Question

In my app, I am getting a Date and start time of the same date and end time. The end time could be the time of very next day.

example : Date : 11/01/2011
          start time : 5:30 PM
          end time :   4:30 AM (of next day morning)

I am not getting the End Date.

How can I add one day into the start date based on the end time. I’ve referred many answers at SO but could not find the solution.

Answer 1

you should use this function

NSDate *endDate = [NSDate dateWithTimeIntervalSinceNow:86400];

here 86400 is 60(seconds)*60(minutes)*24(hours).
If your startDate is not from current date then you can use this method

- (id)initWithTimeInterval:(NSTimeInterval)secsToBeAdded sinceDate:(NSDate *)anotherDate

now you are getting like this

example : Date : 11/01/2011
          start time : 5:30 PM
          end time :   4:30 AM (of next day morning)

so you can have two dates, represents start time and end time. Use below method to get time interval

- (NSTimeInterval)timeIntervalSince1970

now you have two time interval for two different dates, right? Now simply subtract it and you will get what you want.