Get list of days from selected month - ios

Question

I want to get list of days in selected month.
For example, If user select feb then it show 1 to 28 0r 29 days. How can i do that?
Thanks

Answer 1

You can try the following code, I have given the today's date to find the list of dates in this month. You can give some other date to find the list of that given month.
NSDate *today = [NSDate date];
NSCalendar *cal = [NSCalendar currentCalendar];
NSMutableArray *datesThisMonth = [NSMutableArray array];
NSRange rangeOfDaysThisMonth = [cal rangeOfUnit:NSDayCalendarUnit inUnit:NSMonthCalendarUnit forDate:today];
NSDateComponents *components = [cal components:(NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit | NSEraCalendarUnit) fromDate:today];
[components setHour:0];
[components setMinute:0];
[components setSecond:0];
for (NSInteger i = rangeOfDaysThisMonth.location; i < NSMaxRange(rangeOfDaysThisMonth); ++i) {
[components setDay:i];
NSDate *dayInMonth = [cal dateFromComponents:components];
[datesThisMonth addObject:dayInMonth];
}
NSLog(#"datesThisMonth: %#", datesThisMonth);

Answer 2

You can retrieve the number of days in specified month
NSCalendar* cal = [NSCalendar currentCalendar];
NSDateComponents* comps = [[NSDateComponents alloc] init];
// Set month here
[comps setMonth:2]; // 2 = February
NSRange range = [cal rangeOfUnit:NSDayCalendarUnit
inUnit:NSMonthCalendarUnit
forDate:[cal dateFromComponents:comps]];
NSLog(#"current day count in this month: %lu", (unsigned long)range.length);

Answer 3

I have an open source calendar event project. Maybe you can check it out if you need anything.
DPCalendar
I have simplied it to
- (NSInterger) numberOfDaysForMonth:(NSDate *)date {
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate: date];
[components setDay:1];
//Get the first day of the month
NSDate *firstDay = [calendar dateFromComponents:components];
[components setDay:0];
[components setMonth:components.month + 1];
//Get the last day of the month
NSDate *lastDay = [calendar dateFromComponents:components];
components = [self.calendar components:NSDayCalendarUnit fromDate:firstDay toDate:lastDay options:0];
return components.day + 1;
}
Cheers

Answer 4

Generally, we only need to handle Feb depend on the year, here's my method implemented:
+ (NSUInteger)numberOfDaysForYear:(NSInteger)year
month:(NSInteger)month
{
if (2 == month) {
NSCalendar * gregorianCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDateComponents * dateComponents = [[NSDateComponents alloc] init];
[dateComponents setYear:year];
[dateComponents setMonth:month];
[dateComponents setDay:1];
NSDate * firstDayDate = [gregorianCalendar dateFromComponents:dateComponents];
NSRange days = [gregorianCalendar rangeOfUnit:NSCalendarUnitDay
inUnit:NSCalendarUnitMonth
forDate:firstDayDate];
return days.length;
} else if (4 == month || 6 == month || 9 == month || 11 == month) {
return 30;
} else {
return 31;
}
}