Listview 增量列表视图不显示xamarin表单

我正在用Xamarin表单构建一个应用程序，我想使用

我看过这两个实现，但似乎没有一个能正常工作，所以我混合了这两个实现，以便能够运行我的代码

现在的问题是视图上没有显示任何内容

这是我的密码：

ImovsPage.cs

public partial class ImovsPage : ContentPage
{

    public Task Initialization { get; private set; }
    public static LinkedList<Imovel> Imoveis { get; set; }

    public ImovsPage()
    {
        Initialization = InitializeAsync();
        InitializeComponent();
    }

    async Task InitializeAsync()
    {
        Imoveis = await Imovel.GetInitializedListAsync();
    }
}

public分部类ImovsPage:ContentPage
{
公共任务初始化{get；private set；}
公共静态链接列表Imoveis{get；set；}
公共网页（）
{
初始化=InitializeAsync（）；
初始化组件（）；
}
异步任务初始化同步（）
{
Imoveis=await Imovel.GetInitializedListAsync（）；
}
}

ImovsPage.cs.xaml

<?xml version="1.0" encoding="UTF-8"?>
<ContentPage 
    xmlns="http://xamarin.com/schemas/2014/forms" 
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
    xmlns:plugin="clr-namespace:IncrementalListView.FormsPlugin;assembly=IncrementalListView.FormsPlugin"
    x:Class="YmoApp.ImovsPage">
    <ContentPage.Content>
        <plugin:IncrementalListView
            ItemsSource="{Binding Imoveis}"
            PreloadCount="5">

            <x:Arguments>
                <ListViewCachingStrategy>RecycleElement</ListViewCachingStrategy>
            </x:Arguments>

            <ListView.ItemTemplate>
                <DataTemplate>
                    <ViewCell>
                        <Image Source="{Binding Imagens}"/>
                        <Label Text="{Binding Valor}"/>
                    </ViewCell>
                </DataTemplate>
            </ListView.ItemTemplate>
            <ListView.Footer>
                <ActivityIndicator Margin="20" IsRunning="{Binding IsLoadingIncrementally}" IsVisible="{Binding IsLoadingIncrementally}"/>        
            </ListView.Footer>
        </plugin:IncrementalListView>
    </ContentPage.Content>
</ContentPage>

public class IncrementalViewModel : INotifyPropertyChanged, ISupportIncrementalLoading
    {
        public int PageSize { get; set; } = Settings.MaxImoveis;

        public ICommand LoadMoreItemsCommand { get; set; }

        public bool IsLoadingIncrementally { get; set; }

        public bool HasMoreItems { get; set; }

        public IncrementalViewModel()
        {
            LoadMoreItemsCommand = new Command(async () => await LoadMoreItems());
        }

        public event PropertyChangedEventHandler PropertyChanged;

        async Task LoadMoreItems()
        {
            IsLoadingIncrementally = true;

            Settings.incrementPage();
            // Download data from a service, etc.
            // Add the newly download data to a collection
            foreach(Imovel imovel in await Imovel.GetInitializedListAsync()){
                ImovsPage.Imoveis.AddLast(imovel);

            }

            HasMoreItems = (ImovListRequest.Total < Settings.Page * Settings.MaxImoveis);

            IsLoadingIncrementally = false;
        }
    }

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<?xml version="1.0" encoding="UTF-8"?>
<ContentPage 
    xmlns="http://xamarin.com/schemas/2014/forms" 
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
    xmlns:plugin="clr-namespace:IncrementalListView.FormsPlugin;assembly=IncrementalListView.FormsPlugin"
    x:Class="YmoApp.ImovsPage">
    <ContentPage.Content>
        <plugin:IncrementalListView
            ItemsSource="{Binding Imoveis}"
            PreloadCount="5">

            <x:Arguments>
                <ListViewCachingStrategy>RecycleElement</ListViewCachingStrategy>
            </x:Arguments>

            <ListView.ItemTemplate>
                <DataTemplate>
                    <ViewCell>
                        <Image Source="{Binding Imagens}"/>
                        <Label Text="{Binding Valor}"/>
                    </ViewCell>
                </DataTemplate>
            </ListView.ItemTemplate>
            <ListView.Footer>
                <ActivityIndicator Margin="20" IsRunning="{Binding IsLoadingIncrementally}" IsVisible="{Binding IsLoadingIncrementally}"/>        
            </ListView.Footer>
        </plugin:IncrementalListView>
    </ContentPage.Content>
</ContentPage>

public class IncrementalViewModel : INotifyPropertyChanged, ISupportIncrementalLoading
    {
        public int PageSize { get; set; } = Settings.MaxImoveis;

        public ICommand LoadMoreItemsCommand { get; set; }

        public bool IsLoadingIncrementally { get; set; }

        public bool HasMoreItems { get; set; }

        public IncrementalViewModel()
        {
            LoadMoreItemsCommand = new Command(async () => await LoadMoreItems());
        }

        public event PropertyChangedEventHandler PropertyChanged;

        async Task LoadMoreItems()
        {
            IsLoadingIncrementally = true;

            Settings.incrementPage();
            // Download data from a service, etc.
            // Add the newly download data to a collection
            foreach(Imovel imovel in await Imovel.GetInitializedListAsync()){
                ImovsPage.Imoveis.AddLast(imovel);

            }

            HasMoreItems = (ImovListRequest.Total < Settings.Page * Settings.MaxImoveis);

            IsLoadingIncrementally = false;
        }
    }

public类IncrementalViewModel:INotifyPropertyChanged，支持incrementalloading
{
public int PageSize{get；set；}=Settings.MaxImoveis；
公共ICommand LoadMoreItemsCommand{get；set；}
public bool isloadingincremently{get；set；}
公共bool HasMoreItems{get；set；}
公共增量alviewmodel（）
{
LoadMoreItemsCommand=new命令（异步（）=>await LoadMoreItems（））；
}
公共事件属性更改事件处理程序属性更改；
异步任务LoadMoreItems（）
{
IsLoadingIncremently=真；
Settings.incrementPage（）；
//从服务等下载数据。
//将新下载的数据添加到集合中
foreach（等待Imovel.GetInitializedListAsync（）中的Imovel Imovel）{
ImovsPage.imovis.AddLast（imovel）；
}
HasMoreItems=（ImovListRequest.Total

这在