Jtapplecalendar: Single Range Selection

[Kevinw14]

Latest Version: 7.1.6

I'm trying to create a range function that will highlight everything in between two dates. If they pick a third date it will unhighlight the range in the previous two dates and start a new range with the third date picked.

if departureDate != nil && returnDate == nil {
   returnDate = date
   calendar.selectDates(from: departureDate!, to: date, triggerSelectionDelegate: false, keepSelectionIfMultiSelectionAllowed: true)
} else if departureDate == nil {
   departureDate = date
} else {
   returnDate = nil
   calendar.deselectAllDates(triggerSelectionDelegate: true)
   departureDate = date
}

This is the code I have in func calendar(_ calendar: JTAppleCalendarView, didSelectDate date: Date, cell: JTAppleCell?, cellState: CellState)

If I trigger the selection delegate then it will deselect the selected dates, because departureDate and returnDate already have a value so it will erase the selectedDates, and returnDate becomes nil. Any way to do this process better or how to update the cells in the middle of the selected dates without calling the selection delegate?

[dev-yong]

How about use this logic?

func calendar(_ calendar: JTAppleCalendarView, didSelectDate date: Date, cell: JTAppleCell?, cellState: CellState) {
        guard let calendarCell = cell as? CalendarCell else { return }
        calendarCell.cellState = cellState

        if let fromDate = self.fromDate, let toDate = self.toDate {
            if fromDate.compare(date) == .orderedDescending {
                self.fromDate = date
            } else if toDate.compare(date) == .orderedAscending {
                self.toDate = date
            }
        } else {
            self.fromDate = date
            self.toDate = date
        }

        if let fromDate = self.fromDate, let toDate = self.toDate {
            calendar.selectDates(from: fromDate, to: toDate, triggerSelectionDelegate: false, keepSelectionIfMultiSelectionAllowed: true)
        }
    }

    func calendar(_ calendar: JTAppleCalendarView, didDeselectDate date: Date, cell: JTAppleCell?, cellState: CellState) {
        guard let calendarCell = cell as? CalendarCell else { return }
        calendarCell.cellState = cellState

        guard let fromDate = self.fromDate,
                let toDate = self.toDate else {return}

        if fromDate == date && toDate == date{
            self.fromDate = nil
            self.toDate = nil
        } else if fromDate == date {
            self.fromDate = toDate
        } else if toDate == date {
            self.toDate = fromDate
        } else {
            guard let beforeDay = Calendar.current.dateComponents([.day], from: fromDate, to: date).day,
                let afterDay = Calendar.current.dateComponents([.day], from: date, to: toDate).day else { return }
            if beforeDay < afterDay {
                self.fromDate = date
            } else {
                self.toDate = date
            }
        }

        calendar.deselectAllDates(triggerSelectionDelegate: false)
        if let fromDate = self.fromDate, let toDate = self.toDate {
            calendar.selectDates(from: fromDate, to: toDate, triggerSelectionDelegate: false, keepSelectionIfMultiSelectionAllowed: true)
        }
    }

[patchthecode]

@Kevinw14
sorry for coming to this late.

There is range selection in the example project attached to this app.
Download it and tap on RangeSelection example.

Will close this, but let me know if youre still questioning this.

[deya-eldeen]

@LeeGwangYong : nice, but this looks like it has a bug when you click the final or first dates ... the middle dates get's unselected.