I want to mark several dates in a month with an Array about vurig-calendar HOT 1 OPEN

 __block NSMutableArray *dateMarkers = [[NSMutableArray alloc] init];
 __block NSMutableArray *dateMarkersColor = [[NSMutableArray alloc] init];

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    NSArray *test = [NSArray arrayWithObjects:@"2013-07-22",@"2013-07-23",@"2013-08-09",nil];

    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"yyyy-MM-dd"];

    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

    for (int i=0; i<test.count;i++){
        NSDate *mydate = [dateFormat dateFromString:[test objectAtIndex:i]];
        NSDateComponents *components = [gregorian components:NSMonthCalendarUnit fromDate:mydate];

        if (month == components.month) {
            [dateMarkers addObject:mydate];
            [dateMarkersColor addObject:[UIColor redColor]];
        }
    }

    dispatch_async(dispatch_get_main_queue(), ^{
        [calendarView markDates:dateMarkers withColors:dateMarkersColor];
    });
});