Foundation.MonoTouchException
  Message=Objective-C exception thrown.  Name: NSInternalInconsistencyException Reason: Expected dequeued view to be returned to the collection view in preparation for display. When the collection view's data source is asked to provide a view for a given index path, ensure that a single view is dequeued and returned to the collection view. Avoid dequeuing views without a request from the collection view. For retrieving an existing view in the collection view, use -[UICollectionView cellForItemAtIndexPath:] or -[UICollectionView supplementaryViewForElementKind:atIndexPath:]. Dequeued view: <Telerik_XamarinForms_DataControlsRenderer_iOS_ListView_UIListViewGroupHeaderCell: 0x7f9abcf816d0; baseClass = UICollectionViewCell; frame = (0 0; 402 684.667); alpha = 0; gestureRecognizers = <NSArray: 0x6000013bdbb0>; backgroundColor = <UIDynamicProviderColor: 0x600005bfa0c0; provider = <__NSMallocBlock__: 0x600001f18600>>; layer = <CALayer: 0x6000058a3140>>; Collection view: <TKCollectionView: 0x7f9ab9841000; baseClass = UICollectionView; frame = (0 0; 402 684.667); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x600001ca79c0>; backgroundColor = UIExtendedGrayColorSpace 0 0; layer = <CALayer: 0x600005a0cbc0>; contentOffset: {0, 0}; contentSize: {402, 646.33333333333326}; adjustedContentInset: {0, 0, 0, 0}; layout: <TKListViewLinearLayout: 0x7f9abe069fa0>; dataSource: <Telerik_XamarinForms_DataControlsRenderer_iOS_TKExtendedListView: 0x7f9ab7908580; frame = (0 0; 402 684.667); backgroundColor = UIExtendedSRGBColorSpace 1 1 1 1; layer = <CALayer: 0x60000180dae0>>>
Native stack trace:
0   CoreFoundation                      0x000000010d06d369 __exceptionPreprocess + 242
1   libobjc.A.dylib                     0x0000000117eb4106 objc_exception_throw + 62
2   Foundation                          0x000000011a8c56a8 _userInfoForFileAndLine + 0
3   UIKitCore                           0x00000001479bcb16 __43-[UICollectionView _updateVisibleCellsNow:]_block_invoke.1279 + 164
4   UIKitCore                           0x0000000148603c7f -[_UICollectionViewSubviewManager removeAllDequeuedViewsWithEnumerator:] + 256
5   UIKitCore                           0x00000001479bc46b -[UICollectionView _updateVisibleCellsNow:] + 5618
6   UIKitCore                           0x00000001479bc530 -[UICollectionView _updateVisibleCellsNow:] + 5815
7   UIKitCore                           0x00000001479c351d -[UICollectionView layoutSubviews] + 352
8   ClickOnCommunityApp.iOS             0x0000000102956cc3 -[TKCollectionView layoutSubviews] + 51
9   UIKitCore                           0x0000000148d6364f -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2742
10  QuartzCore                          0x000000011dc8aec7 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 525
11  QuartzCore                          0x000000011dc971a3 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 67
12  QuartzCore                          0x000000011dbaf2f1 _ZN2CA7Context18commit_transactionEPNS_11TransactionEdPd + 731
13  QuartzCore                          0x000000011dbe9b1a _ZN2CA11Transaction6commitEv + 728
14  QuartzCore                          0x000000011dbeb06e _ZN2CA11Transaction25flush_as_runloop_observerEb + 60
15  UIKitCore                           0x000000014860b3fe _UIApplicationFlushCATransaction + 57
16  UIKitCore                           0x00000001484f2d42 __setupUpdateSequence_block_invoke_2 + 437
17  UIKitCore                           0x00000001477b738c _UIUpdateSequenceRun + 55
18  UIKitCore                           0x00000001484f267f schedulerStepScheduledMainSection + 165
19  UIKitCore                           0x00000001484f17a4 runloopSourceCallback + 68
20  CoreFoundation                      0x000000010cfcc91e __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
21  CoreFoundation                      0x000000010cfcc860 __CFRunLoopDoSource0 + 157
22  CoreFoundation                      0x000000010cfcc065 __CFRunLoopDoSources0 + 203
23  CoreFoundation                      0x000000010cfc6774 __CFRunLoopRun + 960
24  CoreFoundation                      0x000000010cfc5fb3 CFRunLoopRunSpecific + 536
25  GraphicsServices                    0x00000001335f80cb GSEventRunModal + 137
26  UIKitCore                           0x000000014860cc3b -[UIApplication _run] + 875
27  UIKitCore                           0x0000000148611b7c UIApplicationMain + 123
28  ClickOnCommunityApp.iOS             0x0000000102f42c6a xamarin_UIApplicationMain + 58
29  ???                                 0x000000019d15febe 0x0 + 6930431678
On iOS 18.0 Grouped listview crash

