zani的博客

 NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease]; [formatter setDateFormat:@"YYYY-MM-dd hh:mm:ss"]; NSString*locationTimeString=[formatter stringFromDate: [NSDate date]...

[[NSDate date] timeIntervalSinceDate:preLocationDate] > 60.0f NSTimeInterval返回的是一个double值，单位是秒 

 NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; NSInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekdayCalenda...

 NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; [dateFormatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]]; [dateFormatter setDateFormat:@"yyy...

1.    [formatte1r setDateFormat:@"YYYY-MM-dd hh:mm:ss a"];     //如果时间格式是12小时制的,会返回格式"2011-11-11 08-30-30 下午"; 如果是24小时制的, 格式是"2011-11-11 08-30-30" 2.    [formatte1r setDateFormat:@"YYYY-MM-dd HH:...

+(BOOL)timeIs24HourFormat { NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateStyle:NSDateFormatterNoStyle]; [formatter setTimeStyle:NSDateFormatterSho...

首先，传进来的时间String是按24小时格式，然后将这个时间转换成NSDate: NSString* formatstring = nil; if([NSLocale timeIs24HourFormat]) formatstring = @"yyyy-MM-dd hh:mm:ss"; else formatstring...

NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; [dateFormatter setDateFormat:@"YYYY-MM-dd EEEE"]; NSLog(@"%@", [dateFormatter stringFromDate:[NSDate d...