長列表選擇器跳轉列表scren windows phone

Question

我在Windows Phone應用程序中使用分組長列表選擇器。它具有正常的行爲，只要點擊一個標題，跳轉列表屏幕就會打開。但是，當我在頁面上進行導航而沒有來自用戶的任何交互時，我想觸發此操作。在沒有任何用戶交互的情況下導航到頁面時，是否有可能顯示跳轉列表？謝謝

<phone:LongListSelector 
       Height="570" 
       Margin="0,-10,0,0" 
       VerticalAlignment="Top" 
       LayoutMode="List" 
       x:Name="SizeLLs" 
       SelectionChanged="LongListSelector_SelectionChanged_1" 
       ItemsSource="{Binding Path=CurrentProduct.product_variations, Source={StaticResource LocalVariablesResources}}"> 
    <phone:LongListSelector.ItemTemplate> 
     <DataTemplate> 
      <Grid Margin="12,10"> 
       <Grid.ColumnDefinitions> 
        <ColumnDefinition Width="Auto"></ColumnDefinition> 
        <ColumnDefinition Width="*"></ColumnDefinition> 
        <ColumnDefinition Width="Auto"></ColumnDefinition> 
        <ColumnDefinition Width="Auto"></ColumnDefinition> 
       </Grid.ColumnDefinitions> 
       <Image Grid.Column="0" Source="/Assets/emptyCircle.png" ></Image> 
       <Image Grid.Column="0" Source="/Assets/check50pxRadioBT.png" Visibility="{Binding isSelected, Converter={StaticResource VisibilityConverter}, Mode=OneWay}" ></Image> 

       <TextBlock Grid.Column="1" FontWeight="Normal" TextWrapping="Wrap" Margin="15,10,10,10" Foreground="#878780" FontSize="30" HorizontalAlignment="Left" VerticalAlignment="Center" Text="{Binding title}"></TextBlock> 
       <TextBlock Grid.Column="2" FontWeight="Normal" Margin="15,10,5,10" Foreground="#878780" FontSize="20" HorizontalAlignment="Left" VerticalAlignment="Center" Text="{Binding price}"></TextBlock> 
       <TextBlock Grid.Column="3" FontWeight="Normal" Margin="0,10,15,10" Foreground="#878780" FontSize="20" HorizontalAlignment="Left" VerticalAlignment="Center" Text="{Binding Path=CurrentConfiguration.currency_symbol, Source={StaticResource LocalVariablesResources}}"></TextBlock> 

      </Grid> 
     </DataTemplate> 
    </phone:LongListSelector.ItemTemplate> 

</phone:LongListSelector> 

Answer 1

不幸的是，對於你來說，LongListselector並沒有公開地公開這個功能。

您可以採取the WP7 source code of the control，並添加您需要的功能（即公開OpenPopup方法）。