iOS 关于时间天数星期月份的总结
#import <Foundation/Foundation.h>
@interface NSDate (SLExtend)
// 判断是否是本周更早
- (BOOL)isThisWeekEarlier;
// 判断是否是本周晚些
- (BOOL)isThisWeekLater;
// 判断是否是下一周或者更远
- (BOOL)isNextWeekOrLater;
// 判断是否是上一周或者更早
- (BOOL)isLastWeekOrEarlier;
// 判断是否是昨天或更早
- (BOOL)isYesterdayOrEarlier;
// 判断是否是明天或更晚
- (BOOL)isTomorrowOrLater;
// 判断是否是前天
- (BOOL)isTheDayBeforeYesterday;
// 判断是否是昨天
- (BOOL)isYesterDay;
// 判断是否是今天
- (BOOL)isToday;
// 判断是否是明天
- (BOOL)isTomorrow;
// 判断是否是后天
- (BOOL)isTheDayAfterTomorrow;
// 转换成年月日（其他补0）
- (NSDate *)convertDefinitionToDate;
// 转换标准时间
- (NSString *)convertToStandardDateFormat;
// 转换本星期标准时间
- (NSString *)convertToStandardThisWeekDateFormat;
// 转换成标准前天、昨天、今天、明天、后天时间
- (NSString *)convertToStandardRecentlyDateFormat;
// 转换成时间
- (NSString *)convertToStandardTimeDateFormat;
// 转换成标准时间（不带星期）
- (NSString *)convertToStandardNormalDateFormat;
// 转换成YYYY-MM-DD HH:MM:SS格式时间
- (NSString *)convertToStandardYYYYMMDDHHMMSSDateFormat;
// 转换成YYYY-MM-DD
- (NSString *)convertToStandardYYYYMMDDDateFormat;
// 转换成YYYYMMDDHHMMSS
- (NSString *)convertToYYYYMMDDHHMMSSDateFormat;
// 指定日期是星期几，1表示一周的第一天周日
+ (int)weekdayByDate:(NSDate *)date;
+ (NSString *)weekdayInChineseByDate:(NSDate *)date;
// 指定时间往前推多少天
+ (NSDate *)dateWithDays:(NSUInteger)days beforDate:(NSDate *)date;
+ (NSDate *)dateWithDays:(NSUInteger)days afterDate:(NSDate *)date;
// 获取某个时间点前多少天的总集合
+ (NSArray *)dayNamesAtDays:(NSInteger)days beforDate:(NSDate *)date;
// 获取年
+ (int)yearByDate:(NSDate *)date;
// 获取月
+ (int)monthByDate:(NSDate *)date;
// 获取日
+ (int)dayByDate:(NSDate *)date;
// 该日期处于一年中的第几周
+ (int)weekOfYearByDate:(NSDate *)date;
//获取当前的时间HH:mm
+ (NSString *)getCurrentDateHHMM;
//获取当前的时间yyyyMMdd HH:mm
+(NSString *)getCurrentDateYYYYMMDDHHMM;
//获取指定的时间yyyyMMdd
+(NSString *)getDateYYYYMMDD:(NSDate *)date;
// 该月有多少天
+ (int)daysInMonthByDate:(NSDate *)date;
+ (NSString *)convertToyyyMMddHHmmssString:(NSDate *)date;
+ (NSDate *)convertDateFromString:(NSString*)uiDate;
+ (NSDate *)stringToDate:(NSString *)dateString;
@end
#import "NSDate+SLExtend.h"
@implementation NSDate (SLExtend)
- (NSDate *)dateStartOfWeek
{
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[gregorian setFirstWeekday:2]; //monday is first day
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSWeekdayCalendarUnit fromDate:self];
NSDateComponents *componentsToSubtract = [[NSDateComponents alloc] init];
[componentsToSubtract setDay: - ((([components weekday] - [gregorian firstWeekday]) + 7 ) % 7)];
NSDate *beginningOfWeek = [gregorian dateByAddingComponents:componentsToSubtract toDate:self options:0];
NSDateComponents *componentsStripped = [gregorian components: (NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit) fromDate: beginningOfWeek];
beginningOfWeek = [gregorian dateFromComponents: componentsStripped];
return beginningOfWeek;
}
// ================================ 扩展 ===========================
// 判断是否是昨天或更早
- (BOOL)isYesterdayOrEarlier
{
NSDate *yesterdayDefintionDate = [NSDate dateWithTimeIntervalSinceNow:-60 * 60 * 24];
NSDate *definitionDate = [self convertDefinitionToDate];
if ([yesterdayDefintionDate isEqualToDate:definitionDate]) {
return YES;
}
NSDate *earlierDate = [definitionDate earlierDate:[NSDate date]];
if (earlierDate == self) {
return YES;
}
return NO;
}
// 判断是否是明天或更晚
- (BOOL)isTomorrowOrLater
{
