Duplicated
Last Updated: 30 Mar 2020 07:48 by ADMIN
Created by: Jag
Comments: 1
Category: UI for Xamarin
Type: Bug Report
0

In the SearchViewSingleLineItems Telerik template, it places a RadListView in an auto-sized RowDefinition. As a result, this causes the RadListView not to appear on iOS. This should be a star-sized row as mentioned in this UI for Xamarin documentation.

Although unrelated to the issue, the deprecated RadAutoComplete is being used for the example. Please update it to use the new RadAutoCompleteView instead.

Please update this template (and any other search templates that might have the same issues), thank you.

Declined
Last Updated: 27 Mar 2020 11:13 by ADMIN

I have upgraded my Xamarin.Forms to version 4.5 and installed the dependent AndroidX nuget packages.  After upgrading UI for Xamarin to version 2020.1.318.1, I'm getting 3 errors below in my Xamarin Android project that seems to have to do with min SDK version when I try to build:

java/lang/String;Ljava/util/List;)[B :  invalid opcode ba - invokedynamic requires --min-sdk-version >= 26 (currently 13) 

com.android.dx.cf.code.SimException: ERROR in androidx.browser.customtabs.CustomTabsService$1.newSessionInternal:(Landroid/support/customtabs/ICustomTabsCallback;Landroid/app/PendingIntent;)Z: invalid opcode ba - invokedynamic requires --min-sdk-version >= 26 (currently 13)

com.android.dx.cf.code.SimException: ERROR in androidx.browser.trusted.ConnectionHolder.getServiceWrapper:()Lcom/google/common/util/concurrent/ListenableFuture;: invalid opcode ba - invokedynamic requires --min-sdk-version >= 26 (currently 13) 


I'm targeting Android 9 and set the minimum supported SDK to 26.  The error hasn't gone away.

I upgraded to latest Telerik to address a reference issue with AndroidX.RecyclerView but it seems that these new errors are showing up now. 

Is there something I can do to resolve the error or do I just have to wait for the next Telerik UI for Xamarin release?

 

In Development
Last Updated: 20 Mar 2020 17:10 by ADMIN
Created by: Yana
Comments: 3
Category: UI for Xamarin
Type: Feature Request
18
Applications that are built with AndroidX are currently not supported.
Completed
Last Updated: 20 Mar 2020 15:04 by ADMIN
Release 2020.1.313 (R1 2020 minor release)
Created by: Marc
Comments: 7
Category: UI for Xamarin
Type: Feature Request
7

April 2020 Deadline

Apple will no longer accept applications published with anything less than Xamarin.Forms 4.5 after April 2020.

This is due to the UIWebView flag that is in Xamarin.Forms 4.4 and earlier

ITMS-90809: Deprecated API Usage- Apple will stop accepting submissions of apps that use UIWebView APIs starting from April 2020 . 

 

Solution

Please visit this documentation for full explanation. Just to share the highlights, Telerik UI for Xamarin will need to:

  • Xamarin.Forms 4.5 or higher – Pre-release versions of Xamarin.Forms 4.5 can be used.
  • Xamarin.iOS 13.10.0.17 or higher – Check your Xamarin.iOS version in Visual Studio. This version of Xamarin.iOS is included with Visual Studio for Mac 8.4.1 and Visual Studio 16.4.3.
  • Remove references to UIWebView – Your code should not have any references to UIWebView or any classes that make use of UIWebView.
Completed
Last Updated: 20 Mar 2020 13:25 by ADMIN
Release 2020.1.313 (R1 2020 minor release)

Since 2020.1.218 the NuGet package for UWP Apps doesn't work, it references files that are not found during build.

 

//

Declined
Last Updated: 19 Mar 2020 10:15 by ADMIN
Created by: Nadya
Comments: 9
Category: UI for Xamarin
Type: Bug Report
6

If you have a project that has a dependency on: Xamarin.AndroidX.RecyclerView

It will cause a Release build failure due to Telerik.XamarinForms.DataControls using the wrong type in the renderer (AndroidX's RecyclerView instead of v7.Widgets's RecyclerView).

