Lista de todas las vacaciones americanas como NSDates

Question

Estoy buscando una forma de obtener todas las vacaciones en Estados Unidos como una matriz de NSDate s. ¿Hay alguna manera de implementar eso?

Answer 1

• Here encontrará RSS-feeds con las vacaciones. No muestra el año, pero en los documentos encontrará información sobre cómo cambiar los intervalos de fechas.
• Descárguelo. Sugeriría ASIHTTPRequest para esa tarea.
  analiza la fuente RSS. puede hacerlo mediante un análisis XML normal, o puede usar un analizador especializado. MWFeedParser sería una opción.
• Guarde las fechas. ya sea mediante el uso de CoreData, o Event Kit Framework

Answer 2

Si solo desea feriados federales en EE. UU., escribí este método. Sin embargo, podría usar estas técnicas para calcular cualquier vacación.

-(NSArray *)getUSHolidyas{ 
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; 
    formatter.dateFormat = @"yyyy"; 

    NSString *year = [formatter stringFromDate:[NSDate date]]; 
    formatter.dateFormat = @"M/d/yyyy"; 

    //Constant Holidays 
    NSDate *newYearsDay = [formatter dateFromString:[NSString stringWithFormat:@"1/1/%@",year]]; //Use next year for the case where we are adding days near end of december. 
    NSDate *indDay = [formatter dateFromString:[NSString stringWithFormat:@"7/4/%@",year]]; 
    NSDate *vetDay = [formatter dateFromString:[NSString stringWithFormat:@"11/11/%@",year]]; 
    NSDate *xmasDay = [formatter dateFromString:[NSString stringWithFormat:@"12/25/%@",year]]; 


    //Variable Holidays 
    NSInteger currentYearInt = [[[NSCalendar currentCalendar] 
           components:NSYearCalendarUnit fromDate:[NSDate date]] year]; 

    NSDate *mlkDay = [self getTheNth:3 occurrenceOfDay:2 inMonth:1 forYear:currentYearInt]; 
    NSDate *presDay = [self getTheNth:3 occurrenceOfDay:2 inMonth:2 forYear:currentYearInt]; 
    NSDate *memDay = [self getTheNth:5 occurrenceOfDay:2 inMonth:5 forYear:currentYearInt]; // Let's see if there are 5 Mondays in May 
    NSInteger month = [[[NSCalendar currentCalendar] components:NSYearCalendarUnit fromDate:memDay] month]; 
    if (month > 5) { //Check that we are still in May 
     memDay = [self getTheNth:4 occurrenceOfDay:2 inMonth:5 forYear:currentYearInt]; 
    } 
    NSDate *labDay = [self getTheNth:1 occurrenceOfDay:2 inMonth:9 forYear:currentYearInt]; 
    NSDate *colDay = [self getTheNth:2 occurrenceOfDay:2 inMonth:10 forYear:currentYearInt]; 
    NSDate *thanksDay = [self getTheNth:4 occurrenceOfDay:5 inMonth:11 forYear:currentYearInt]; 

    return @[newYearsDay,mlkDay,presDay,memDay,indDay,labDay,colDay,vetDay,thanksDay,xmasDay]; 
} 

-(NSDate *)getTheNth:(NSInteger)n occurrenceOfDay:(NSInteger)day inMonth:(NSInteger)month forYear:(NSInteger)year{ 

    NSDateComponents *dateComponents = [[NSDateComponents alloc] init]; 

    dateComponents.year = year; 
    dateComponents.month = month; 
    dateComponents.weekday = day; // sunday is 1, monday is 2, ... 
    dateComponents.weekdayOrdinal = n; // this means, the first of whatever weekday you specified 
    return [[NSCalendar currentCalendar] dateFromComponents:dateComponents]; 
}