NSDate *tomorrowDefintionDate = [NSDate dateWithTimeIntervalSinceNow:60 * 60 * 24];
NSDate *definitionDate = [self convertDefinitionToDate];
if ([tomorrowDefintionDate isEqualToDate:definitionDate]) {
return YES;
}
NSDate *laterDate = [definitionDate laterDate:tomorrowDefintionDate];
if (laterDate == self) {
return YES;
}
return NO;
}
// =================================================================
// 判断是否是下一周或者更远
- (BOOL)isNextWeekOrLater
{
if (![self isThisWeek]) {
NSDate *laterDate = [self laterDate:[NSDate date]];
if (laterDate == self) {
return YES;
}
}
return NO;
}
// 判断是否是上一周或者更早
- (BOOL)isLastWeekOrEarlier
{
if (![self isThisWeek]) {
NSDate *earlierDate = [self earlierDate:[NSDate date]];
if (earlierDate == self) {
return YES;
}
}
return NO;
}
// 判断是否是本周
- (BOOL)isThisWeek
{
NSDate *thisWeekStartDay = [[NSDate date] dateStartOfWeek];
if ([thisWeekStartDay isEqualToDate:[self dateStartOfWeek]]) {
return YES;
}
return NO;
}
// 判断是否是本周更早
- (BOOL)isThisWeekEarlier
{
if ([self isThisWeek]) {
NSDate *earlierDate = [self earlierDate:[NSDate date]];
if (earlierDate == self) {
return YES;
}
}
return NO;
}
// 判断是否是本周晚些
- (BOOL)isThisWeekLater
{
if ([self isThisWeek]) {
NSDate *laterDate = [self laterDate:[NSDate date]];
if (laterDate == self) {
return YES;
}
}
return NO;
}
// 判断是否是前天
- (BOOL)isTheDayBeforeYesterday
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit);
NSDateComponents *components = [cal components:calendarUnit fromDate:[NSDate dateWithTimeIntervalSinceNow:-60 * 60 * 24 * 2]];
NSDate *dayAfterTomorrow = [cal dateFromComponents:components];
components = [cal components:calendarUnit fromDate:self];
NSDate *otherDate = [cal dateFromComponents:components];
if([dayAfterTomorrow isEqualToDate:otherDate]) {
return YES;
}
return NO;
}
// 判断是否是昨天
- (BOOL)isYesterDay
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit);
NSDateComponents *components = [cal components:calendarUnit fromDate:[NSDate dateWithTimeIntervalSinceNow:-60 * 60 * 24]];
NSDate *today = [cal dateFromComponents:components];
components = [cal components:calendarUnit fromDate:self];
NSDate *otherDate = [cal dateFromComponents:components];
if([today isEqualToDate:otherDate]) {
return YES;
}
return NO;
}
// 判断是否是今天
- (BOOL)isToday
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit);
NSDateComponents *components = [cal components:calendarUnit fromDate:[NSDate date]];
NSDate *today = [cal dateFromComponents:components];
components = [cal components:calendarUnit fromDate:self];
NSDate *otherDate = [cal dateFromComponents:components];
if([today isEqualToDate:otherDate]) {
return YES;
}
return NO;
}
// 判断是否是明天
- (BOOL)isTomorrow
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit);
NSDateComponents *components = [cal components:calendarUnit fromDate:[NSDate dateWithTimeIntervalSinceNow:60 * 60 * 24]];
NSDate *tomorrow = [cal dateFromComponents:components];
components = [cal components:calendarUnit fromDate:self];
NSDate *otherDate = [cal dateFromComponents:components];
if([tomorrow isEqualToDate:otherDate]) {
return YES;
}
return NO;
}
// 判断是否是后天
- (BOOL)isTheDayAfterTomorrow
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit);
NSDateComponents *components = [cal components:calendarUnit fromDate:[NSDate dateWithTimeIntervalSinceNow:60 * 60 * 24 * 2]];
NSDate *dayAfterTomorrow = [cal dateFromComponents:components];
