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Tag: Objective-C/日付と時刻
[NSDate date]
NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setTimeStyle:NSDateFormatterFullStyle]; [formatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZZZ"]; NSDate *date = [formatter dateFromString:@"2009-12-05T20:26:00+09:00"]; [formatter release];
NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setTimeStyle:NSDateFormatterFullStyle];
[formatter setDateFormat:@"EEE MMM dd HH:mm:ss ZZZ yyyy"];
NSDate *date = [formatter dateFromString:str];
NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease]; [formatter setDateFormat:@"YYYY/MM/dd HH:mm:ss"]; NSDate* date = [NSDate date]; NSString* dateStr = [formatter stringFromDate:date];
NSDate *currentDate = [NSDate date]; NSCalendar* calendar = [NSCalendar currentCalendar]; NSDateComponents* components = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate:currentDate]; // Get necessary date components [components month] //gives you month [components day] //gives you day [components year] // gives you year
NSDateFormatter *inputDateFormatter = [[NSDateFormatter alloc] init]; [inputDateFormatter setDateFormat:@"yyyy/MM/dd HH:mm:ss"]; NSDate *dateA = [inputDateFormatter dateFromString:@"2000/03/01 00:00:00"]; NSDate *dateB = [inputDateFormatter dateFromString:@"2000/03/03 00:00:00"]; // dateBとdateAの時間の間隔を取得(dateB - dateAなイメージ) NSTimeInterval since = [dateB timeIntervalSinceDate:dateA]; NSLog(@"%f秒", since); NSLog(@"%f分", since/60); NSLog(@"%f時", since/(60*60)); NSLog(@"%f日", since/(24*60*60)); [inputDateFormatter release];
