<span style="font-family: HannotateSC-W5;">获得build号</span>

[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"];

//比较两个日期的大小，只比较到具体的某一天

-(NSComparisonResult)compareDay:(NSDate *)oneDay anotherDay:(NSDate *)anotherDay{

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

    [dateFormatter setDateFormat:@"dd-MM-yyyy"];

    NSString *oneDayStr = [dateFormatter stringFromDate:oneDay];

    NSString *anotherDayStr = [dateFormatter stringFromDate:anotherDay];

    NSDate *dateA = [dateFormatter dateFromString:oneDayStr];

    NSDate *dateB = [dateFormatter dateFromString:anotherDayStr];

    NSComparisonResult result = [dateA compare:dateB];

    return result;

}

使用时[selfcompareDay:dateanotherDay:currentDay]==NSOrderedAscending 表示curentDay大于date

/*根据字符串的格式计算uilabel的宽高

*str —— 要计算size的字符串

*space —— 行间距

*strFont —— 字体

*maxSize —— 字符串允许的最大的宽高size

*/

-(CGSize)countStrSize:(NSString *)str lineSpace:(float)space font:(UIFont *)strFont maxSize:(CGSize)maxSize{

    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc]init];

    if (str) {

        attributedString = [[NSMutableAttributedString alloc] initWithString:str];

    }

    //maxSize 如CGSizeMake(320 - xybImgLeftMargin*3-imgViewWidth, MAXFLOAT)    

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

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

    NSDictionary *attributes = @{NSFontAttributeName: [UIFont systemFontOfSize:15],NSParagraphStyleAttributeName:paragraphStyle};

    [attributedString addAttributes:attributes range:NSMakeRange(0, [str length])];

    CGRect detailFrame =[attributedString boundingRectWithSize:maxSize 

    options:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading context:nil];

    CGSize detailSize = detailFrame.size;

    //textLabel.attributedText = attributedString;

    return detailSize;

}