Objective

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系统语言环境

@property (class, readonly, copy) NSCalendar *currentCalendar;  @property (class, readonly, strong) NSCalendar *autoupdatingCurrentCalendar

#pragma mark 获取系统语言环境- (void)testSystemLocaleInformation {    // 系统环境、NSCalendarIdentifierGregorian    //  第一次用此方法实例化对象后，即使修改了系统日历设定，这个对象也不会改变。    NSCalendar *calendar = [NSCalendar currentCalendar];    // 修改系统日历设定，其实例化的对象也会随之改变。    calendar = [NSCalendar autoupdatingCurrentCalendar];}

初始化

+ (nullable NSCalendar *)calendarWithIdentifier:(NSCalendarIdentifier)calendarIdentifierConstant- (instancetype)init- (nullable id)initWithCalendarIdentifier:(NSCalendarIdentifier)ident

- (void)testCreatingAndInitializing {    // (+) 自定义语言环境    NSCalendar *calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierChinese];    // (-)    calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierChinese];}

获取重要信息

@property (readonly, copy) NSCalendarIdentifier calendarIdentifier;@property (nullable, copy) NSLocale *locale;@property (copy) NSTimeZone *timeZone;@property NSUInteger firstWeekday;@property NSUInteger minimumDaysInFirstWeek;- (NSRange)rangeOfUnit:(NSCalendarUnit)smaller inUnit:(NSCalendarUnit)larger forDate:(NSDate *)date;- (BOOL)rangeOfWeekendStartDate:(out NSDate * _Nullable * _Nullable)datep interval:(out nullable NSTimeInterval *)tip containingDate:(NSDate *)date;

#pragma mark 获取重要信息- (void)testGettingInformation {    NSCalendar *calendar = [NSCalendar currentCalendar];    NSDate *date = [NSDate date];    NSLog(@"calendarIdentifier:%@", calendar.calendarIdentifier);    // 设置每周的第一天从星期几开始，比如：1代表星期日开始，2代表星期一开始，以此类推。默认值是1    NSLog(@"firstWeekday:%d", calendar.firstWeekday);    // 设置每年及每月第一周必须包含的最少天数，比如：设定第一周最少包括3天，则value传入3    NSLog(@"minimumDaysInFirstWeek:%d", calendar.minimumDaysInFirstWeek);    // 设置本地化信息    NSLog(@"locale:%@", calendar.locale);    // 获取最大和最小范围    NSRange range = [calendar maximumRangeOfUnit:NSCalendarUnitYear];    range = [calendar minimumRangeOfUnit:NSCalendarUnitYear];    // 获取一个小的单位在一个大的单位里面的序数，获取当日是这一周的第几天    NSUInteger day = [calendar ordinalityOfUnit:NSCalendarUnitWeekday inUnit:NSCalendarUnitWeekOfMonth forDate:date];    NSLog(@"ordinalityOfUnit:%d", day);    // 根据参数提供的时间点，得到一个小的单位在一个大的单位里面的取值范围    range = [calendar rangeOfUnit:NSCalendarUnitWeekday inUnit:NSCalendarUnitWeekOfMonth forDate:date];    // 根据参数提供的时间点，返回所在日历单位的开始时间。如果startDate和interval均可以计算，则返回YES；否则返回NO    NSTimeInterval count = 0;    NSDate *dateOut = nil;    // 获取时间所处的月份，起始时间点    BOOL rangeOfUnit = [calendar rangeOfUnit:NSCalendarUnitMonth startDate:&dateOut interval:&count forDate:date];    if (rangeOfUnit) {        //得到本地时间，避免时区问题        NSInteger interval = [calendar.timeZone secondsFromGMTForDate:dateOut];        NSDate *localeDate = [dateOut dateByAddingTimeInterval:interval];        NSLog(@"%@", dateOut);        NSLog(@"%@",localeDate);        NSLog(@"%f",count);    } else {        NSLog(@"无法计算");    }    // 返回某个给定的日期是否在一个周末期间,如果startDate和interval均可以计算，则返回YES；否则返回NO    rangeOfUnit = [calendar rangeOfWeekendStartDate:&dateOut interval:&count containingDate:date];    if (rangeOfUnit) {        //得到本地时间，避免时区问题        NSInteger interval = [calendar.timeZone secondsFromGMTForDate:dateOut];        NSDate *localeDate = [dateOut dateByAddingTimeInterval:interval];        NSLog(@"%@", dateOut);        NSLog(@"%@",localeDate);        NSLog(@"%f",count);    } else {        NSLog(@"无法计算");    }}