Here is the build error clarifying that it cannot find a `HasStableIds` property/method:

Error Mono.Linker.MarkException: Error processing method: 'System.Void Telerik.XamarinForms.DataControlsRenderer.Android.ItemsControlRenderer::OnElementAttached(Telerik.XamarinForms.DataControls.ItemsControl)' in assembly: 'Telerik.XamarinForms.DataControls.dll' ---> Mono.Cecil.ResolutionException: Failed to resolve System.Void AndroidX.RecyclerView.Widget.RecyclerView/Adapter::set_HasStableIds(System.Boolean)

Reproduce

You can use the attached project to reproduce the problem. Be sure to have the following settings:

  • Build in Release configuration
  • Set LinkerBehavior to SDK assemblies Only

Workaround

Uninstall Xamarin.AndroidX.RecyclerView

Unplanned
Last Updated: 19 Mar 2020 09:49 by ADMIN
If DataGrid is placed inside Grid Row with "*" Height inside RadPopup, the layout of the control is broken when user enters edit mode.  As soon as the keyboard is shown, the DataGrid disappear.
Unplanned
Last Updated: 11 Mar 2020 15:38 by ADMIN
Created by: Luiz
Comments: 13
Category: UI for Xamarin
Type: Feature Request
33
xamarin forms on wpf is now official, https://docs.microsoft.com/en-us/xamarin/xamarin-forms/platform/wpf
we need to support telerik on there aswell..
Duplicated
Last Updated: 10 Mar 2020 14:20 by ADMIN
Created by: Olivier
Comments: 1
Category: UI for Xamarin
Type: Feature Request
1

Hello,

We are using Xamarin Forms and Telerik for iOS and Android.

We were asked several months ago to host our Xamarin Forms app on WPF.

Currently, SyncFusion is the only one to support WPF.

Will Telerik support WPF for Xamarin Forms someday ? Do you have any idea when ?

If you won't support it, I will be obliged to move to SyncFusion (WPF will be mandatory soon as we will migrate our WPF app on Xamarin : a merge of our products and our dev team)

We have both Telerik and SyncFusion. We decided to use Telerik for 95% of our controls (except the ListView where SyncFusion got more advanced features).
We prefer to stay on Telerik for as long as we can but won't have other choice to migrate to SyncFusion if Telerik will never provide WPF controls for Xamarin Forms.

Thanks a lot

Under Review
Last Updated: 06 Mar 2020 16:41 by Mike
Created by: Francisco Manuel
Comments: 2
Category: UI for Xamarin
Type: Feature Request
4

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 

Pending Review
Last Updated: 22 Jan 2020 22:14 by ADMIN
Created by: Rajendra
Comments: 5
Category: UI for Xamarin
Type: Bug Report
2
Hi Team,

I implemented radcheckbox in my xamarin telerik application. In which i select checkbox and afterword i post some data through webAPI. After completion of posting data i got response from server and my app got crashed and show me following stack trace data,

  at Telerik.XamarinForms.PrimitivesRenderer.iOS.CheckBoxRenderer.OnElementDetached (Telerik.XamarinForms.Primitives.RadCheckBox oldElement) [0x00025] in <f3723b4c1d3f406496717d69142c8f84>:0 

  at Telerik.XamarinForms.Common.iOS.IosRendererBase`2[S,T].Dispose (System.Boolean disposing) [0x0001f] in <81c15264f2164ef79a02e84ed79e8bfd>:0 

  at Foundation.NSObject.Dispose () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.14.0.114/src/Xamarin.iOS/Foundation/NSObject2.cs:147 

  at Xamarin.Forms.Platform.iOS.VisualElementPackager.Dispose (System.Boolean disposing) [0x0003f] in <612eab01c6f546df983c0637f996b4cd>:0 

  at Xamarin.Forms.Platform.iOS.VisualElementPackager.Dispose () [0x00000] in <612eab01c6f546df983c0637f996b4cd>:0 

