iOS Calendar Week/Day View in Swift

calendarWeekView.setupCalendar(numOfDays: 7,
                               setDate: Date(),
                               allEvents: JZWeekViewHelper.getIntraEventsByDate(originalEvents: events),
                               scrollType: .pageScroll,
                               firstDayOfWeek: .Monday)

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
    JZWeekViewHelper.viewTransitionHandler(to: size, weekView: calendarWeekView)
}

calendarWeekView.updateFlowLayout(JZWeekViewFlowLayout(hourHeight: 50, rowHeaderWidth: 50, columnHeaderHeight: 50, hourGridDivision: JZHourGridDivision.noneDiv))

override func registerViewClasses() {
    super.registerViewClasses()

    // Register CollectionViewCell
    self.collectionView.register(UINib(nibName: "EventCell", bundle: nil), forCellWithReuseIdentifier: "EventCell")

    // Register DecorationView: must provide corresponding JZDecorationViewKinds
    self.flowLayout.register(BlackGridLine.self, forDecorationViewOfKind: JZDecorationViewKinds.verticalGridline)
    self.flowLayout.register(BlackGridLine.self, forDecorationViewOfKind: JZDecorationViewKinds.horizontalGridline)

    // Register SupplementrayView: must override collectionView viewForSupplementaryElementOfKind
    collectionView.register(RowHeader.self, forSupplementaryViewOfKind: JZSupplementaryViewKinds.rowHeader, withReuseIdentifier: "RowHeader")
}

override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let date = flowLayout.dateForColumnHeader(at: indexPath)
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: EventCell.className, for: indexPath) as! EventCell
    cell.updateView(event: allEventsBySection[date]![indexPath.row] as! Event)
    return cell
}

public protocol JZLongPressViewDelegate: class {
    /// When addNew long press gesture ends, this function will be called.
    func weekView(_ weekView: JZLongPressWeekView, didEndAddNewLongPressAt startDate: Date)
    /// When Move long press gesture ends, this function will be called.
    func weekView(_ weekView: JZLongPressWeekView, editingEvent: JZBaseEvent, didEndMoveLongPressAt startDate: Date)
    /// Sometimes the longPress will be cancelled because some curtain reason.
    func weekView(_ weekView: JZLongPressWeekView, longPressType: JZLongPressWeekView.LongPressType, didCancelLongPressAt startDate: Date)
}

public protocol JZLongPressViewDataSource: class {
    /// Implement this function to customise your own AddNew longPressView
    func weekView(_ weekView: JZLongPressWeekView, viewForAddNewLongPressAt startDate: Date) -> UIView
    /// Implement this function to customise your own Move longPressView
    func weekView(_ weekView: JZLongPressWeekView, movingCell: UICollectionViewCell, viewForMoveLongPressAt startDate: Date) -> UIView
}

calendarWeekView.longPressDelegate = self
calendarWeekView.longPressDataSource = self
calendarWeekView.longPressTypes = [.addNew, .move]

// Optional
calendarWeekView.addNewDurationMins = 120
calendarWeekView.moveTimeMinInterval = 15

open class func getIntraEventsByDate<T: JZBaseEvent>(originalEvents: [T]) -> [Date: [T]]

pod 'JZCalendarWeekView', '~> 0.3'