日历计算

- (nullable NSDate *)dateFromComponents:(NSDateComponents *)comps;- (NSDateComponents *)components:(NSCalendarUnit)unitFlags fromDate:(NSDate *)date;- (void)enumerateDatesStartingAfterDate:(NSDate *)start matchingComponents:(NSDateComponents *)comps options:(NSCalendarOptions)opts usingBlock:(void (NS_NOESCAPE ^)(NSDate * _Nullable date, BOOL exactMatch, BOOL *stop))block ;- (nullable NSDate *)nextDateAfterDate:(NSDate *)date matchingComponents:(NSDateComponents *)comps options:(NSCalendarOptions)options ;- (nullable NSDate *)nextDateAfterDate:(NSDate *)date matchingUnit:(NSCalendarUnit)unit value:(NSInteger)value options:(NSCalendarOptions)options;- (nullable NSDate *)nextDateAfterDate:(NSDate *)date matchingHour:(NSInteger)hourValue minute:- (NSInteger)minuteValue second:(NSInteger)secondValue options:(NSCalendarOptions)options;- (nullable NSDate *)dateBySettingUnit:(NSCalendarUnit)unit value:(NSInteger)v ofDate:(NSDate *)date options:(NSCalendarOptions)opts ;- (nullable NSDate *)dateBySettingHour:(NSInteger)h minute:(NSInteger)m second:(NSInteger)s ofDate:(NSDate *)date options:(NSCalendarOptions)opts ;- (BOOL)date:(NSDate *)date matchesComponents:(NSDateComponents *)components ;

#pragma mark 日历计算- (void)testCalendricalCalculations {    NSCalendar *calendar = [NSCalendar currentCalendar];    NSDate *date = [NSDate date];    // 在参数date基础上，增加一个NSDateComponents类型的时间增量    NSDateComponents *compt = [[NSDateComponents alloc] init];    [compt setHour:1];// 增加1小时    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    date = [calendar dateByAddingComponents:compt toDate:date options:0];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // 根据NSCalendarUnit增加一个常量的时间增量    date = [calendar dateByAddingUnit:NSCalendarUnitHour value:1 toDate:date options:0];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // NSDateComponents转NSDate    date = [calendar dateFromComponents:compt];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // 生成当前日期不变，指定时、分、秒的日期    date = [NSDate date];    date = [calendar dateBySettingHour:1 minute:3 second:4 ofDate:date options:0];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // 根据NSCalendarUnit和设置的值，生成日期    date = [calendar dateBySettingUnit:NSCalendarUnitHour value:2 ofDate:date options:0];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // 根据时代、年、月、日、时、分、秒、毫 生成日期    date = [calendar dateWithEra:1 year:2015 month:10 day:18 hour:15 minute:6 second:8 nanosecond:100];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // 根据时代、年、周、星期、时、分、秒、毫 生成NSDate    date = [calendar dateWithEra:1 yearForWeekOfYear:2015 weekOfYear:2 weekday:3 hour:1 minute:6 second:8 nanosecond:0];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterFullStyle timeStyle:NSDateFormatterMediumStyle]);    // 使用指定NSDateComponents匹配指定的NSDate，如果全部匹配成成功，则返回YES，否则No    BOOL matchesComponents = [calendar date:date matchesComponents:compt];    NSLog(@"matchesComponents:%d", matchesComponents);    // 寻找下一个时间节点，且此节点完全匹配NSDateComponents    date = [calendar nextDateAfterDate:date matchingComponents:compt options:NSCalendarMatchNextTime];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // 寻找下一个时间点，且匹配指定的时、分、秒    date = [calendar nextDateAfterDate:date matchingHour:15 minute:0 second:0 options:NSCalendarMatchNextTime];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // 寻找下一个时间点，且匹配NSCalendarUnit和指定的值    date = [calendar nextDateAfterDate:date matchingUnit:NSCalendarUnitHour value:16 options:NSCalendarMatchNextTime];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);    // 返回给定日期的当日起始时间    date = [calendar startOfDayForDate:date];    NSLog(@"%@", [NSDateFormatter localizedStringFromDate:date dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterMediumStyle]);}

时间比较

- (NSComparisonResult)compareDate:(NSDate *)date1 toDate:(NSDate *)date2 toUnitGranularity:(NSCalendarUnit)unit ;- (BOOL)isDate:(NSDate *)date1 equalToDate:(NSDate *)date2 toUnitGranularity:(NSCalendarUnit)unit;- (BOOL)isDate:(NSDate *)date1 inSameDayAsDate:(NSDate *)date2 ;- (BOOL)isDateInToday:(NSDate *)date;- (BOOL)isDateInYesterday:(NSDate *)date;- (BOOL)isDateInTomorrow:(NSDate *)date;- (BOOL)isDateInWeekend:(NSDate *)date;