  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].Dispose (System.Boolean disposing) [0x00058] in <612eab01c6f546df983c0637f996b4cd>:0 

  at Foundation.NSObject.Dispose () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.14.0.114/src/Xamarin.iOS/Foundation/NSObject2.cs:147 

  at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildRemoved (Xamarin.Forms.VisualElement view) [0x0003e] in <612eab01c6f546df983c0637f996b4cd>:0 

  at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildRemoved (System.Object sender, Xamarin.Forms.ElementEventArgs e) [0x0000f] in <612eab01c6f546df983c0637f996b4cd>:0 

  at Xamarin.Forms.Element.OnChildRemoved (Xamarin.Forms.Element child) [0x00007] in D:\a\1\s\Xamarin.Forms.Core\Element.cs:343 

  at Xamarin.Forms.VisualElement.OnChildRemoved (Xamarin.Forms.Element child) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\VisualElement.cs:750 

  at Xamarin.Forms.Layout`1[T].OnChildRemoved (Xamarin.Forms.Element child) [0x00000] in <4542de7f0f544d51b46d63bd15d5f6b5>:0 

  at Xamarin.Forms.Layout.OnInternalRemoved (Xamarin.Forms.View view) [0x00012] in D:\a\1\s\Xamarin.Forms.Core\Layout.cs:464 

  at Xamarin.Forms.Layout.InternalChildrenOnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x0002b] in D:\a\1\s\Xamarin.Forms.Core\Layout.cs:427 

  at (wrapper delegate-invoke) <Module>.invoke_void_object_NotifyCollectionChangedEventArgs(object,System.Collections.Specialized.NotifyCollectionChangedEventArgs)

  at System.Collections.ObjectModel.ObservableCollection`1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00018] in <a1ab7fc4639d4d84af41d68234158b1c>:0 

  at System.Collections.ObjectModel.ObservableCollection`1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedAction action, System.Object item, System.Int32 index) [0x00009] in <a1ab7fc4639d4d84af41d68234158b1c>:0 

  at System.Collections.ObjectModel.ObservableCollection`1[T].RemoveItem (System.Int32 index) [0x00021] in <a1ab7fc4639d4d84af41d68234158b1c>:0 

  at System.Collections.ObjectModel.Collection`1[T].Remove (T item) [0x00027] in <939d99b14d934342858948926287beba>:0 

  at Xamarin.Forms.Layout.OnInternalAdded (Xamarin.Forms.View view) [0x0000b] in D:\a\1\s\Xamarin.Forms.Core\Layout.cs:451 

  at Xamarin.Forms.Layout.InternalChildrenOnCollectionChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00078] in D:\a\1\s\Xamarin.Forms.Core\Layout.cs:443 

  at (wrapper delegate-invoke) <Module>.invoke_void_object_NotifyCollectionChangedEventArgs(object,System.Collections.Specialized.NotifyCollectionChangedEventArgs)

  at System.Collections.ObjectModel.ObservableCollection`1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00018] in <a1ab7fc4639d4d84af41d68234158b1c>:0 

  at System.Collections.ObjectModel.ObservableCollection`1[T].OnCollectionChanged (System.Collections.Specialized.NotifyCollectionChangedAction action, System.Object item, System.Int32 index) [0x00009] in <a1ab7fc4639d4d84af41d68234158b1c>:0 

 

My xaml code,

<telerikControls:RadCheckBox IsChecked="{Binding IsSelected, Mode=TwoWay}" HorizontalOptions="Center" VerticalOptions="Center" />

 

My model class code,

private bool _isSelected;
        public bool IsSelected
        {
            get { return _isSelected; }
            set
            {
                _isSelected = value;
            }
        } 

Version information,

Xmarin form version : 4.1.0

Telerik UI version : 2019.2.802.1

iOS version 12.2

Completed
Last Updated: 20 Jan 2020 15:15 by ADMIN
Release R1 2020
ADMIN
Created by: Tsvyatko
Comments: 6
Category: UI for Xamarin
Type: Feature Request
14

