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 android.graphics.Canvas.checkValidClipOp(Canvas.java:779)
[AndroidRuntime] at android.graphics.Canvas.clipRect(Canvas.java:826)
[AndroidRuntime] at com.telerik.widget.calendar.CalendarFragment.drawRows(CalendarFragment.java:589)
[AndroidRuntime] at com.telerik.widget.calendar.CalendarFragment.render(CalendarFragment.java:259)
[AndroidRuntime] at com.telerik.widget.calendar.CalendarScrollManager$FragmentHolder$LayerView.onDraw(CalendarScrollManager.java:136)
[AndroidRuntime] at android.view.View.draw(View.java:20207)
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.
The scenario in which the issue is reproducible is when one of the tabs of a RadTabView contains a RadSideDrawer. Switching the view a couple of times causes an exception to be thrown when trying to open the tab that contains the RadSideDrawer. The issue is reproducible in UWP and Android. Available in minor release 2018.1.0315. It will also be available in the R2 2018 release.
On Android, I am using a DataTemplateSelector and a DataTemplate that has a switch on it that the user can press. When the user presses the switch the ListView starts corrupting the data in the list. The item being interacting with starts appearing in other locations on the list.
This issue can be reproduced in the Telerik SDKBrowser project.
Select the following : ListView -> Cell Types -> Template Cell Selector - Xaml
Mark Item1 as special using the button. Scroll down and you will see that an item in the list has been replaced by Item 1 which is now in the list twice.
The RadCalendar DayView.EventView get stuck in a shifted position. This only occurs on iOS.
Steps to reproduce:
1. Load calendar.
2. Slowly slide the event view (lower portion) either right or left until the time labels (1am, 2am, etc.) are no longer in their starting positions.
3. Without releasing the scroll, tap the button to change the view to Month view mode.
4. Tap the button to change back to Day view mode.
5. Observe that the entire events view is still shifted and will remain so until the RadCalendar control is destroyed and a new one is created.
Attached are pictures showing the correct view and the incorrect view. Also, a sample project is attached that can be used to replicate this issue.
I have attempted to use a custom renderer to manually reset the events view, but nothing seems to work.
the following exceptions occur when upgrading to Xamarin.Forms v 4.0:
System.NotSupportedException: Unable to activate instance of type Telerik.XamarinForms.DataControlsRenderer.Android.ListView.TemplateCellContainer
System.NullReferenceException: Object reference not set to an instance of an object
Exception when SDK and User Assemblies are linked: Mono.Linker.MarkException
Exception when none are linked: System.TypeLoadException
this is list view with loadondemand active