在Xaml Xamarin.Forms中的FlowListView中显示空屏幕

如何在XAML Xamarin.Forms中执行FlowListView？

这是我的密码：

XAML:

<flv:FlowListView FlowColumnCount="3" SeparatorVisibility="None" HasUnevenRows="true" x:Name="grid_list" ItemsSource="{Binding list_grid}" HeightRequest="100" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
    <flv:FlowListView.FlowColumnTemplate>
      <DataTemplate>
        <Image Source="{Binding Image}" Margin="20" VerticalOptions="Fill" HorizontalOptions="Fill" XAlign="Center" YAlign="Center"/>
      </DataTemplate>
    </flv:FlowListView.FlowColumnTemplate>
  </flv:FlowListView>

---

谁能告诉我我在这里犯的错误，这是显示空屏幕。

这是INotifyPropertyChanged的代码

public class CarosualImages : INotifyPropertyChanged
{
    private string _name = String.Empty;

    public CarosualImages()
    {
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }

     public string ImageName
     {
        get { return _name; }
        set
        {
            _name= value;
            OnPropertyChanged();
        }
     }
 }

---

将

Public

放在

ObservableCollection<CarosualImages> list_grid { get; set; }

observeCollection list_grid{get；set；}

我认为您需要实现INotifyPropertyChangedOk，但是，您能告诉我如何实现吗？您能再解释一下吗？

public class CarosualImages : INotifyPropertyChanged
{
    private string _name = String.Empty;

    public CarosualImages()
    {
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }

     public string ImageName
     {
        get { return _name; }
        set
        {
            _name= value;
            OnPropertyChanged();
        }
     }
 }

ObservableCollection<CarosualImages> list_grid { get; set; }