components = [cal components:calendarUnit fromDate:self];
NSDate *otherDate = [cal dateFromComponents:components];
if([dayAfterTomorrow isEqualToDate:otherDate]) {
return YES;
}
return NO;
}
// 转换成年月日（其他补0）
- (NSDate *)convertDefinitionToDate
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSDate *dateConverted = [cal dateFromComponents:components];
return dateConverted;
}
// 转换标准时间
- (NSString *)convertToStandardDateFormat
{
// eg: 2014-01-03 19:36 星期五
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit
| NSCalendarUnitWeekday
| NSCalendarUnitHour
| NSCalendarUnitMinute
| NSCalendarUnitSecond);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSInteger year = [components year];
NSInteger month = [components month];
NSInteger day = [components day];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger weekday = [components weekday];
NSString *weekdayStr = nil;
switch (weekday) {
case 1:
weekdayStr = @"星期日";
break;
case 2:
weekdayStr = @"星期一";
break;
case 3:
weekdayStr = @"星期二";
break;
case 4:
weekdayStr = @"星期三";
break;
case 5:
weekdayStr = @"星期四";
break;
case 6:
weekdayStr = @"星期五";
break;
case 7:
weekdayStr = @"星期六";
break;
default:
break;
}
NSString *standardDateFormatStr = [NSString stringWithFormat:@"%04d-%02d-%02d %02d:%02d %@", (int)year, (int)month, (int)day, (int)hour, (int)minute, weekdayStr];
return standardDateFormatStr;
}
// 转换本星期标准时间
- (NSString *)convertToStandardThisWeekDateFormat
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit
| NSCalendarUnitWeekday
| NSCalendarUnitHour
| NSCalendarUnitMinute
| NSCalendarUnitSecond);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger weekday = [components weekday];
NSString *weekdayStr = nil;
switch (weekday) {
case 1:
weekdayStr = @"星期日";
break;
case 2:
weekdayStr = @"星期一";
break;
case 3:
weekdayStr = @"星期二";
break;
case 4:
weekdayStr = @"星期三";
break;
case 5:
weekdayStr = @"星期四";
break;
case 6:
weekdayStr = @"星期五";
break;
case 7:
weekdayStr = @"星期六";
break;
default:
return nil;
break;
}
NSString *standardThisWeekDateFormatStr = [NSString stringWithFormat:@"%@ %02d:%02d", weekdayStr, (int)hour, (int)minute];
return standardThisWeekDateFormatStr;
}
- (NSString *)convertToStandardTimeDateFormat
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSCalendarUnitHour
| NSCalendarUnitMinute);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSString *timeDateFormatStr = [NSString stringWithFormat:@"%02d:%02d", (int)hour, (int)minute];
return timeDateFormatStr;
}
- (NSString *)convertToStandardNormalDateFormat
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit
| NSCalendarUnitWeekday
| NSCalendarUnitHour
| NSCalendarUnitMinute
| NSCalendarUnitSecond);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSInteger year = [components year];
NSInteger month = [components month];
NSInteger day = [components day];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSString *dateFormatStr = [NSString stringWithFormat:@"%04d-%02d-%02d %02d:%02d", (int)year, (int)month, (int)day, (int)hour, (int)minute];
return dateFormatStr;
}
// 转换成YYYY-MM-DD HH:MM:SS格式时间
- (NSString *)convertToStandardYYYYMMDDHHMMSSDateFormat
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit
| NSCalendarUnitWeekday
| NSCalendarUnitHour
| NSCalendarUnitMinute
| NSCalendarUnitSecond);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSInteger year = [components year];