  Source=Xamarin.iOS
  StackTrace:
  at ObjCRuntime.Runtime.ThrowNSException (System.IntPtr ns_exception) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/16.4.0.23/src/Xamarin.iOS/ObjCRuntime/Runtime.cs:459 
  at ObjCRuntime.Runtime.throw_ns_exception (System.IntPtr exc) [0x00000] in /Users/builder/azdo/_work/1/s/xamarin-macios/runtime/Delegates.generated.cs:277 
  at (wrapper native-to-managed) ObjCRuntime.Runtime.throw_ns_exception(intptr)
  at (wrapper managed-to-native) UIKit.UIApplication.xamarin_UIApplicationMain(int,intptr,intptr,intptr,intptr&)
  at UIKit.UIApplication.UIApplicationMain (System.Int32 argc, System.String[] argv, System.IntPtr principalClassName, System.IntPtr delegateClassName) [0x00008] in /Library/Frameworks/Xamarin.iOS.framework/Versions/16.4.0.23/src/Xamarin.iOS/UIKit/UIApplication.cs:58 
  at UIKit.UIApplication.Main (System.String[] args, System.Type principalClass, System.Type delegateClass) [0x0003b] in /Library/Frameworks/Xamarin.iOS.framework/Versions/16.4.0.23/src/Xamarin.iOS/UIKit/UIApplication.cs:94 
  at ClickOnCommunityApp.iOS.Application.Main (System.String[] args) [0x00007] in C:\Sources\ClickOn\MobileCommunityGIT\ClickOnCommunityApp\ClickOnCommunityApp\ClickOnCommunityApp.iOS\Main.cs:13 

When the Telerik Xamarin toolbox is in a partial-height tab (i.e. half the height), there isn't a scrollbar to see the off-screen controls.

Workaround: 
Make the toolbox full height of the tab to see all the controls. Here's a video demonstrating https://www.screencast.com/t/cUjIC0sx4 

Hello,

I'd been testing the trial version of the Telerik chart control for Xamarin in an Android app. Because it was working well, I'd purchased a license yesterday. And, I replaced the NuGet trial package with the license package. So far, so good.

However, now, when I try to build the project, it fails. (I've tried building both the Release and Debug version.)

The errors I see are below:

Severity Code Description Project File Line Suppression State
Error failed linking references. Ble.Client.Android
Error resource style/MainTheme.Base (aka com.companyname.ble.client:style/MainTheme.Base) not found. Ble.Client.Android
ErrorNU1301       Failed to retrieve information about 'Xamarin.AndroidX.AppCompat' from remote source 'https://packagesource/FindPackagesById()?id='Xamarin.AndroidX.AppCompat'&semVerLevel=2.0.0'. Ble.Client.Android D:\2023_devwork\BLE_Xamarin\XamarinBleCodeBehind-main\XamarinBleCodeBehind-main\Ble.Client\Ble.Client.Android\Ble.Client.Android.csproj 1

Any thoughts as to what might have broken, and, what I need to do in order to resolve the issue? (In case it helps, I'm including a screen capture of the Visual Studio 2022 output window.)

Thanks!

--Donn Morse

               

The scrollbar on UWP is blocking the content (including the options button which is also not clickable because of it

Workaround: Add a style for the column header and apply margin to the Options button:

 

 

 

 

The ability to drag and drop items within the same TreeView as well as to another TreeView instance.

Add a Map control to the product suite.

Telerik.UI.for.Xamarin NuGet package is missing Telerik.UI.for.Xamarin.Documents.Fixed.FormatProviders.Image.Skia package reference.

