add current day with one day after and one day before to date picker objective-C

Question

I have a datepicker and I want to have just one row with 3 options: current day, one day after and one day before .

Would you help me to do that?

My question is, how can I add 'current day' with one day after and one day before ?

Answer 1

NSDateComponents *components = [[NSDateComponents alloc] init];
[components setDay:days];

NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *end = [gregorian dateByAddingComponents:components toDate:[NSDate date] options:0];

Where days is an integer representing the days you want to add/subtract from the current day.

Answer 2

This is how i did-

 -(void)getDate{
    NSString *str_CurDate  =[self getCurrentDate];
    NSString *str_NextDay  =[self getFormattedDate:[self dateByAddingDays:1]];
    NSString *str_PrevDay  =[self getFormattedDate:[self dateByAddingDays:-1]];

}

Now implement these method

-(NSString*)getCurrentDate{

NSDate *currDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"d/M/yyyy"];
NSString *dateString = [dateFormatter stringFromDate:currDate];
return dateString;

}


- (NSDate *) dateByAddingDays:(int)days {

NSDate *retVal;
NSDateComponents *components = [[NSDateComponents alloc] init];
[components setDay:days];

NSCalendar *gregorian = [[NSCalendar alloc]    initWithCalendarIdentifier:NSGregorianCalendar];
retVal= [gregorian dateByAddingComponents:components toDate:[NSDate date] options:0];

return retVal;

}


-(NSString*)getFormattedDate:(NSDate*)myDate{

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"d/M/yyyy"];
NSString *dateString = [dateFormatter stringFromDate:myDate];

return dateString;
}

Answer 3

Encapsulate in a category on NSDate

- (NSDate *) dateByAddingDays:(int)days {
    NSDate *retVal;
    NSDateComponents *components = [[NSDateComponents alloc] init];
    [components setDay:days];

    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    retVal = [gregorian dateByAddingComponents:components toDate:self options:0];
    return retVal;
}