iOS 获取本周，本月，本季，的起止日期

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- (void)getQuarterBeginAndEndWith:(NSDate *)currentDate{

NSDate *nowDate = [NSDate date];

NSCalendar *calendar = [NSCalendar currentCalendar];

NSDateComponents *comp = [calendar components:NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitWeekday  fromDate:nowDate];

/**获取当前的月份*/

NSInteger curentMonth = [comp month];

NSString * currentYear = [NSString stringWithFormat:@"%ld",[comp year]];

NSString * beginTime = [self getQuarterStartDateWithYear:currentYear currentMonth:curentMonth];

NSString * endTime = [self getQuarterEndDateWithYear:currentYear currentMonth:curentMonth];

NSString * str = [NSString stringWithFormat:@"季度开始时间 == %@  季度结束时间 == %@",beginTime,endTime];

NSLog(@"%@",str);

}

//获得某季度的开始日期

- (NSString *)getQuarterStartDateWithYear:(NSString *)paraYear currentMonth:(NSInteger)currentMonth {

NSString * beginTime = @"";

if (currentMonth < 4) {

beginTime = [paraYear stringByAppendingString:@"-01-01"];

} else if (currentMonth >= 4 && currentMonth < 7) {

beginTime = [paraYear stringByAppendingString:@"-04-01"];

} else if (currentMonth >= 7 && currentMonth < 10) {

beginTime = [paraYear stringByAppendingString:@"-07-01"];

} else if (currentMonth >= 10 && currentMonth < 12) {

beginTime = [paraYear stringByAppendingString:@"-10-01"];

}

return beginTime;

}

//获得某季度的结束日期

- (NSString *)getQuarterEndDateWithYear:(NSString *)paraYear currentMonth:(NSInteger)currentMonth {

NSString * endTime = @"";

if (currentMonth < 4) {

endTime = [paraYear stringByAppendingString:@"-03-31"];

} else if (currentMonth >= 4 && currentMonth < 7) {

endTime = [paraYear stringByAppendingString:@"-06-30"];

} else if (currentMonth >= 7 && currentMonth < 10) {

endTime = [paraYear stringByAppendingString:@"-09-30"];

} else if (currentMonth >= 10 && currentMonth < 12) {

endTime = [paraYear stringByAppendingString:@"-12-31"];

}

return endTime;

}

- (void)getWeekBeginAndEndWith:(NSDate *)newDate{

NSDate *nowDate = [NSDate date];

NSCalendar *calendar = [NSCalendar currentCalendar];

NSDateComponents *comp = [calendar components:NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitWeekday  fromDate:nowDate];

// 获取今天是周几

NSInteger weekDay = [comp weekday];

/**获取当前几个月*/

NSInteger monthDay = [comp month];

NSLog(@"%ld",monthDay);

// 获取几天是几号

NSInteger day = [comp day];

NSLog(@"%ld----%ld",weekDay,day);

// 计算当前日期和本周的星期一和星期天相差天数

long firstDiff,lastDiff;

//    weekDay = 1;

if (weekDay == 1)

{

firstDiff = -6;

lastDiff = 0;

}

else

{

firstDiff = [calendar firstWeekday] - weekDay + 1;

lastDiff = 8 - weekDay;

}

NSLog(@"firstDiff: %ld   lastDiff: %ld",firstDiff,lastDiff);

// 在当前日期(去掉时分秒)基础上加上差的天数

NSDateComponents *firstDayComp = [calendar components:NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay  fromDate:nowDate];

[firstDayComp setDay:day + firstDiff];

NSDate *firstDayOfWeek = [calendar dateFromComponents:firstDayComp];

NSDateComponents *lastDayComp = [calendar components:NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay   fromDate:nowDate];

[lastDayComp setDay:day + lastDiff];

NSDate *lastDayOfWeek = [calendar dateFromComponents:lastDayComp];

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

[formatter setDateFormat:@"MM月dd日"];

NSString *firstDay = [formatter stringFromDate:firstDayOfWeek];

NSString *lastDay = [formatter stringFromDate:lastDayOfWeek];

NSLog(@"%@=======%@",firstDay,lastDay);

NSString *dateStr = [NSString stringWithFormat:@"%@-%@",firstDay,lastDay];

NSLog(@"%@",dateStr);

}

- (void)getMonthBeginAndEndWith:(NSDate *)newDate{

if (newDate == nil) {

newDate = [NSDate date];

}

double interval = 0;

NSDate *beginDate = nil;

NSDate *endDate = nil;

NSCalendar *calendar = [NSCalendar currentCalendar];

[calendar setFirstWeekday:2];

//设定周一为周首日

BOOL ok = [calendar rangeOfUnit:NSCalendarUnitMonth startDate:&beginDate interval:&interval forDate:newDate]; //分别修改为 NSDayCalendarUnit NSWeekCalendarUnit NSYearCalendarUnit

if (ok) {

endDate = [beginDate dateByAddingTimeInterval:interval-1];

}else {

return;

}

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

[myDateFormatter setDateFormat:@"yyyy.MM.dd"];

NSString *beginString = [myDateFormatter stringFromDate:beginDate];

NSString *endString = [myDateFormatter stringFromDate:endDate];

NSString *s = [NSString stringWithFormat:@"%@-%@",beginString,endString];

NSLog(@"%@",s);

}

原文地址：https://www.cnblogs.com/Jackie-subDai/p/9552540.html

时间： 2024-10-08 23:42:07

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