iphoneNSDate-获取今日日期并强制时间-iphoneNSDate-gettodaysdateandforcethetime

hopefully a quick one for someone! I am struggling to see why the code below isn't working. I am trying to get today's date (eg: 2010-09-10) and manually adding the time. It always seems to return 00:00:00 for the time though. any ideas where I'm going wrong?

希望有人能快一点!我很难理解下面的代码为什么不能工作。我正在尝试获取今天的日期(例如:2010-09-10)并手动添加时间。但是，它似乎总是会在00:00返回。你知道我哪里出错了吗?

NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
dateFormatter.dateFormat = @"yyyy-MM-dd";

NSString *actualDate = [dateFormatter stringFromDate:[NSDate date]];
NSDate *sDate = [dateFormatter dateFromString:[NSString stringWithFormat:@"%@ %@", actualDate, @"01:00:00"]];
NSDate *eDate = [dateFormatter dateFromString:[NSString stringWithFormat:@"%@ %@", actualDate, @"23:59:59"]];

The NSDate objects are returning the format 2010-09-10 00:00:00 +01:00 all the time. Somewhere it's just not picking up the time.... any ideas? many thanks.

NSDate对象一直在返回格式，2010-09-10 00:00 +01:00。这不是捡时间....的某个地方什么好主意吗?多谢。

* UPDATE *

*更新*

The code below works. I did as suggested and accessed the elements and updated them.

下面的代码是有效的。我按照建议做了，访问了元素并对它们进行了更新。

unsigned unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
    NSDate *date = [NSDate date];
    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSDateComponents *comps = [calendar components:unitFlags fromDate:date];

NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
dateFormatter.dateFormat = @"yyyy-MM-dd hh:mm:ss";

//update for the start date
[comps setHour:0];
[comps setMinute:0];
[comps setSecond:0];
NSDate *sDate = [calendar dateFromComponents:comps];

//update for the end date
[comps setHour:23];
[comps setMinute:59];
[comps setSecond:59];
NSDate *eDate = [calendar dateFromComponents:comps];

2 个解决方案

NSDate *                date;
NSString *              string, *timestamp;
NSDateFormatter *       formatter;

timestamp = @"17:30";

formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat: @"yyyy-MM-dd "];
[formatter setTimeZone: [NSTimeZone localTimeZone]];

string = [formatter stringFromDate: [NSDate date]];
string = [string stringByAppendingString: timestamp];

[formatter setDateFormat: @"yyyy-MM-dd HH:mm"];
date = [formatter dateFromString: string];