In Xamarin Forms.

When I call Calendar.ScrollAppointmentIntoView(theItem); in Android it works fine.

In iOS when the same call is made, the calendar scrolls about 1 pixel, then stops.

I put the call into a timer just to make sure it's there.

      Device.StartTimer(TimeSpan.FromMilliseconds(3000), () =>    

              { Device.BeginInvokeOnMainThread(() => {  Calendar.ScrollAppointmentIntoView(theItem); });             

                 return false; // True = Repeat again, False = Stop the timer    

      });

Available in minor release 2018.1.0315. It will also be available in the R2 2018 release.

When RadCalendar is inside Xamarin Forms Tabbed Page. Switching between tabs triggers Calendar SelectionChanged and the calendar DisplayDate is changed. 

Workaround:
the issue could not be reproduced when RadTabView is used and its IsContentPreserved property is set to true.

Xamarin Forms, Newest everything

Out of the box, all Calendar views for iOS are in AM/PM

In Android the MultiDay is 24 hour, but the Day view is AM/PM

How can I force Android MultiDay to be AM/PM ?

SelectionChanged starts calling twice when appointments collection is changed at runtime from within the event.

The problem occurs when I update the Events property on either of the events DisplayDateChanged or SelectionChanged. It seems these events are triggered another time, sometimes, when the AppointmentSource gets refreshed. I say sometimes because you can navigate through the weeks as normal, but as some points you notice something went wrong. Here’s a list of what I have encountered so far :
When sliding through the weeks from the days header, let’s say the selected day is a Monday, the next weeks would have the Monday selected as expected. Then a random week would have an other selected day (Friday). It would happen randomly until some weeks get skipped completely.
When sliding through the weeks from the days header, let’s say the selected day is a Monday, the next weeks would have the Monday selected as expected. If I touch the Friday box,  the selected date gets initially updated  to Friday and then a random day between Monday and Friday gets selected.
When sliding through the weeks from the days header, the calendar gets stucked on a random week, and sliding forward or backward through the days header just put you back to the same week. In this case the only way to move to the next/previous week is to slide through the time slot.

Available in minor release 2017.2.0818. It will also be available in the R3 2017 release.

Available in minor release 2017.3.927. It will also be available in the R3 2017 SP release.

Hi!

I've tried your TKCalendar and it looks really good. But unfortunately, there is an issue on iOS(Xamarin). I set MaxDate = DateTime.Today and SelectionMode == Range. When I tap on date grater than today they don't selected, as expected. But when I select dates by drag gesture I can select every days in month.The worst thing is that it seems that there is no way to turn off drag selection on iOS in Range selection mode. I could provide you with any files if it's necessary. 

Available in the R3 2018 SP release.

Available in the 2018 R2 SP release.

set the MultiDayViewStyle (tried both in code and also in the xaml) and the Appointment settings don't seem to have any effect on Android.

Available in minor release 2018.1.405. It will also be available in the R2 2018 release.

If there is an all-day appointment at a certain date, navigating to a different date through the week navigation in DayView and going back to the previous date, it will not always show the all-day item.

System.ArgumentOutOfRangeException: Year, Month, and Day parameters describe an un-representable DateTime.

This issue happens when using DayView, MultiDayView, Month view modes and when scrolling through the calendar to change the selected date. 

The issue happens on specific devices with android 14, Pixel 7, Galaxy S22. 

Workaround: 
Setting the time zone in calendar renderer to the DayView timelabelformat

public override bool TrySetViewMode(CalendarViewMode view, bool isAnimated)
        {
            if (view == CalendarViewMode.Day)
            {
                Control.DayView.DayEventsViewStyle.TimeLabelFormat.TimeZone = Java.Util.TimeZone.GetTimeZone("add time zone here");
            }

            return base.TrySetViewMode(view, isAnimated);
        }

when setting Flow view mode to the RadCalendar control, the UI freeze. 
The Flow mode is set using a custom renderer on iOS.

1.Start a swipe gesture to the right (as like when you navigate to next three days) but stop it by return your finger back (holding the finger on the screen);
2. Since the gesture was canceled, you stay at 15th to 17th of July;
3.. Tap on some event to open it on other screen. Then come back to the calendar;
4.. Now you see other dates on the calendar, less than before, somewhat like 11th to 14th or 8th to 10th. Each time when you open other screen, calendar changes its displayed date. To cancel this behavior do new navigation swipe gesture.

Workaround:  get the DisplayDate before the navigation and set it when navigating back