			
Unplanned
Last Updated: 20 Jan 2020 09:44 by ADMIN
Created by: Safan
Comments: 0
Category: UI for Xamarin
Type: Feature Request
3
Support selecting multiple values from given options
Completed
Last Updated: 15 Jan 2020 12:11 by ADMIN
Release R1 2020
Created by: Greg
Comments: 5
Category: UI for Xamarin
Type: Feature Request
17
Add controls to selecting dates/times that also support null or blank values.  Currently the DatePicker control that is provided as part of Xamarin Forms doesn't allow for a null or blank date.
Provide the ability to select date and time in single UI.
Unplanned
Last Updated: 19 Dec 2019 13:23 by ADMIN

When using the __ItemStyle properties of RadListView, they are not being applied if the SelectionMode is set to None. It makes sense that the PressedItemStyle and SelectedItemStyle properties are not used, since they are not applicable if nothing can be selected. However, the ReorderItemStyle in particular should still be used.

 

Example:

    public class ItemStyleNotAppliedExample : ContentPage
    {
        private readonly ListViewItemStyle WhiteBG = new ListViewItemStyle
        {
            BackgroundColor = Color.White
        };

        private readonly ListViewItemStyle YellowBG = new ListViewItemStyle
        {
            BackgroundColor = Color.Yellow
        };

        private readonly ListViewItemStyle RedBG = new ListViewItemStyle
        {
            BackgroundColor = Color.Red
        };

        private readonly ListViewItemStyle BlueBG = new ListViewItemStyle
        {
            BackgroundColor = Color.Blue
        };

        public ItemStyleNotAppliedExample()
        {
            BackgroundColor = Color.Gray;

            var items = new ObservableCollection<Item>
            {
                new Item("Item 1"),
                new Item("Item 2"),
                new Item("Item 3"),
                new Item("Item 4"),
                new Item("Item 5"),
            };

            Content = new RadListView
            {
                SelectionMode = SelectionMode.None,
                IsItemsReorderEnabled = true,
                ItemsSource = items,
                ItemTemplate = new DataTemplate(typeof(ItemView)),

                ItemStyle = WhiteBG,
                PressedItemStyle = YellowBG,
                SelectedItemStyle = RedBG,
                ReorderItemStyle = BlueBG,
            };
        }

        private class Item
        {
            public string Name { get; }

            public Item(string name)
            {
                Name = name;
            }
        }

        private class ItemView : ListViewTemplateCell
        {
            public ItemView()
            {
                var checkbox = new CheckBox
                {
                    VerticalOptions = LayoutOptions.Center
                };

                var label = new Label
                {
                    VerticalOptions = LayoutOptions.Center
                };

                label.SetBinding(Label.TextProperty, nameof(Item.Name));

                View = new StackLayout
                {
                    BackgroundColor = Color.Transparent,
                    Orientation = StackOrientation.Horizontal,
                    Children =
                    {
                        checkbox,
                        label
                    }
                };
            }
        }
    }

Unplanned
Last Updated: 16 Dec 2019 09:34 by ADMIN
ADMIN
Created by: Stefan Nenchev
Comments: 4
Category: UI for Xamarin
Type: Feature Request
7
We should consider splitting the Telerik.Xamarin.iOS.dll into separate DLLs so that the customers can reference only the controls they need.
Unplanned
Last Updated: 13 Dec 2019 14:32 by ADMIN
add option to visualize items as a drop-down list.
Unplanned
Last Updated: 11 Dec 2019 08:31 by ADMIN
Created by: john
Comments: 10
Category: UI for Xamarin
Type: Feature Request
26
In Xamarin Forms there is a serious need for a Rich Text Editor control that would allow you to do this such as highlight text, apply fonts, styles etc. I think a tool like this is in great demand among Xamarin developers. Currently there are some Open source controls that have implemented these features however they have not been maintained and cannot be relied on for enterprise solutions
Unplanned
Last Updated: 06 Dec 2019 11:37 by ADMIN
When arrows are expanded ( in horizontal position ) a part of them is cut off on UWP
Unplanned
Last Updated: 04 Dec 2019 15:32 by ADMIN

When you have a page with RadCalendar and DayViewSettings properties are data-bound, navigating back in Prism raises a "Cannot destroy page" exception.

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