【整理】OC中常用的关于时间格式的转换

3 月，跳不动了？>>>

代码可能有点乱 不过应该不影响使用  这些应该基本上能满足大部分用户对于时间的处理需求

DateTimeHelper.h文件

#import <Foundation/Foundation.h>

@interface DateTimeHelper : NSObject

//时间戳转化成字符串格式日期 YYYY-MM-dd HH:mm
+(NSString*)dateTimeFromTimesp:(double)timeStamp;

//时间戳转化成字符串格式日期 YYYY-MM-dd HH:mm:ss
+(NSString*)dateTimeFromTimesp1:(double)timeStamp;

//时间戳转化成字符串格式日期 YYYY-MM-dd
+(NSString*)dateTimeFromTimespEx:(double)timeStamp;

//时间戳转化成字符串格式日期 YYYY年MM月dd日 ss时mm分
+(NSString*)dateTimeFromTimespNYR:(double)timeStamp;

//将时间戳转化成double
+(double)dateToTimesp:(NSDate*)aDate;

//获取当前日期是 几号
+(NSString*)currentDay;

//相对时间 N年N月N日后的日期     -数可以表示n年前的日期
+ (NSString *)relativeTime:(NSString *)dateStr years:(NSInteger)years month:(NSInteger)month day:(NSInteger)day;

//将秒处理成格式化的时间
+ (NSString *)getDateFormatWithStringSeconds:(NSString *)timerStr;

//获取当前系统时间格式化 参数为一个格式YYYY-MM-dd HH:mm:ss;  返回的格式和这个保持一致
+(NSString*)getCurrentSystemTime:(NSString*)formart;

//获取当前网络时间时间(中国)并转换成年月日分开 返回只根据需要自己修改
+(NSString*)getTimeSegment;

//将时间格式格式化成字符串《=》nsdate 转换成需要的string
+(NSString *)getStringFromDate:(NSDate*)inputDate format:(NSString *)format;

+ (NSTimeInterval)getDateWithReferenceRetureIntervalFrom1970:(NSString *)reference format:(NSString *)format;

//传入一个格式化过得字符串 返回与当前时间的间隔（ 秒）  reference 为  时间字符串 参数为一个reference字符串的 格式根据需要自己填写（YYYY-MM-dd HH:mm:ss）;
+ (NSTimeInterval)getDateWithReferenceRetureIntervalToNow:(NSString *)reference format:(NSString *)format;

//返回一个 NSTimeInterval 秒计算    刚刚   1分钟前 还是一周前..
+(NSString *)getTimeString:(NSTimeInterval)time;

@end

 

 

 

DateTimeHelper.m文件

#import "DateTimeHelper.h"

#define vision [[[UIDevice currentDevice]systemVersion] integerValue]<8.0

@implementation DateTimeHelper

//时间戳转化成字符串格式日期
+(NSString*)dateTimeFromTimesp:(double)timeStamp
{
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:@"yyyy-MM-dd HH:mm"]; // ----------设置你想要的格式,hh与HH的区别:分别表示12小时制,24小时制
    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timeStamp];
    NSString *confromTimespStr = [formatter stringFromDate:confromTimesp];
    return confromTimespStr;
}
+(NSString*)dateTimeFromTimesp1:(double)timeStamp
{
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; // ----------设置你想要的格式,hh与HH的区别:分别表示12小时制,24小时制
    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timeStamp];
    NSString *confromTimespStr = [formatter stringFromDate:confromTimesp];
    return confromTimespStr;
}
//时间戳转化成字符串格式日期 YYYY-MM-dd
+(NSString*)dateTimeFromTimespEx:(double)timeStamp
{
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:@"yyyy-MM-dd"]; // ----------设置你想要的格式,hh与HH的区别:分别表示12小时制,24小时制
    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timeStamp];
    NSString *confromTimespStr = [formatter stringFromDate:confromTimesp];
    return confromTimespStr;
}

