ios 如何使用 NSDate 获取下一个日期？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/1081689/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How can i get next date using NSDate?
提问by Jai
Possible Duplicate:
iOS and finding Tomorrow
可能的重复：
iOS 和寻找明天
How can i get next date using NSDate. Please send me the solution.
如何使用 NSDate 获取下一个日期。请把解决方案发给我。
回答by Massimo Cafaro
In the following, yourDate represents your input NSDate; nextDate represents the next day.
在下面，yourDate 代表你输入的 NSDate；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];
回答by Paresh Rathod
NSDate *tomorrow = [NSDate dateWithTimeInterval:(24*60*60) sinceDate:[NSDate date]];
Much more easiest way..
更简单的方法..
回答by S.P.
what about this methods ?
这个方法怎么样？
http://www.drobnik.com/touch/2009/05/adding-days-to-nsdate/
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);
回答by Vanya
I guess this method works just fine for me.
我想这个方法对我来说很好用。
NSString *zajtra = [[NSDate date] dateByAddingTimeInterval:86400];
回答by Jai
//Add the below code to init method or viewDidload
//将下面的代码添加到init方法或viewDidload
[[NSUserDefaults standardUserDefaults] setObject:[NSDate date] forKey:@"Date"];
//Add this code where you wanna retrieve next or previous dates
//将此代码添加到您要检索下一个或上一个日期的位置
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"];