NSInteger month = [components month];
NSInteger day = [components day];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger second = [components second];
NSString *standardDateFormatStr = [NSString stringWithFormat:@"%04d-%02d-%02d %02d:%02d:%02d", (int)year, (int)month, (int)day, (int)hour, (int)minute, (int)second];
return standardDateFormatStr;
}
- (NSString *)convertToYYYYMMDDHHMMSSDateFormat {
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit
| NSCalendarUnitWeekday
| NSCalendarUnitHour
| NSCalendarUnitMinute
| NSCalendarUnitSecond);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSInteger year = [components year];
NSInteger month = [components month];
NSInteger day = [components day];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger second = [components second];
NSString *standardDateFormatStr = [NSString stringWithFormat:@"%04d%02d%02d%02d%02d%02d", (int)year, (int)month, (int)day, (int)hour, (int)minute, (int)second];
return standardDateFormatStr;
}
// 转换成YYYY-MM-DD
- (NSString *)convertToStandardYYYYMMDDDateFormat
{
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit
| NSCalendarUnitWeekday
| NSCalendarUnitHour
| NSCalendarUnitMinute
| NSCalendarUnitSecond);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSInteger year = [components year];
NSInteger month = [components month];
NSInteger day = [components day];
NSString *standardDateFormatStr = [NSString stringWithFormat:@"%04d-%02d-%02d", (int)year, (int)month, (int)day];
return standardDateFormatStr;
}
// 转换成标准前天、昨天、今天、明天、后天时间 今天 19:36
- (NSString *)convertToStandardRecentlyDateFormat
{
NSString *dateStr = nil;
if ([self isToday]) {
dateStr = @"今天";
} else if ([self isTomorrow]) {
dateStr = @"明天";
} else if ([self isTheDayAfterTomorrow]) {
dateStr = @"后天";
} else if ([self isYesterDay]) {
dateStr = @"昨天";
} else if ([self isTheDayBeforeYesterday]) {
dateStr = @"前天";
} else {
NSLog(@"类型错误:%s", __FUNCTION__);
return nil;
}
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSCalendarUnitHour
| NSCalendarUnitMinute);
NSDateComponents *components = [cal components:calendarUnit fromDate:self];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSString *todayDateFormatStr = [NSString stringWithFormat:@"%@ %02d:%02d", dateStr, (int)hour, (int)minute];
return todayDateFormatStr;
}
+ (NSDateComponents *)dateComponentsByDate:(NSDate *)date {
NSCalendar *calendar = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = NSYearCalendarUnit| NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit | NSWeekdayCalendarUnit | NSWeekdayOrdinalCalendarUnit | NSWeekOfYearCalendarUnit;
return [calendar components:calendarUnit fromDate:date];
}
+ (int)weekdayByDate:(NSDate *)date {
return (int)[[self dateComponentsByDate:date] weekday];
}
+ (NSString *)weekdayInChineseByDate:(NSDate *)date {
NSString *name = nil;
NSInteger weekday = [NSDate weekdayByDate:date];
switch (weekday) {
case 1:
name = @"周日";
break;
case 2:
name = @"周一";
break;
case 3:
name = @"周二";
break;
case 4:
name = @"周三";
break;
case 5:
name = @"周四";
break;
case 6:
name = @"周五";
break;
case 7:
name = @"周六";
break;
default:
break;
}
return name;
}
+ (NSDate *)dateWithDays:(NSUInteger)days beforDate:(NSDate *)date {
NSTimeInterval interval = [date timeIntervalSinceReferenceDate] - 86400 * days;
return [NSDate dateWithTimeIntervalSinceReferenceDate:interval];
