Xamarin.Forms：ListView项目无法在Android平台上正常显示

Question

大家好日子。我正在创建一个简单的Xamarin.Forms（Portable）应用程序，它允许我创建Employee的记录并将其显示给ListView。

我能够在UWP平台上进行，并使其显示如下：

但是当我试图在Android平台上运行它时。它没有显示任何值，而是我只有这样的空页：

您认为这背后的原因是什么？这些是我对此页面的代码：

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
         x:Class="XamarinFormsDemo.Views.ClientListPage"
         xmlns:ViewModels="clr-namespace:XamarinFormsDemo.ViewModels;assembly=XamarinFormsDemo"
         xmlns:controls="clr-namespace:ImageCircle.Forms.Plugin.Abstractions;assembly=ImageCircle.Forms.Plugin.Abstractions"
         BackgroundImage="bg3.jpg"
         Title="Customer List">


 <ContentPage.BindingContext>
    <ViewModels:CustomerVM/>
  </ContentPage.BindingContext>

  <StackLayout Orientation="Vertical">

 <ListView ItemsSource="{Binding CustomerList}"
          HasUnevenRows="True">
  <ListView.ItemTemplate>
    <DataTemplate>
      <ViewCell>
        <Grid Padding="10" RowSpacing="10" ColumnSpacing="5">
          <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
          </Grid.RowDefinitions>
          <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
          </Grid.ColumnDefinitions>

          <controls:CircleImage Source="icon.png"
                 HeightRequest="66"
                 HorizontalOptions="CenterAndExpand"
                 Aspect="AspectFill"
                 WidthRequest="66"
                 Grid.RowSpan="2"
               />


          <Label Grid.Column="1"
                 Text="{Binding CUSTOMER_NAME}"
                 TextColor="#24e97d"
                 FontSize="24"/>



          <Label Grid.Column="1"
                  Grid.Row="1"
                   Text="{Binding CUSTOMER_CODE}"
                   TextColor="White"
                   FontSize="18"
                   Opacity="0.6"/>


          <Label Grid.Column="1"
              Grid.Row="2"
              Text="{Binding CUSTOMER_CONTACT}"
               TextColor="White"
               FontSize="18"
               Opacity="0.6"/>



        </Grid>
      </ViewCell>
    </DataTemplate>
  </ListView.ItemTemplate>

</ListView>


<StackLayout Orientation="Vertical"
         Padding="30,10,30,10"
         HeightRequest="20"
         BackgroundColor="#24e97d"
         VerticalOptions="Center"
         Opacity="0.5">
  <Label Text="© Copyright 2016   SMESOFT.COM.PH   All Rights Reserved "
         HorizontalTextAlignment="Center"
         VerticalOptions="Center"
         HorizontalOptions="Center" />
    </StackLayout>
  </StackLayout>

</ContentPage>

如果您想查看更多代码，请告诉我们。非常感谢。