我怎样才能得到下一个date使用NSDate？

可能重复：
iOS和发现明天

我怎样才能得到下一个date使用NSDate。 请给我解决scheme。

Answer 1

在下面，yourDate代表你的inputNSDate; nextDate代表第二天。

// start by retrieving day, weekday, month and year components for yourDate NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; NSDateComponents *todayComponents = [gregorian components:(NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit) fromDate:yourDate]; NSInteger theDay = [todayComponents day]; NSInteger theMonth = [todayComponents month]; NSInteger theYear = [todayComponents year]; // now build a NSDate object for yourDate using these components NSDateComponents *components = [[NSDateComponents alloc] init]; [components setDay:theDay]; [components setMonth:theMonth]; [components setYear:theYear]; NSDate *thisDate = [gregorian dateFromComponents:components]; [components release]; // now build a NSDate object for the next day NSDateComponents *offsetComponents = [[NSDateComponents alloc] init]; [offsetComponents setDay:1]; NSDate *nextDate = [gregorian dateByAddingComponents:offsetComponents toDate:thisDate options:0]; [offsetComponents release]; [gregorian release]; 

Answer 2

 NSDate *tomorrow = [NSDate dateWithTimeInterval:(24*60*60) sinceDate:[NSDate date]]; 

更简单的方法..

Answer 3

这个方法呢？

http://www.drobnik.com/touch/2009/05/adding-days-to-nsdate/

 NSDate *now = [NSDate date]; int daysToAdd = 50; // or 60 :-) // set up date components NSDateComponents *components = [[[NSDateComponents alloc] init] autorelease]; [components setDay:daysToAdd]; // create a calendar NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease]; NSDate *newDate2 = [gregorian dateByAddingComponents:components toDate:now options:0]; NSLog(@"Clean: %@", newDate2); 

Answer 4

我想这个方法对我来说工作得很好。

 NSString *zajtra = [[NSDate date] dateByAddingTimeInterval:86400]; 

Answer 5

//将下面的代码添加到init方法或viewDidload

 [[NSUserDefaults standardUserDefaults] setObject:[NSDate date] forKey:@"Date"]; 

//添加这个代码，你想检索下一个或上一个date

 NSDate *tomorrow = [[NSUserDefaults standardUserDefaults] valueForKey:@"Date"]; NSTimeInterval secondsPerDay = 24 * 60 * 60; NSDate *date = [tomorrow addTimeInterval:secondsPerDay]; //Change NSDate *date = [tomorrow addTimeInterval:-secondsPerDay]; for yesterday tomorrow = date; [self setDate:tomorrow]; dateTextField.text = [self getDate]; [[NSUserDefaults standardUserDefaults] setObject:tomorrow forKey:@"Date"];