}
+ (NSDate *)dateWithDays:(NSUInteger)days afterDate:(NSDate *)date {
NSTimeInterval interval = [date timeIntervalSinceReferenceDate] + 86400 * days;
return [NSDate dateWithTimeIntervalSinceReferenceDate:interval];
}
+ (NSArray *)dayNamesAtDays:(NSInteger)days beforDate:(NSDate *)date {
NSMutableArray *names = [NSMutableArray array];
NSInteger currentMonthDay = [NSDate dayByDate:date];
for (int i = (int)days - 1; i >= currentMonthDay ; i--) {
NSDate *date = [NSDate dateWithDays:i beforDate:[NSDate date]];
NSInteger day = [NSDate dayByDate:date];
[names addObject:[NSString stringWithFormat:@"%d", (int)day]];
}
for (int i = (int)currentMonthDay - 1; i >= 0; i--) {
NSDate *date = [NSDate dateWithDays:i beforDate:[NSDate date]];
NSInteger day = [NSDate dayByDate:date];
[names addObject:[NSString stringWithFormat:@"%d", (int)day]];
}
return names;
}
+ (int)yearByDate:(NSDate *)date {
return (int)[[self dateComponentsByDate:date] year];
}
+ (int)monthByDate:(NSDate *)date {
return (int)[[self dateComponentsByDate:date] month];
}
+ (int)dayByDate:(NSDate *)date {
return (int)[[self dateComponentsByDate:date] day];
}
+ (int)weekOfYearByDate:(NSDate *)date {
return (int)[[self dateComponentsByDate:date] weekOfYear];
}
+(NSString *)getCurrentDateHHMM
{
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"HH:mm"];
return [formatter stringFromDate:[NSDate date]];
}
+(NSString *)getCurrentDateYYYYMMDDHHMM
{
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyyMMdd HH:mm"];
return [formatter stringFromDate:[NSDate date]];
}
+(NSString *)getDateYYYYMMDD:(NSDate *)date
{
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyyMMdd"];
return [formatter stringFromDate:date];
}
+ (int)daysInMonthByDate:(NSDate *)date {
NSRange dayRange = [[NSCalendar currentCalendar] rangeOfUnit:NSDayCalendarUnit inUnit:NSMonthCalendarUnit forDate:date];
return (int)dayRange.length;
}
+ (NSString *)convertToyyyMMddHHmmssString:(NSDate *)date {
NSCalendar *cal = [NSCalendar currentCalendar];
NSCalendarUnit calendarUnit = ( NSEraCalendarUnit
| NSYearCalendarUnit
| NSMonthCalendarUnit
| NSDayCalendarUnit
| NSCalendarUnitWeekday
| NSCalendarUnitHour
| NSCalendarUnitMinute
| NSCalendarUnitSecond);
NSDateComponents *components = [cal components:calendarUnit fromDate:date];
NSInteger year = [components year];
NSInteger month = [components month];
NSInteger day = [components day];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger second = [components second];
NSString *dateFormatStr = [NSString stringWithFormat:@"%04d-%02d-%02d %02d:%02d:%02d", (int)year, (int)month, (int)day, (int)hour, (int)minute, (int)second];
return dateFormatStr;
}
+ (NSDate *) convertDateFromString:(NSString *)dateString {
static NSDateFormatter *formatter = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
formatter = [[NSDateFormatter alloc] init];
});
[formatter setDateFormat:@"yyyy-MM-dd HH-mm-ss"];
NSDate *date=[formatter dateFromString:dateString];
return date;
}
+ (NSDate *)stringToDate:(NSString *)dateString {
static NSDateFormatter *formatter = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
formatter = [[NSDateFormatter alloc] init];
});
[formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *date=[formatter dateFromString:dateString];
return date;
}
@end
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