It seems that there is an issue with the NSQuarterCalendarUnit being ignored (haven’t verified, but did see a bug reported). Anyway, it is simple enough to get around… Just use the NSDateFormatter class. // After your NSDate *date, add… NSDateFormatter *quarterOnly = [[NSDateFormatter alloc]init]; [quarterOnly setDateFormat:@”Q”]; int quarter = [[quarterOnly stringFromDate:date] intValue]; // Then change … Read more
Your statement The problem with the above method is that you can only set one unit of time … is not correct. NSCalendarUnit conforms to the RawOptionSetType protocol which inherits from BitwiseOperationsType. This means that the options can be bitwise combined with & and |. In Swift 2 (Xcode 7) this was changed again to … Read more
In macOS 10.9+ & iOS 8+, there’s a method on NSCalendar/Calendar that does exactly this! – (BOOL)isDateInToday:(NSDate *)date So you’d simply do Objective-C: BOOL today = [[NSCalendar currentCalendar] isDateInToday:date]; Swift 3: let today = Calendar.current.isDateInToday(date)
I wrote Date extensions to get Date for certain weekday and here is how easy it is to use with Swift 5, Date.today() // Oct 15, 2019 at 9:21 AM Date.today().next(.monday) // Oct 21, 2019 at 9:21 AM Date.today().next(.sunday) // Oct 20, 2019 at 9:21 AM Date.today().previous(.sunday) // Oct 13, 2019 at 9:21 AM Date.today().previous(.monday) … Read more
As of Swift 2, NS_OPTIONS (such as NSCalendarOptions) are mapped to Swift as a OptionSetType which offers a set-like interface. In particular, “no options” can now be specified as [] instead of nil: let components = cal.components(unit, fromDate: calcDesp!, toDate: calHoy!, options: []) See also Swift 2.0 – Binary Operator “|” cannot be applied to … Read more
You cannot set custom repeat intervals with UILocalNotification. This has been asked before (see below) but only limited options are provided. The repeatInterval parameter is an enum type and it limited to specific values. You cannot multiply those enumerations and get multiples of those intervals. You cannot have more than 64 local notifications set in … Read more
Swift 2 The NSCalendarUnit names have changed in Swift 2. Also, now we have to pass these arguments in an OptionSet, like this: let components = calendar.components([.Hour, .Minute, .Second, .Nanosecond], fromDate: date) Swift 3 Many things have changed, according to the Swift API Design Guidelines. Updated syntax: let date = Date() let calendar = Calendar.current() … Read more
Swift 3 & 4 Retrieving the day of the week’s number is dramatically simplified in Swift 3 because DateComponents is no longer optional. Here it is as an extension: extension Date { func dayNumberOfWeek() -> Int? { return Calendar.current.dateComponents([.weekday], from: self).weekday } } // returns an integer from 1 – 7, with 1 being Sunday … Read more
Just add one day unit to the date until it reaches the current date (Swift 2 code): var date = startDateNSDate // first date let endDate = NSDate() // last date // Formatter for printing the date, adjust it according to your needs: let fmt = NSDateFormatter() fmt.dateFormat = “dd/MM/yyyy” // While date <= endDate … Read more
Swift 3 and 4 drop-in extensions This actually gets a lot easier with Swift 3+: You can do it without guard (you could if you wanted to, but because DateComponents is a non-optional type now, it’s no longer necessary). Using iOS 8’s startOfDayForDate (now startOfDay), you don’t need to manually set the time to 12pm … Read more