Calendar: [iOS] NSInternalInconsistencyException is thrown when DisplayDate is set to future date

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Unplanned

Last Updated: 20 Jul 2024 13:54 by yuri

Dinesh

Created on: 05 Mar 2024 09:07

Category: Calendar & Scheduling

Type: Bug Report

Calendar: [iOS] NSInternalInconsistencyException is thrown when DisplayDate is set to future date

In the RadCalendar, if we set the DisplayDate to future date (For example, current date is 04-03-2024 and the display date as 08-April-2024), application gets crashed in iOS platform. This issue occurs only in iOS 17 and above versions.

Exception

NSInternalInconsistencyException Reason: UIGraphicsBeginImageContext() failed to allocate CGBitampContext: size={0, 0}

3 comments

yuri

Posted on: 20 Jul 2024 13:54

I understood. Full code for workaround:

public class LocaleCalendarRenderer : CalendarRenderer
{
protected override TKExtendedCalendar CreateNativeControl()
{
return new CustomTKExtendedCalendar();
}
}

public class CustomTKExtendedCalendar : TKExtendedCalendar
{
private bool _initialNavigateToDate = true;

public override void NavigateToDate(NSDate date, bool animated)
{
base.NavigateToDate(date, animated: !_initialNavigateToDate && animated);
_initialNavigateToDate = false;
}
}

yuri

Posted on: 20 Jul 2024 12:50

Thanks, Evan

Can you provide full code with this solution? Don't understand point 2 :(

Evan

Posted on: 08 Jul 2024 18:46

Workaround: create a custom renderer.

Subclass Telerik.XamarinForms.InputRenderer.iOS.CalendarRenderer and export the renderer.
Override CalendarRenderer.CreateNativeControl to return a custom subclass of TKExtendedCalendar.
Override TKExtendedCalendar.NavigateToDate:

// disables animation on initial date navigation (which occurs on initial render)
// the animation takes a screenshot/capture of the UIView using a graphics context with size zero, which is no longer allowed in iOS 17
private bool _initialNavigateToDate = true;
public override void NavigateToDate(NSDate date, bool animated)
{
    base.NavigateToDate(date, animated: !_initialNavigateToDate && animated);
    _initialNavigateToDate = false;
}