//时间戳转化成字符串格式日期 YYYY年MM月dd日 ss时mm分
+(NSString*)dateTimeFromTimespNYR:(double)timeStamp
{
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:@"yyyy年MM月dd 23时59分"]; // ----------设置你想要的格式,hh与HH的区别:分别表示12小时制,24小时制
    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timeStamp];
    NSString *confromTimespStr = [formatter stringFromDate:confromTimesp];
    return confromTimespStr;
}

+(double)dateToTimesp:(NSDate*)aDate
{
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:@"yyyy-MM-dd"];
    return [aDate timeIntervalSince1970];
//    时间转时间戳的方法:
//    NSString *timeSp = [NSString stringWithFormat:@"%ld", (long)[aDate timeIntervalSince1970]];
}

//获取当前日期是 几号
+(NSString*)currentDay
{
    //获取当前时间
    NSDate *now = [NSDate date];
  //  NSLog(@"now date is: %@", now);
    
    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
    NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:now];
    int day = (int)[dateComponent day];
    return [NSString stringWithFormat:@"%d", day];
//    int year = [dateComponent year];
//    int month = [dateComponent month];
//    int hour = [dateComponent hour];
//    int minute = [dateComponent minute];
//    int second = [dateComponent second];
}
//相对时间 N年N月N日后的日期     -数可以表示n年前的日期
+ (NSString *)relativeTime:(NSString *)dateStr years:(NSInteger)years month:(NSInteger)month day:(NSInteger)day{
    
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
    NSDate *date1 = [dateFormatter dateFromString:dateStr];
    NSLog(@"%@", date1);
    
    NSDateComponents * components = [[NSDateComponents alloc] init];
    components.year = years;
    components.month = month;
    components.day = day;
    NSCalendar * calendar = [NSCalendar currentCalendar];
    
    //NSDate * currentDate = [NSDate date];
    NSDate * nextData = [calendar dateByAddingComponents:components toDate:date1 options:NSCalendarMatchStrictly];
    NSDateFormatter * formatter = [[NSDateFormatter alloc] init];
    
    formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";
    NSString * str = [formatter stringFromDate:nextData];
    NSLog(@"%@",str);
    return str;
}

//将字符串秒处理成格式化的时间
+ (NSString *)getDateFormatWithStringSeconds:(NSString *)timerStr {
    //转化为Double
    double t = [timerStr doubleValue];
    //计算出距离1970的NSDatereference
    NSDate *date = [NSDate dateWithTimeIntervalSince1970:t];
    //转化为 时间格式化字符串
    NSDateFormatter *df = [[NSDateFormatter alloc] init];
    df.dateFormat = @"yyyy-MM-dd HH:mm:ss";
    //转化为 时间字符串
    return [df stringFromDate:date];
}

//获取当前系统时间格式化过得
+(NSString*)getCurrentSystemTime:(NSString *)formart{
    
        NSDate * senddate=[NSDate date];
        NSDateFormatter *dateformatter=[[NSDateFormatter alloc] init];
    if(formart.length==0||formart==nil){
        [dateformatter setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
    }else{
        [dateformatter setDateFormat:formart];
    }
    NSString * locationString=[dateformatter stringFromDate:senddate];
    //  NSLog(@"locationString:%@",locationString);
    return locationString;
}

//获取当前时间并转换成年月日分开
+(NSArray*)getTimeSegment{

        NSCalendar *calendar=nil;
        NSInteger unitFlags=0;
//        if(vision){
//            calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
//    
//            NSInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekdayCalendarUnit |
//    
//            NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
//        }else{
            calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
    
            unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitWeekday |
            NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
        //}
        NSDate *now=[NSDate date];
        NSDateComponents *comps = [[NSDateComponents alloc] init];
        comps = [calendar components:unitFlags fromDate:now];
        NSInteger year=[comps year];
        NSInteger month = [comps month];
        NSInteger day = [comps day];
        NSInteger hour = [comps hour];
        NSInteger min = [comps minute];
        NSInteger sec = [comps second];
        //返回的 数组
        NSArray *ary=@[@(year),@(month),@(day),@(hour),@(min),@(sec)];
       // NSLog(@"--%ld-%ld-%ld %ld:%ld:%ld",year,month,day,hour,min,sec);
        // return [NSString stringWithFormat:@"%ld-%ld-%ld %ld:%ld:%ld",year,month,day,hour,min,sec];
    return ary;
}
 //将时间格式格式化成字符串
+(NSString *)getStringFromDate:(NSDate*)inputDate format:(NSString *)format{
        NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init];
       // [outputFormatter setLocale:[NSLocale currentLocale]];
        [outputFormatter setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"]];
        if(format.length==0||format==nil){
            [outputFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
        }else{
            [outputFormatter setDateFormat:format];
        }
        [outputFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
        NSString *str = [outputFormatter stringFromDate:inputDate];
        //NSLog(@"testDate:%@", str);
      return str;
}

