UI was not rendering properly issue.

[RSReswin]

2025-03-25.11-53-35.mp4

in android application Ui was not rendering properly, if i open the application shadow container's and UserControls wand not loading, when i am click recent application button and i again open the application the container's and UserControls was loading properly.

HomeModel.cs

private void OnGetBookCardStatisticsSuccess(string obj)
{
    var bookCards = new ObservableCollection<BookCard>();
    
    var statistics = JsonConvert.DeserializeObject<BookGetManyResponseDto>(obj);
    if (statistics is null)
    {
        InfoBoxManager.ShowMessage("Book Data Received Success but DTO Not Found!", "BookCard", InfoBarSeverity.Error);
        return;
    }
    
    foreach (var item in statistics.StatisticsMap)
    {
        bookCards.Add(new BookCard(item.Key, item.Value));
        _lastFetchBookId = item.Key;
    }
    
    OnBookStatisticsLoadCompleted?.Invoke(bookCards);
}

HomePage.xaml.cs

public HomePage()
{
    this.InitializeComponent();
    
    OnStart();
}

private void OnStart()
{
    HomeModel.OnBookStatisticsLoadCompleted += SetBookContainerData;
    HomeModel.OnVideoStatisticsLoadCompleted += SetVideoContainerData;
    LoadProfileData();
}

private void SetBookContainerData(ObservableCollection<BookCard> bookCards)
{
    BookContainer.ItemsSource = bookCards;
    _isScrollViewerItemsLoadCompleted = true;
}

private void SetVideoContainerData(ObservableCollection<VideoCard> videoCards)
{
    VideoContainer.ItemsSource = videoCards;
    _isScrollViewerItemsLoadCompleted = true;
}

BookCard.xaml.cs
UserControl

public BookCard(Guid bookId, BookStatisticsDto statisticsDto)
{ 
    OnStart(bookId, statisticsDto);
}   

private async void OnStart(Guid bookId, BookStatisticsDto statisticsDto)
{
    await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
    {
        this.InitializeComponent();

        _bookId = bookId;
        _statisticsDto = statisticsDto;
        _viewModel.OnFavoriteLoadCompleted += b => Favorite_ToggleButton.IsChecked = b;
        _viewModel.LoadInteractionContent(_bookId);
    });
}

[MartinZikmund]

Can you please provide some minimal repro of this and report it as an issue? Are you seeing some errors in the debug output or in logs?

[RSReswin]

yes i get bunch of errors on Debug Output.

debugConsoleErrors.txt

[RSReswin]

System.ArgumentNullException: Value cannot be null. (Parameter 'logger')

i just saw this logger getting null error in bookCardMode and VideoCardModel, i fix that both errors, still i get same UserControl not loading properly problem.

[jeromelaban]

yes i get bunch of errors on Debug Output.

Java.Lang.NoSuchMethodError: no non-static method "Landroid/graphics/Typeface;.getWeight()I"

This generally means that you're trying to run with an unsupported version of Android. Which version of Android are you using?

[RSReswin]

Ooo ok Got It.

Android 7.0 Nougat.