如何日期和时间从2个UIDatePickers结合？(How to combine date and

我有两个UIDatePickers在我的应用程序，一个模式是选择日期和其他时间模式。 我已经解雇到达的确切日期和时间的通知。 我能开火正确的时间提醒，但问题是，迄今为止没有被选中。 有没有什么办法来检查在同一时间日期和时间？

Thanx提前...

编辑

NSDate *date1 = [datePicker date];
NSDate *date2 = [timePicker date];
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

unsigned unitFlagsDate = NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit;
NSDateComponents *dateComponents = [gregorian components:unitFlagsDate fromDate:date1];
unsigned unitFlagsTime = NSHourCalendarUnit | NSMinuteCalendarUnit ;
NSDateComponents *timeComponents = [gregorian components:unitFlagsTime fromDate:date2];

[dateComponents setHour:[timeComponents hour]];
[dateComponents setMinute:[timeComponents minute]];

NSDate *combDate = [gregorian dateFromComponents:dateComponents];   

UILocalNotification *localNotif = [[UILocalNotification alloc] init];
if (localNotif == nil) return;
NSDate *fireTime = combDate;
localNotif.fireDate = fireTime;
localNotif.alertBody = @"Alert!";
localNotif.soundName = UILocalNotificationDefaultSoundName;  
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];

Answer 1:

NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *dateComponents = [calendar components:NSDayCalendarUnit|NSMonthCalendarUnit|NSYearCalendarUnit fromDate:self.datePicker.date];
NSDateComponents *timeComponents = [calendar components:NSHourCalendarUnit|NSMinuteCalendarUnit fromDate:self.timePicker.date];

NSDateComponents *newComponents = [[NSDateComponents alloc]init];
newComponents.timeZone = [NSTimeZone systemTimeZone];
[newComponents setDay:[dateComponents day]];
[newComponents setMonth:[dateComponents month]];
[newComponents setYear:[dateComponents year]];
[newComponents setHour:[timeComponents hour]];
[newComponents setMinute:[timeComponents minute]];

NSDate *combDate = [calendar dateFromComponents:newComponents]; 

NSLog(@" \ndate : %@ \ntime : %@\ncomDate : %@",self.datePicker.date,self.timePicker.date,combDate);

Answer 2:

试试这个：

转换日起的NSString和时间到的NSString。

Apppend时间为日期字符串。

现在转换是最终串入的NSDate

例如：（来自UR侧添加验证）

 NSDate *date1 = [datePicker date];
    NSDate *date2 = [timePicker date];

    NSString *date = [NSString stringWithFormat:@"%@",date1];
    NSString *time = [NSString stringWithFormat:@"%@",date2];

    NSString *dateAndTime = [NSString stringWithFormat:@"%@ %@",date,time];
    NSDate *dateTime = [self dateFromString:dateAndTime];



- (NSDate*) dateFromString:(NSString*)aStr
{


    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"] autorelease]];
    //[dateFormatter setDateFormat:@"YYYY-MM-dd HH:mm:ss a"];
    [dateFormatter setDateFormat:@"MM/dd/yyyy HH:mm:ss a"];
    [dateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];

    NSLog(@"%@", aStr);
    NSDate   *aDate = [dateFormatter dateFromString:aStr];
    [dateFormatter release];
    return aDate;
}

文章来源: How to combine date and time from two UIDatePickers?