ios时间相关的工具NSDate

短命女 2022-06-10 12:11 270阅读 0赞 
  1. /获取年月日对象
  2. +(NSDateComponents *)getDateComponents:(NSDate *)date {
  3.     NSCalendar *calendar = [NSCalendar currentCalendar];
  4. //    [calendar setFirstWeekday:2]; //设置每周的开始是星期一
  5. //    [calendar setMinimumDaysInFirstWeek:7]; //设置一周至少需要几天
  6.     return [calendar components:
  7.             NSYearCalendarUnit|
  8.             NSMonthCalendarUnit|
  9.             NSDayCalendarUnit|
  10.             NSWeekOfYearCalendarUnit|
  11.             NSQuarterCalendarUnit fromDate:date];
  12. }
  14. //获得某年的周数
  15. +(NSInteger)getWeek_AccordingToYear:(NSInteger)year {
  17.     NSDateComponents *comps = [DataTimeTool getDateComponents:[DataTimeTool dateFromString:[NSString stringWithFormat:@"%ld-12-31",year] DateFormat:@"yyyy-MM-dd"]];
  18.     NSInteger week = [comps weekOfYear];
  19.     if (week == 1) {
  20.         return 52;
  21.     }else {
  22.         return week;
  23.     }
  24. }
  26. /**
  27.  *  获取某年某周的范围日期
  28.  *
  29.  *  @param year       年份
  30.  *  @param weekofYear year里某个周
  31.  *
  32.  *  @return 时间范围字符串
  33.  */
  34. +(NSString*)getWeekRangeDate_Year:(NSInteger)year WeakOfYear:(NSInteger)weekofYear
  35. {
  36.     NSString *weekDate = @"";
  37.     NSString *timeAxis = [NSString stringWithFormat:@"%ld-06-01 12:00:00",(long)year];
  38.     NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  39.     [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
  40.     NSDate *date = [dateFormatter dateFromString:timeAxis];
  42.     NSCalendar *calendar = [NSCalendar currentCalendar];
  43.     /**这两个参数的设置影响着周次的个数和划分*****************/
  44.     [calendar setFirstWeekday:2]; //设置每周的开始是星期一
  45. //    [calendar setMinimumDaysInFirstWeek:7]; //设置一周至少需要几天
  46.     NSDateComponents *comps = [calendar components:(NSCalendarUnitWeekOfYear | NSCalendarUnitWeekday | NSCalendarUnitWeekdayOrdinal | NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay)
  47.                                           fromDate:date];
  48.     //时间轴是当前年的第几周
  49.     NSInteger todayIsWeek = [comps weekOfYear];
  50.     if ([DataTimeTool getWeek_AccordingToYear:year] == 53) {
  51.         todayIsWeek += 1;
  52.     }
  53.     //获取时间轴是星期几 1(星期天) 2(星期一) 3(星期二) 4(星期三) 5(星期四) 6(星期五) 7(星期六)
  54.     NSInteger todayIsWeekDay = [comps weekday];
  55.     // 计算当前日期和这周的星期一和星期天差的天数
  56.     //firstDiff 星期一相差天数 、 lastDiff 星期天相差天数
  57.     long firstDiff,lastDiff;
  58.     if (todayIsWeekDay == 1) {
  59.         firstDiff = -6;
  60.         lastDiff = 0;
  61.     }else
  62.     {
  63.         firstDiff = [calendar firstWeekday] - todayIsWeekDay;
  64.         lastDiff = 8 - todayIsWeekDay;
  65.     }
  67.     NSDate *firstDayOfWeek= [NSDate dateWithTimeInterval:24*60*60*firstDiff sinceDate:date];
  68.     NSDate *lastDayOfWeek= [NSDate dateWithTimeInterval:24*60*60*lastDiff sinceDate:date];
  70.     long weekdifference = weekofYear - todayIsWeek;
  72.     firstDayOfWeek= [NSDate dateWithTimeInterval:24*60*60*7*weekdifference sinceDate:firstDayOfWeek];
  73.     lastDayOfWeek= [NSDate dateWithTimeInterval:24*60*60*7*weekdifference sinceDate:lastDayOfWeek];
  75.     weekDate = [NSString stringWithFormat:@"第%ld周(%@-%@)",weekofYear,[DataTimeTool stringFromDate:firstDayOfWeek DateFormat:@"yyyy年M月d号"],[DataTimeTool stringFromDate:lastDayOfWeek DateFormat:@"yyyy年M月d号"]];