#pragma mark 时间比较- (void)testComparing {    NSCalendar *calendar = [NSCalendar currentCalendar];    NSDate *date = [NSDate date];    NSDate *toDate = [date dateByAddingTimeInterval:-10];// 增加10秒    // 比较两个日期的NSCalendarUnitDay大小    NSComparisonResult result = [calendar compareDate:date toDate:toDate toUnitGranularity:NSCalendarUnitDay];    NSLog(@"compareDate:%d", result);    // 比较两个日期的NSCalendarUnitDay 是否相等    BOOL compare = [calendar isDate:date equalToDate:toDate toUnitGranularity:NSCalendarUnitDay];    // 两个日期是否在同一天    compare = [calendar isDate:date inSameDayAsDate:toDate];    // 指定的日期是否在今天    compare = [calendar isDateInToday:date];    // 指定的日期是否在明天    compare = [calendar isDateInTomorrow:date];    // 指定的日期是否在周末    compare = [calendar isDateInWeekend:date];    // 指定的日期是否在昨天    compare = [calendar isDateInYesterday:date];}

提取信息

- (void)getEra:(out nullable NSInteger *)eraValuePointer year:(out nullable NSInteger *)yearValuePointer month:(out nullable NSInteger *)monthValuePointer day:(out nullable NSInteger *)dayValuePointer fromDate:(NSDate *)date ;- (NSDateComponents *)components:(NSCalendarUnit)unitFlags fromDate:(NSDate *)startingDate toDate:(NSDate *)resultDate options:(NSCalendarOptions)opts;- (void)getEra:(out nullable NSInteger *)eraValuePointer yearForWeekOfYear:(out nullable NSInteger *)yearValuePointer weekOfYear:(out nullable NSInteger *)weekValuePointer weekday:(out nullable NSInteger *)weekdayValuePointer fromDate:(NSDate *)date;- (void)getHour:(out nullable NSInteger *)hourValuePointer minute:(out nullable NSInteger *)minuteValuePointer second:(out nullable NSInteger *)secondValuePointer nanosecond:(out nullable NSInteger *)nanosecondValuePointer fromDate:(NSDate *)date ;- (NSInteger)component:(NSCalendarUnit)unit fromDate:(NSDate *)date;- (NSDateComponents *)components:(NSCalendarUnit)unitFlags fromDateComponents:(NSDateComponents *)startingDateComp toDateComponents:(NSDateComponents *)resultDateComp options:(NSCalendarOptions)options;

#pragma mark 提取组件- (void)testExtractingComponents {    NSCalendar *calendar = [NSCalendar currentCalendar];    NSDate *date = [NSDate date];    NSDate *toDate = [calendar dateByAddingUnit:NSCalendarUnitHour value:1 toDate:date options:0];    // 提取NSDate对应的NSCalendarUnit的数值,只能提取一个值    NSInteger component = [calendar component:NSCalendarUnitHour fromDate:date];    NSLog(@"NSCalendarUnitHour:%d", component);    // 提取多个数据    NSCalendarUnit unitFlags = NSCalendarUnitHour | NSCalendarUnitMinute;// 提取时和分    NSDateComponents *components = [calendar components:unitFlags fromDate:date];    // 根据指定NSCalendarUnit参数，比较两个NSDate之间的差异    components = [calendar components:unitFlags fromDate:date toDate:toDate options:NSCalendarWrapComponents];    // 根据指定NSCalendarUnit参数，比较两个NSDate之间的差异    NSDateComponents *fromDateComponents = [[NSDateComponents alloc] init];    fromDateComponents.hour = 13;    NSDateComponents *toDateComponents = [[NSDateComponents alloc] init];    fromDateComponents.hour = 14;    components = [calendar components:unitFlags fromDateComponents:fromDateComponents toDateComponents:toDateComponents options:NSCalendarWrapComponents];    // 根据时区提取所有数据    components = [calendar componentsInTimeZone:calendar.timeZone fromDate:date];    // 提取时代、年、月、日    NSInteger era, year, month, day;    [calendar getEra:&era year:&year month:&month day:&day fromDate:date];    // 提取时代、年、第几周、周几    NSInteger weekOfYear, weekday;    [calendar getEra:&era yearForWeekOfYear:&year weekOfYear:&weekOfYear weekday:&weekday fromDate:date];    // 提取时、分、秒、毫    NSInteger hour, minute, second, nanosecond;    [calendar getHour:&hour minute:&minute second:&second nanosecond:&nanosecond fromDate:date];}

