获取星期日期在IOS SDK [英] Get weeks date in IOS SDK

问题描述

我想获得目前&下周有日期名称的日期。

I want to get the current & next week dates with day name.

如果今天的日期是28-06-2013（星期五），那么我想将日期从23-06-2013（星期日）至29-06-2013（星期六）作为本周的。

i.e. If today's date is 28-06-2013 (Friday) then I want to get the dates from 23-06-2013(sunday) to 29-06-2013 (Saturday) as the this current week.

下周
我想获得30-06-2013（星期日）至06-07-2013星期六）。

for next week I want to get dates from 30-06-2013(sunday) to 06-07-2013 (saturday).

我该如何做？

谢谢，

解决方案

Here is sample code that does the trick.

- （NSArray *）daysThisWeek
{
return [self daysInWeek：0 fromDate：[NSDate date]];
}

- （NSArray *）daysNextWeek
{
return [self daysInWeek：1 fromDate：[NSDate date]];
}
- （NSArray *）daysInWeek：（int）weekOffset fromDate：（NSDate *）date
{
NSCalendar * calendar = [NSCalendar currentCalendar];

//请求当前周
NSDateComponents * comps = [[NSDateComponents alloc] init];
comps = [calendar components：NSWeekCalendarUnit | NSYearCalendarUnit fromDate：date];
//创建星期开始日期
NSDate * weekstart = [calendar dateFromComponents：comps];
if（weekOffset> 0）{
NSDateComponents * moveWeeks = [[NSDateComponents alloc] init];
moveWeeks.week = 1;
weekstart = [calendar dateByAddingComponents：moveWeeks toDate：weekstart options：0];
}

//添加7天
NSMutableArray * week = [NSMutableArray arrayWithCapacity：7];
for（int i = 1; i <= 7; i ++）{
NSDateComponents * compsToAdd = [[NSDateComponents alloc] init];
compsToAdd.day = i;
NSDate * nextDate = [calendar dateByAddingComponents：compsToAdd toDate：weekstart options：0];
[week addObject：nextDate];

}
return [NSArray arrayWithArray：week];
}

-(NSArray*)daysThisWeek { return [self daysInWeek:0 fromDate:[NSDate date]]; } -(NSArray*)daysNextWeek { return [self daysInWeek:1 fromDate:[NSDate date]]; } -(NSArray*)daysInWeek:(int)weekOffset fromDate:(NSDate*)date { NSCalendar *calendar = [NSCalendar currentCalendar]; //ask for current week NSDateComponents *comps = [[NSDateComponents alloc] init]; comps=[calendar components:NSWeekCalendarUnit|NSYearCalendarUnit fromDate:date]; //create date on week start NSDate* weekstart=[calendar dateFromComponents:comps]; if (weekOffset>0) { NSDateComponents* moveWeeks=[[NSDateComponents alloc] init]; moveWeeks.week=1; weekstart=[calendar dateByAddingComponents:moveWeeks toDate:weekstart options:0]; } //add 7 days NSMutableArray* week=[NSMutableArray arrayWithCapacity:7]; for (int i=1; i<=7; i++) { NSDateComponents *compsToAdd = [[NSDateComponents alloc] init]; compsToAdd.day=i; NSDate *nextDate = [calendar dateByAddingComponents:compsToAdd toDate:weekstart options:0]; [week addObject:nextDate]; } return [NSArray arrayWithArray:week]; }

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