  77.     return weekDate;
  78. }
  80. /**************************当前时间********************************/
  81. +(NSDateComponents *)getCurrentDateComponents {
  82.     return [DataTimeTool getDateComponents:[NSDate date]];
  83. }
  84. +(NSInteger)getCurrentWeek {
  85.     NSInteger week = [[DataTimeTool stringFromDate:[NSDate date] DateFormat:@"w"] intValue];
  86.     return week;
  87. }
  88. +(NSInteger)getCurrentYear{
  89.     NSInteger year = [[DataTimeTool stringFromDate:[NSDate date] DateFormat:@"y"] intValue];
  90.     return year;
  91. }
  93. +(NSInteger)getCurrentQuarter{
  94.     NSInteger quarter = [[DataTimeTool stringFromDate:[NSDate date] DateFormat:@"q"] intValue];
  95.     return quarter;
  96. }
  98. +(NSInteger)getCurrentMonth{
  99.     NSInteger month = [[DataTimeTool stringFromDate:[NSDate date] DateFormat:@"M"] intValue];
  100.     return month;
  101. }
  103. +(NSInteger)getCurrentDay{
  104.     NSInteger day = [[DataTimeTool stringFromDate:[NSDate date] DateFormat:@"d"] intValue];
  105.     return day;
  106. }
  108. //NSString转NSDate
  109. +(NSDate *)dateFromString:(NSString *)dateString DateFormat:(NSString *)DateFormat{
  110.     NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  111.     [dateFormatter setDateFormat:DateFormat];
  112.     NSDate *destDate= [dateFormatter dateFromString:dateString];
  113.     return destDate;
  114. }
  116. //NSDate转NSString
  117. +(NSString *)stringFromDate:(NSDate *)date DateFormat:(NSString *)DateFormat{
  118.     NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  119.     [dateFormatter setDateFormat:DateFormat];
  120.     NSString *destDateString = [dateFormatter stringFromDate:date];
  121.     return destDateString;
  122. }
  124. //时间追加
  125. +(NSString *)dateByAddingTimeInterval:(NSTimeInterval)TimeInterval DataTime:(NSString *)dateStr DateFormat:(NSString *)DateFormat{
  126.     NSString *str = nil;
  127.     NSDate *date = [self dateFromString:dateStr DateFormat:DateFormat];
  128.     NSDate * newDate = [date dateByAddingTimeInterval:TimeInterval];
  129.     str = [self stringFromDate:newDate DateFormat:DateFormat];
  130.     return str;
  131. }
  133. //日期字符串格式化
  134. +(NSString *)getDataTime:(NSString *)dateStr DateFormat:(NSString *)DateFormat {
  135.    return [self getDataTime:dateStr DateFormat:DateFormat oldDateFormat:nil];
  136. }
  139. +(NSString *)getDataTime:(NSString *)dateStr DateFormat:(NSString *)DateFormat oldDateFormat:(NSString *)oldDateFormat{
  141.     if (!dateStr || [dateStr isEqualToString:@"—"]) {
  142.         return @"—";
  143.     }
  145.     if ([dateStr isEqualToString:@"0"]) {
  146.         return @"0";
  147.     }
  149.     if ([dateStr rangeOfString:@"+"].location != NSNotFound) {
  150.         NSArray *strarray = [dateStr componentsSeparatedByString:@"+"];
  151.         dateStr = strarray[0];
  152.     }
  154.     if ([dateStr rangeOfString:@"."].location != NSNotFound) {
  155.         NSArray *strarray = [dateStr componentsSeparatedByString:@"."];
  156.         dateStr = strarray[0];
  157.     }
  159.     if ([dateStr rangeOfString:@"T"].location != NSNotFound) {
  160.         dateStr = [dateStr stringByReplacingOccurrencesOfString:@"T" withString:@" "];
  161.     }
  163.     NSDateFormatter *newDateFormatter = [[NSDateFormatter alloc]init];
  164.     [newDateFormatter setDateFormat:DateFormat];