Some cultures have Monday as a first day of week. When device language and culture change, the RadCalendar first day of week remains Sunday, not Monday. 
There is an inconsistence in the behavior. Android Calendar changes the day to Monday. iOS not. 

Having a ComboBox inside the RadListView ItemTemplate. 

Binding the ComboBox SelectedItems. 
On UWP when PropertyChanged is called on an item in the ListView, it fires the ComboBox SelectedItems CollectionChanged with action Remove, which is wrong behavior. And as a result the ComboBox SelectedItems collection is cleared. 

On Android an iOS works as expected, the ComboBox SelectedItems collection is not cleared. 

Unable to deploy Xamarin app with Telerik Document Processing dlls when AOT is true in Release configuration.

An error with text like is displayed in Visual Studio:

XABLD7028: System.IO.FileNotFoundException: Could not find file '...\....Droid\obj\Release\120\aot\armeabi-v7a\libaot-Telerik.Documents.Fixed.dll.so'

 

Do you have plans to develop controls for the UNO platform?

 

There are other companies that have already stated that they are working on it, for example,  

https://www.syncfusion.com/blogs/post/collaboration-syncfusion-uno-platform.aspx 

The value of DisplayedTextFontSize is not respected when DisplayedTextFont is set on iOS.

For SelectionMode = Miultiple, we need SelectedItems property to be bound to the VM collection to get the selection items, however, when i am using the control, I am not able to find SelectedItems property for RadComboBox. Am i missing something?

LongPress is called on element that is already disposed. 

ObjectDisposedException is thrown:

at Telerik.XamarinForms.Common.NativeGestureRecognizer.ToDip
 at Telerik.XamarinForms.Common.GestureListener.OnLongPress

Stack-Trace

 

The issue occurs on the following device:

Android: 12
Manufacturer: samsung
Model: SM-G970U

When building against XF5 and after migrating a project you can get the following error:-

Severity Code Description Project File Line Suppression State
Error failed linking file resources. App1.Android
Error '5dp' is incompatible with attribute verticalOffset (attr) float [weak]. App1.Android
Error '10dp' is incompatible with attribute horizontalOffset (attr) float [weak]. App1.Android

It appears to be a conflict between

    <PackageReferenceInclude="Xamarin.Google.Android.Material"Version="1.2.1.1" />
and Telerik assemblies.
If a dummy app is built with that Nuget it all works fine until the Nuget
<PackageReference Include="Telerik.UI.for.Xamarin" Version="2021.1.119.1" />
is added.
So you can have one or the other but not both.
Please see this GitHub thread where its discussed more and a sample app is posted. 
(I am user Gmotagi in it)
https://github.com/xamarin/Xamarin.Forms/issues/13303
 
 
 
  

 

Barcode reader which can scan a barcode and input it in an entry.

DataBindingComplete event of the DataGrid should be fired when the associated data (ItemsSource) has been successfully bound to the control or any data operation like Group, Sort or Filter is applied.  Currently the event handler is not called as expected.

 

RdBusyIndicator BusyContent data binding does not work. If a string constant is assigned to the     

 

     <telerik:RadBusyIndicator
                HorizontalOptions="FillAndExpand"
                VerticalOptions="FillAndExpand"
                IsBusy="{Binding IsBusy}"
                IsVisible="{Binding IsBusy}"
                AnimationContentHeightRequest="60"
                AnimationContentWidthRequest="60"
                AnimationType="Animation3"
                AnimationContentColor="{DynamicResource BrandPrimaryColor}">
                <telerik:RadBusyIndicator.BusyContent>
                    <Label Text="{Binding BusyContent}" HorizontalOptions="Center"/>
                </telerik:RadBusyIndicator.BusyContent>
      </telerik:RadBusyIndicator>

 

RdBusyIndicator BusyContent data binding does not work for the above Label inside the "telerik:RadBusyIndicator.BusyContent". If a string constant is assigned to the Text(for example "Loading..."), then it works perfectly.

The view model 100% has the property "BusyContent" with a value. By the way, the IsBusy and IsVisible data binding work fine.   

Add linear progress bar which indicates the progress of a task.