NSString *dateStr=[dic objectForKey:@"date"];// 2012-05-17 11:23:23
NSCalendar *gregorian = [[NSCalendaralloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSUInteger unitFlags = NSMonthCalendarUnit | NSDayCalendarUnit;
NSDateFormatter *format=[[NSDateFormatteralloc] init];
[format setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *fromdate=[format dateFromString:dateStr];
NSTimeZone *fromzone = [NSTimeZone systemTimeZone];
NSInteger frominterval = [fromzone secondsFromGMTForDate: fromdate];
NSDate *fromDate = [fromdate dateByAddingTimeInterval: frominterval];
NSLog(@"fromdate=%@",fromDate);
[format release];
NSDate *date = [NSDate date];
NSTimeZone *zone = [NSTimeZonesystemTimeZone];
NSInteger interval = [zone secondsFromGMTForDate: date];
NSDate *localeDate = [date dateByAddingTimeInterval: interval];
NSLog(@"enddate=%@",localeDate);
NSDateComponents *components = [gregorian components:unitFlags fromDate:fromDate toDate:localeDate options:0];
NSInteger months = [components month];
NSInteger days = [components day];//年[components year]
NSLog(@"month=%d",months);
NSLog(@"days=%d",days);
[gregorian release];
if (months==0&&days==0) {
dateStr=[[dateStr substringFromIndex:11]substringToIndex:5];
cell.textLabel.text=[NSString stringWithFormat:@"今天 %@",dateStr];//今天 11:23
}else if(months==0&&days==1){
dateStr=[[dateStr substringFromIndex:11]substringToIndex:5];
cell.textLabel.text=[NSString stringWithFormat:@"昨天 %@",dateStr];//昨天 11:23
}else{
dateStr=[dateStr substringToIndex:10];
cell.textLabel.text=dateStr;
}