  166.     NSDateFormatter *oldDateFormatter = [[NSDateFormatter alloc] init];
  168.     if (oldDateFormat) {
  169.         [oldDateFormatter setDateFormat:oldDateFormat];
  170.     }else {
  171.         [oldDateFormatter setDateFormat:[self getFormat:dateStr]];
  172.     }
  174.     NSDate *date = [oldDateFormatter dateFromString:dateStr];
  176.     return [newDateFormatter stringFromDate:date];
  177. }
  179. +(int)getNumberOfCharactersInString:(NSString *)str c:(char)c {
  180.     int count = 0;
  181.     if ([str rangeOfString:[NSString stringWithFormat:@"%c",c]].location != NSNotFound){
  182.         for (int i=0;i<str.length;i++){
  183.             if ([str characterAtIndex:i] == c){
  184.                 count++;
  185.             }
  186.         }
  187.     }
  188.     return count;
  189. }
  191. +(NSString *)getFormat:(NSString *)dateString {
  192.     NSString *str = [NSString new];
  193.     int size = [self getNumberOfCharactersInString:dateString c:'-'];
  194.     if (size == 0){
  195.         str = [str stringByAppendingString:@"yyyy"];
  196.     }else if (size == 1){
  197.         str = [str stringByAppendingString:@"yyyy-MM"];
  198.     }else if (size == 2){
  199.         str = [str stringByAppendingString:@"yyyy-MM-dd"];
  200.     }
  201.     size = [self getNumberOfCharactersInString:dateString c:':'];
  202.     if (size == 0 && [dateString rangeOfString:@" "].location != NSNotFound){
  203.         str = [str stringByAppendingString:@" HH"];
  204.     }else if (size == 1){
  205.         str = [str stringByAppendingString:@" HH:mm"];
  206.     }else if (size == 2){
  207.         str = [str stringByAppendingString:@" HH:mm:ss"];
  208.     }
  209.     return str;
  210. }
  212. /**
  213.  *  json日期转iOS时间
  214.  *
  215.  *  @param string /Date()
  216.  *
  217.  *  @return
  218.  */
  219. +(NSString *)interceptTimeStampFromStr:(NSString *)string DateFormat:(NSString *)DateFormat{
  220.     if (!string || [string length] == 0 ) // 传入时间戳为空 返回
  221.     {
  222.         return @"—";
  223.     }
  224.     NSMutableString * mutableStr = [NSMutableString stringWithString:string];
  225.     NSString * timeStampString = [NSString string];
  226.     //  遍历取出括号内的时间戳
  227.     for (int i = 0; i < string.length; i ++) {
  228.         NSRange startRang = [mutableStr rangeOfString:@"("];
  229.         NSRange endRang = [mutableStr rangeOfString:@")"];
  230.         if (startRang.location != NSNotFound) {
  231.             // 左边括号位置
  232.             NSInteger leftLocation = startRang.location;
  233.             // 右边括号距离左边括号的长度
  234.             NSInteger rightLocation = endRang.location - startRang.location;
  235.             // 截取括号时间戳内容
  236.             timeStampString = [mutableStr substringWithRange:NSMakeRange(leftLocation + 1,rightLocation - 1)];
  237.         }
  238.     }
  240.     // 把时间戳转化成时间
  241.     NSTimeInterval interval=[timeStampString doubleValue] / 1000.0;
  242.     NSDate *date = [NSDate dateWithTimeIntervalSince1970:interval];
  243.     NSDateFormatter *objDateformat = [[NSDateFormatter alloc] init];
  244.     [objDateformat setDateFormat:DateFormat];//年月日时分秒
  245.     NSString * timeStr = [NSString stringWithFormat:@"%@",[objDateformat stringFromDate: date]];
  246.     return timeStr;
  247. }

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