Questions on UI for Xamarin Forum

1 answer

352 views

Hi Support,

We are currently evaluating Telerik UI for Xamarin. The component we are thinking of using heavily is Accordion Control.

Can you please provide an example on how to add multiple items dynamically to the Accordion?

All the example I found seems to be using XAML with hardcoded items.

Thanks.

Regards,

Andrew

Accordion

answered on 19 Feb 2021

3 answers

136 views

ItemSwipeContentTemplate is not animating out on swipe out

When trying to swipe on iOS a drawer with row options, the items appear, but there is no animation, the moment we start swiping the items just appear as if hiding and unhiding

<telerikDataControls:RadListView

x:Name="SongList"

Grid.Row="1"

Margin="20,0,0,0"

BackgroundColor="Transparent"

IsItemSwipeEnabled="{Binding SongManagementViewModel.SwipeEnabled}"

IsPullToRefreshEnabled="{OnPlatform Android=true,

iOS=true,

UWP=false}"

IsVisible="{Binding ImportedIsVisible, Converter={StaticResource InverseBoolConverter}, FallbackValue=true}"

ItemTapped="SongList_OnItemTapped"

ItemsSource="{Binding SongManagementViewModel.Songs}"

RefreshRequested="SongList_OnRefreshRequested"

SelectionMode="Single"

SwipeOffset="0, 0, 230, 0"

VerticalOptions="FillAndExpand">

<telerikDataControls:RadListView.ItemSwipeContentTemplate>

<DataTemplate>

<Grid

Margin="0"

Padding="0"

ColumnSpacing="0"

RowSpacing="0">

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*" />

<ColumnDefinition Width="Auto" />

</Grid.ColumnDefinitions>

<Button

Grid.Column="1"

BackgroundColor="{x:Static forms:Colors.MedBlue}"

Command="{Binding InfoCommand}"

Style="{StaticResource SlideOutOption}"

Text="Info" />

<Button

Grid.Column="2"

BackgroundColor="Black"

Command="{Binding AddToCommand}"

Style="{StaticResource SlideOutOption}"

Text="Add" />

<buttons:WordWrapButton

Grid.Column="3"

BackgroundColor="{Binding SongActionButtonColor}"

Command="{Binding SongActionCommand}"

Style="{StaticResource WordWrapSlideOutOption}"

Text="{Binding SongActionLabel}"

WidthRequest="{Binding SongActionButtonSize}" />

</Grid>

</DataTemplate>

</telerikDataControls:RadListView.ItemSwipeContentTemplate>

ListView

answered on 12 Feb 2021

7 answers

225 views

DataForm PickerEditor

Hi, I have a problem,

public class FruitModel
{
public int fruit{ get; set; }
public string fruitName{ get; set; }
}

ObservableCollection<FruitModel> FruitData = newObservableCollection<FruitModel>();
FruitData.Add(new FruitModel {fruidID = 1, fruidName ="Banana" }); .........................................

How can i show fruit in the DataForm PickerEditor?

DataForm

answered on 12 Feb 2021

7 answers

192 views

ERP Sample Application Problem

I have downloaded the sample code, and followed the instructions laid out here:

https://github.com/telerik/telerik-xamarin-forms-samples/tree/master/ERP

I have successfully published the service app, and am able to browse to the url just fine. Additionally, I can see the SQL objects and data got created in the sample database. I updated the web.config with the Azure SQL Connection info

I have updated the constants.cs file in the ErpApp solution with the URL from the Azure app service as well.

However, when I launch the app from debug in VS 2019, all the tabs in the mobile app spin for a few seconds, and then bring up empty screens, almost like there's no data to connect to, or some kind of permissions is not allowing it to pull down the data from Azure SQL. Interestingly enough, I am able to add a customer, but I have no idea where it's adding it to if it can't connect to the database!

Any thoughts here? Feels like I'm really close, but something isn't quite hooked up correctly I don't think.

General Discussions

answered on 11 Feb 2021

1 answer

673 views

Unable to add window -- token android.view.ViewRootImpl$W@c8be37d is not valid

Hello!
I have a popu that has a contentview with a radcombobox.
When I want to open the combobox to show the elements my application crashes with the following exception:

"Android.Views.WindowManagerBadTokenException: 'Unable to add window -- token android.view.ViewRootImpl$W@c8be37d is not valid; is your activity running?'"