////传入一个格式化过得字符串 返回  一个时间字符串与1970年的（ 秒）
+ (NSTimeInterval)getDateWithReferenceRetureIntervalFrom1970:(NSString *)reference format:(NSString *)format{
    //将字符串转换成时间格式 一下获取的全部是北京时间
    NSDateFormatter *inputFormatter = [[NSDateFormatter alloc] init];
    [inputFormatter setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"]];
    if(format.length==0||format==nil){
        [inputFormatter setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
    }else{
        [inputFormatter setDateFormat:format];
    }
    //[inputFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss.0"];
    NSDate* inputDate = [inputFormatter dateFromString:reference];
    // NSLog(@"date = %@",inputDate);
    
    //获取两个时间之间的间隔
    //NSDate *now=[NSDate date];
    NSTimeInterval secondsBetweenDates=[inputDate timeIntervalSince1970];
    //[now timeIntervalSinceDate:inputDate];
     //NSLog(@"秒=  %lf",secondsBetweenDates);
    return secondsBetweenDates;
}

//传入一个格式化过得字符串 返回   一个时间字符串与当前时间的间隔（ 秒）
+ (NSTimeInterval)getDateWithReferenceRetureIntervalToNow:(NSString *)reference format:(NSString *)format{
    //将字符串转换成时间格式 一下获取的全部是北京时间
    /*
     传入的时间字符串 20150208010203  则[inputFormatter setDateFormat:@"yyyyMMddHHmmss"];
     传入的时间字符串 2015-02-08 01:02:03  则[inputFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
     */
    NSDateFormatter *inputFormatter = [[NSDateFormatter alloc] init];
    [inputFormatter setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"]];
    if(format.length==0||format==nil){
        [inputFormatter setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
    }else{
        [inputFormatter setDateFormat:format];
    }
  //  [inputFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss.0"];
    NSDate* inputDate = [inputFormatter dateFromString:reference];
    // NSLog(@"date = %@",inputDate);
    
    //获取两个时间之间的间隔
    NSDate *now=[NSDate date];
    NSTimeInterval secondsBetweenDates= [now timeIntervalSinceDate:inputDate];
   // NSLog(@"secondsBetweenDates=  %lf",secondsBetweenDates);
    return secondsBetweenDates;
}
//返回一个字符串 刚刚   1分钟前 ...
+(NSString *)getTimeString:(NSTimeInterval)segmentTime{
    NSInteger allTime=segmentTime;
    
    NSInteger year=60*60*24*365;
    NSInteger month = 60*60*24*30;
    NSInteger day = 60*60*24;
    NSInteger hour = 60*60;
    NSInteger min = 60;
    NSString *str=nil;
    if (allTime<min) {
        str=[NSString stringWithFormat:@"刚刚"];
       
    }else if (allTime<hour){
        str=[NSString stringWithFormat:@"%ld分之前",allTime/min];

    }else if (allTime<day){
        str=[NSString stringWithFormat:@"%ld小时之前",allTime/hour];
        
    }else if (allTime<month){
        str=[NSString stringWithFormat:@"%ld天之前",allTime/day];
        
    }else if (allTime<year){
        str=[NSString stringWithFormat:@"%ld月之前",allTime/month];
        
    }else{
         str=[NSString stringWithFormat:@"%ld年之前",allTime/year];
    }
    //NSLog(@"%@",str);
    return str;
}

 

@end

来源：oschina

链接：https://my.oschina.net/u/2523541/blog/678350