Java.Lang.IllegalArgumentException:** 'Comparison method violates its general contract! is thrown when appointment source loads

For example, there are 33 appointments with the same start date and end date and 3 with a different start date and same end date as the other 33 appointments, all appointments are AllDay.
The exception is thrown on Android when loading the appointment source. It works fine on iOS and UWP.

Provide a way to highlight or identify the days with appointments in the year view mode. When in year view mode, those days with appointments, have different color for example.

Currently, just today is highlighted.

Expose an editing feature of the RadCalendar so that the users can hold a specific time slot and manually add an appointment or edit an already existing one.

Dear sir/madam,

Following a forum post discussion regarding the RadCalendar's time format in Day/MultiDay view modes, it has been said that its time format is set based on the device's settings, and is not changeable by the developer. So, please add this feature so that the developer can at least set the RadCalendar's time format to either 24 or 12-Hour formats, not only in Day/MultiDay view modes but on any view mode.

Many thanks in advance

When there are all-day appointments in the Calendar in DayView/MultiDayView,  after the device/emulator is rotated to a different orientation, the all day event are not resized in response to the wider/narrower day "column."

All-day area is misaligned when the device/emulator is rotated to a different orientation.

appointment color is not coming for ALL Day event in day or multi-day view.

Issue: 

https://docs.telerik.com/devtools/xamarin/controls/calendar/images/dayviews.png

 

Solution:

Use AppointmentTemplate https://docs.telerik.com/devtools/xamarin/controls/calendar/calendar-appointments#appointment-template

In a scenario where you are trying to set the AppointmentsSource of the RadCalendar in the OnAppearing event of the Page, a NullReferenceException is thrown in the Telerik.XamarinForms.InputRenderer.WinRT.CalendarAdapter UpdateAppointmentsSource method.

A workaround is to make the OnAppearing method async and await the action that sets the AppointmentSource.

If you set selected date range when the Calendar is loaded, the selection is not visualized.

Maybe I am over looking something, but I am unable to show the RadCalendar in the Agenda view mode with a dark background color. I have tried setting the background color of the RadCalendar to a dark color and the AgendaViewSettings only seem to allow me to set text colors and not the background. 

We use the control in three modes, DayView, MonthView and AgendaView and only in agenda we can't seem to change the background color.

The background color for appointments is no longer visible in agenda view on iOS (Property "Color" on Appointment). The color works on both Day, Month and Week views, but not Agenda view. But it works on Android. It's only on iOS there is no background color. This worked before the latest update (Release R3 2020, Version 2020.3.916.1).

Is there anything else that needs to be done, except setting the Color property of appointments?

"All day" translation in calendar - refer to the attached image

Currently the "from" and "to" strings related to appointment's StartDate and EndDate shown Inside the AppointmentSummaryView of the Scheduling UI cannot be translated.

Allow the customer to set "special" dates collection and provide different styling to/disable those dates.

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

Provide a way to modify the create/edit appointment screens, for example to include additional properties, to customize their look&feel,etc.

If you try to explicitly set the Locale property of the native CalendarView through a custom renderer, the change is not applied in AgendaView ( the same works properly in other views).

Hi,

The finnish translations are not correct in the calendar component. We would like to change the translations for names of days and month, in the calendar component. As far as we know, this is not possible. We can only change 4 texts (4 calendar views localization keys) according to this documentation: https://docs.telerik.com/devtools/xamarin/controls/calendar/calendar-localization

Localization works, and we can set the language. But for the finnish language, the translations you provide for days and months are not correct. We would like to be able to change these texts ourselves, name of days and months. Is there any way for us to do this? We need the Finnish translations to be correct.

 

Thank you!

 

Best Regards,

Joakim
joakim.w@digitalcreation.se

As of the R3 2019 Release of Telerik UI for Xamarin, Day View and Multi-Day View are the only two views where Appointments can have custom data templates.
This is done via setting Appointment Content Template to a template selector in the Day view or Multi-Day view settings object.
It would be useful to add Appointment Content Templates to the Agenda View, allowing for finer customization of the appointment. 
Similar to Day View and Multi-Day View, it could be set via AgendaViewSettings.
Agenda view has differing functionality from Day and MultiDay view which makes it better suited to certain user experiences, however it is currently limited and missing the same appointment customization options that the day and multi-day views allow.

When the calendar is in DayView mode and you tap on the 3rd of November, it incorrectly scrolls you back to the 27th of October. Another issue appears if you are on the 2nd and you try to swipe to the 3rd (by swiping the day area) - it does not allow you to do so.