What is wrong here?

Best regards,
Nico

ComboBox

answered on 11 Feb 2021

3 answers

672 views

Tab selection event

Hello,

I was wondering if TabView has events, for example, on tab selection? If I wanted to load contents of a tab only when it is selected, is there such a mechanism available?

TabView

answered on 11 Feb 2021

1 answer

101 views

Is it possible to style the Visible Columns Area in the DataGrid?

I would like to add some custom styling to the Visible columns area that is shown when a user clicks the (options button -> More).

Specifically I would like to make it so that when the user clicks the options button they go straight to this "Visible Columns screen" or clicks some other button and it goes to that screen. How can I do this?

Thanks

DataGrid

answered on 11 Feb 2021

7 answers

625 views

Creating a Global Style that specifies the BorderStyle

Hi everyone,

I'm trying to create a global style so that all RadEntry controls in my application have the same look and feel.

I'd like the CornerRadius of the entry controls to be 0 and to specify a border color.

I'm having issues figuring out how to specify the BorderStyle values in my global style.

This is what I've tried so far and none of my border style values were applied:

<OnPlatform x:Key="EntryPadding" x:TypeArguments="Thickness">

<On Platform="iOS" Value="10,10,0,20" />

<On Platform="Android,UWP" Value="10,10,0,10" />

</OnPlatform>

<Style x:Key="EntryBorderStyle" TargetType="telerikInput:BorderStyle">

<Setter Property="CornerRadius" Value="0" />

<Setter Property="BorderColor" Value="#808080" />

<Setter Property="BorderThickness" Value="5" />

</Style>

<Style TargetType="telerikInput:RadEntry">

<Setter Property="Padding" Value="{StaticResource EntryPadding}" />

<Setter Property="BorderStyle" Value="{StaticResource EntryBorderStyle}"/>

</Style>

Anyone have any ideas where I might be going wrong?

Thanks,

Greg

Entry

answered on 10 Feb 2021

1 answer

506 views

Compile error ILT0005 with Telerik package 2021.1.119.1

Ever since we upgraded to the latest Telerik package 2021.1.119.1 we get the following error when we compile in Release mode using .Net Native tool chain. I've redacted paths below.

ILT0005: 'C:\Users\<redacted>\.nuget\packages\runtime.win10-x64.microsoft.net.native.compiler\2.2.9-rel-29512-01\tools\x64\ilc\Tools\nutc_driver.exe @"C:\<redacted>.rsp"' returned exit code 1

General Discussions

answered on 09 Feb 2021

2 answers

147 views

Xamarin RadListView PressedItemStyle activating when tapping on whitespace outside of Listview

We have a RadListView that holds a list of items and have set the pressed state so that when you press it, the row highlights

<telerikDataControls:RadListView.PressedItemStyle>

<telerikListView:ListViewItemStyle

BackgroundColor="{Binding SongListRowSelectionColor}"

BorderColor="{x:Static SongListRowGreyLine}"

BorderLocation="Bottom"

BorderWidth="1" />

</telerikDataControls:RadListView.PressedItemStyle>

<telerikDataControls:RadListView.SelectedItemStyle>

<telerikListView:ListViewItemStyle

BackgroundColor="Transparent"

BorderColor="{x:Static SongListRowGreyLine}"

BorderLocation="Bottom"

BorderWidth="1" />

</telerikDataControls:RadListView.SelectedItemStyle>

<telerikDataControls:RadListView.ItemStyle>

<telerikListView:ListViewItemStyle

BackgroundColor="Transparent"

BorderColor="{x:Static SongListRowGreyLine}"

BorderLocation="Bottom"

BorderWidth="1" />

</telerikDataControls:RadListView.ItemStyle>

Above our list we have a blue banner that is a stack layout with a few buttons with space in-between that isn't "clickable" the problem we are seeing is when you tap the white space (because you miss tapping on the button or something) is that PressedItemStyle activates for all rows within the list view

we don't want this behavior and i wasn't able to find anything related to why this was happening. Just wondering how we can prevent this from happening while keeping the presseditemstyle

Thanks

ListView

answered on 09 Feb 2021