Date range betwen now and end of the day and next day and end of the next day-CodePudding

I'm trying to make a DatePicker with a choice between today and tomorrow. Two buttons to switch Date Range.

How to make today range? i. e. Now -> End of the day

How to make tomorrow range? i. e. Start of the next day -> End of the next day

what i've tried, but it's not correct

 var todayRange: ClosedRange<Date> {
    let calendar = Calendar.current
    var endComponents = DateComponents()
    endComponents.day = 1

    let endDate = calendar.date(byAdding: endComponents, to: Date.now)!
    return Date.now ... endDate
}

var tommorowRange: ClosedRange<Date> {
    let calendar = Calendar.current
    var startComponents = DateComponents()
    startComponents.day = 2
    var endComponents = DateComponents()
    endComponents.day = 1

    let startDate = calendar.date(byAdding: startComponents, to: Date.now)!
    let endDate = calendar.date(byAdding: endComponents, to: startDate)!
    return startDate ... endDate
}

CodePudding user response：

You're close.

I would suggest:

Get the start of day for today
Add 1 day
Subtract 0.001 seconds.

That will give you the end of today.

Here is some sample code.

let today = Date.now
let startOfToday = Calendar.current.startOfDay(for: today)
let oneDay = DateComponents(day: 1)
guard let tomorrow = Calendar.current.date(byAdding: oneDay, to: startOfToday) else { fatalError() }

let endOfToday = tomorrow.advanced(by: -0.001)
let endOfTodayString = DateFormatter.localizedString(from: endOfToday, dateStyle: .medium, timeStyle: .medium)
print("End of today = "   endOfTodayString)

guard let endOfTomorrow = Calendar.current.date(byAdding: oneDay, to: endOfToday) else { fatalError() }
let endOfTomorrowString = DateFormatter.localizedString(from: endOfToday, dateStyle: .medium, timeStyle: .medium)
print("End of tomorrow = "   endOfTomorrowString)

In my locale (US), on October 7th, that generates:

End of today = Oct 7, 2022 at 11:59:59 PM

End of tomorrow = Oct 7, 2022 at 11:59:59 PM