Last Updated: 05 Dec 2019 13:04 by ADMIN
Release R2 2019 SP1
Created on: 05 Jun 2019 13:24
Category: Calendar & Scheduling
Type: Bug Report
Calendar: [Android] Exception is thrown when inline appointments are shown on Api 28

Region.Op.REPLACE is deprecated and therefore the exception is thrown:

[AndroidRuntime] java.lang.IllegalArgumentException: Invalid Region.Op - only INTERSECT and DIFFERENCE are allowed
[AndroidRuntime] at
[AndroidRuntime] at
[AndroidRuntime] at com.telerik.widget.calendar.CalendarFragment.drawRows(
[AndroidRuntime] at com.telerik.widget.calendar.CalendarFragment.render(
[AndroidRuntime] at com.telerik.widget.calendar.CalendarScrollManager$FragmentHolder$LayerView.onDraw(
[AndroidRuntime] at android.view.View.draw(

Posted on: 05 Dec 2019 13:04

Hi Soufiane,

Could you please open a support ticket for the issue with the RadCalendar appearing? I am asking about this as this Feedback item is closed and the issue related to it is fixed.

Thank you for the understanding.

Progress Telerik

Posted on: 05 Dec 2019 12:29

Thank you i upgrade my Ui for Xamarin into the last version and i was forced to upgrade also Xamarin.forms from version 2.4. to 4.1  the probleme is that my Telerik calendar won't show after the nuget update 


Lance | Manager Technical Support
Posted on: 03 Dec 2019 15:14

Hi Soufiane,

The fix was released in UI for Xamarin R2 2019 SP1 (2019.2.619), you'll need to update to at least that version to get the fix.

Here's a screenshot to show you how you can tell when a fix was released:

See the full history here: UI for Xamarin Release History

Lance | Team Lead - US DevTools Support
Progress Telerik

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal and vote to affect the priority of the items
Posted on: 03 Dec 2019 12:13

Hello did you find what the probleme please i have the same issue.


Thank you