用objective-c解析日期

NSDateFormatter

NSDateComponents

NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat:@\"dd\'-\'MM\'-\'yyyy\"];
// Your date represented as a NSDate
NSDate *date = [formatter dateFromString:myDateString];
// Now, use NSCalendar / NSDateComponents to get the components
NSDateComponents *comps = [[NSCalendar currentCalendar] components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit
                                                          fromDate:date];

[comps day]

[comps month]

[comps year]

    NSString *dateAsString = @\"30-05-2011\";
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@\"d-MM-yyyy\"];
    NSDate *datePlain = [formatter dateFromString:dateAsString]; 
    [formatter release];

NSDateFormatter

dateFromString:

NSDateFormatter *df = [[NSDateFormatter alloc]init];
[df setDateFormat:@\"yyyy-MM-dd\"];
NSDate *d = [df dateFromString:@\"2011-05-10\"];
[df release];