上午、下午符号

@property (readonly, copy) NSString *AMSymbol  ;@property (readonly, copy) NSString *PMSymbol  ;

#pragma mark - 上午下午符号- (void)testAMAndPMSymbols {    NSCalendar *calendar = [NSCalendar currentCalendar];    // 上午    NSString *symbol = calendar.AMSymbol;    // 下午    symbol = calendar.PMSymbol;}

周符号

@property (readonly, copy) NSArray<NSString *> *weekdaySymbols  ;@property (readonly, copy) NSArray<NSString *> *shortWeekdaySymbols   ;@property (readonly, copy) NSArray<NSString *> *veryShortWeekdaySymbols   ;@property (readonly, copy) NSArray<NSString *> *standaloneWeekdaySymbols   ;@property (readonly, copy) NSArray<NSString *> *shortStandaloneWeekdaySymbols  ;@property (readonly, copy) NSArray<NSString *> *veryShortStandaloneWeekdaySymbols  ;

#pragma mark 周符号- (void)testWeekdaySymbols {    NSCalendar *calendar = [NSCalendar currentCalendar];    // 星期日, 星期一, 星期二, 星期三, 星期四, 星期五, 星期六    NSArray<NSString *> *array =  calendar.weekdaySymbols;    array =  calendar.standaloneWeekdaySymbols;    // 周日, 周一, 周二, 周三, 周四, 周五, 周六    array =  calendar.shortWeekdaySymbols;    array =  calendar.shortStandaloneWeekdaySymbols;    // 日, 一, 二, 三, 四, 五, 六    array =  calendar.veryShortWeekdaySymbols;    array =  calendar.veryShortStandaloneWeekdaySymbols;    // 举例, NSDate提取星期几    NSDate *date = [NSDate date];    NSInteger component = [calendar component:NSCalendarUnitWeekday fromDate:date];    component--;// 周是从1开头的    NSString *symbol = [calendar.weekdaySymbols objectAtIndex:component];    NSLog(@"NSCalendarUnitWeekday:%@", symbol);}

月符号

@property (readonly, copy) NSArray<NSString *> *monthSymbols                    ;@property (readonly, copy) NSArray<NSString *> *shortMonthSymbols              ;@property (readonly, copy) NSArray<NSString *> *veryShortMonthSymbols          ;@property (readonly, copy) NSArray<NSString *> *standaloneMonthSymbols          ;@property (readonly, copy) NSArray<NSString *> *shortStandaloneMonthSymbols    ;@property (readonly, copy) NSArray<NSString *> *veryShortStandaloneMonthSymbols ;

#pragma mark 管理月符号- (void)testMonthSymbols {    NSCalendar *calendar = [NSCalendar currentCalendar];    // 一月, 二月, 三月, 四月, 五月, 六月, 七月, 八月, 九月, 十月, 十一月, 十二月    NSArray<NSString *> *array =  calendar.monthSymbols;    array =  calendar.standaloneMonthSymbols;    // 1月, 2月, 3月, 4月, 5月, 6月, 7月, 8月, 9月, 10月, 11月, 12月    array =  calendar.shortMonthSymbols;    array =  calendar.shortStandaloneMonthSymbols;    // 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12    array =  calendar.veryShortMonthSymbols;    array =  calendar.veryShortStandaloneMonthSymbols;}

季度符号

@property (readonly, copy) NSArray<NSString *> *quarterSymbols                 ;@property (readonly, copy) NSArray<NSString *> *shortQuarterSymbols            ;@property (readonly, copy) NSArray<NSString *> *standaloneQuarterSymbols       ;@property (readonly, copy) NSArray<NSString *> *shortStandaloneQuarterSymbols  ;

#pragma mark 管理季度符号- (void)testQuarterSymbols {    NSCalendar *calendar = [NSCalendar currentCalendar];    // 第一季度, 第二季度, 第三季度, 第四季度    NSArray<NSString *> *array =  calendar.quarterSymbols;    array =  calendar.standaloneQuarterSymbols;    // 1季度, 2季度, 3季度, 4季度    array =  calendar.shortQuarterSymbols;    array =  calendar.shortStandaloneQuarterSymbols;}

公元前和公元符号

@property (readonly, copy) NSArray<NSString *> *eraSymbols      ;@property (readonly, copy) NSArray<NSString *> *longEraSymbols  ;

#pragma mark 公元前/公元- (void)testEraSymbols {    NSCalendar *calendar = [NSCalendar currentCalendar];    // 公元前, 公元    NSArray<NSString *> *array =  calendar.eraSymbols;    array =  calendar.longEraSymbols;}

原文章

http://blog.csdn.net/y550918116j/article/details/49205461

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