制作可滚动的响应式gridview

Question

对于一个大学项目，我正在开发一个 UWP 应用程序，该应用程序显示当前天气信息并具有类似 Cortana 的界面来控制智能家居的某些部分。

该界面存在于桌面视图的三列一列中，并且这三列在移动设备上对齐为三行一列。这部分是我通过遵循教程并更改代码以满足我的特定需求来解决的。

我现在遇到的问题是，当作为一行放置时，列会按比例缩小以适合屏幕的 1/3。我将硬编码大小设置为 500 以查看是否可以使用固定值，因为内部元素的大小变化不大。但是，当我这样做时，视图不可滚动，并且第二行的大部分内容和整个第三行对用户都不可见。 我尝试通过将下面的代码添加到主网格来解决这个问题，但没有结果。

<Grid x:Name="MainGrid" ScrollViewer.VerticalScrollMode="Enabled" ScrollViewer.VerticalScrollBarVisibility="Visible">

TL;DR：如何使我的响应式网格布局在网格变得太大时可以滚动。

XAML 代码：

<Page
x:Class="UWPWeather.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:UWPWeather"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d" Loaded="Page_Loaded">

<Grid x:Name="MainGrid" ScrollViewer.VerticalScrollMode="Enabled" ScrollViewer.VerticalScrollBarVisibility="Visible">

    <Grid.Background>
        <ImageBrush Stretch="Fill" ImageSource="Assets/blue-sea-horizon.jpg"/>
    </Grid.Background>

    <VisualStateManager.VisualStateGroups>
        <VisualStateGroup>
            <VisualState x:Name="WideState">
                <VisualState.StateTriggers>
                    <AdaptiveTrigger MinWindowWidth="1100" />
                </VisualState.StateTriggers>
                <VisualState.Setters>
                    <Setter Target="MainGrid.RowDefinitions[1].Height" Value="0*"/>
                    <Setter Target="MainGrid.RowDefinitions[2].Height" Value="0*"/>
                    <Setter Target="MainGrid.ColumnDefinitions[1].Width" Value="1*"/>
                    <Setter Target="MainGrid.ColumnDefinitions[2].Width" Value="1*"/>
                    <Setter Target="FirstGrid.Margin" Value="0 0 0 0"/>
                    <Setter Target="SecondGrid.Margin" Value="0 0 0 0"/>
                    <Setter Target="SecondGrid.(Grid.Column)" Value="1"/>
                    <Setter Target="SecondGrid.(Grid.Row)" Value="0"/>
                </VisualState.Setters>
            </VisualState>
            <VisualState x:Name="NarrowState">
                <VisualState.StateTriggers>
                    <AdaptiveTrigger MinWindowWidth="0" />
                </VisualState.StateTriggers>
                <VisualState.Setters>
                    <Setter Target="FirstGrid.Margin" Value="0 0 0 6"/>
                    <Setter Target="SecondGrid.Margin" Value="0 6 0 0"/>
                    <Setter Target="MainGrid.RowDefinitions[0].Height" Value="500"/>
                    <Setter Target="MainGrid.RowDefinitions[1].Height" Value="500"/>
                    <Setter Target="MainGrid.RowDefinitions[2].Height" Value="500"/>
                    <Setter Target="MainGrid.ColumnDefinitions[1].Width" Value="0*"/>
                    <Setter Target="MainGrid.ColumnDefinitions[2].Width" Value="0*"/>
                    <Setter Target="SecondGrid.(Grid.Column)" Value="0"/>
                    <Setter Target="SecondGrid.(Grid.Row)" Value="1"/>
                    <Setter Target="ThirdGrid.(Grid.Column)" Value="0"/>
                    <Setter Target="ThirdGrid.(Grid.Row)" Value="1"/>
                </VisualState.Setters>
            </VisualState>
        </VisualStateGroup>
    </VisualStateManager.VisualStateGroups>


    <Grid.ColumnDefinitions>
        <ColumnDefinition/>
        <ColumnDefinition/>
        <ColumnDefinition/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition/>
        <RowDefinition/>
        <RowDefinition/>
    </Grid.RowDefinitions>


        <Grid x:Name="FirstGrid" Grid.Column="0" Grid.Row="0" Background="Transparent">
            <Button x:Name="StartRecognition" HorizontalAlignment="Center" VerticalAlignment="Center" Height="200" Width="200" Click="StartVoiceRecog">
                <Button.Background>
                    <ImageBrush Stretch="Uniform" ImageSource="Assets/microphone.png"/>
                </Button.Background>
            </Button>
        </Grid>

        <Grid x:Name="SecondGrid" Grid.Column="1" Grid.Row="0" Background="Transparent">
            <StackPanel Orientation="Vertical" HorizontalAlignment="Center" Padding="0,50,0,0">
                <TextBlock x:Name="LocationTextBlock" FontSize="36" Foreground="White" HorizontalAlignment="Center" TextWrapping="Wrap" />

                <StackPanel Orientation="Horizontal" Padding="5">
                    <Image x:Name="ResultImage" Width="200" Height="200" HorizontalAlignment="Left"/>
                    <TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" x:Name="TempTextBlock" FontSize="60" Foreground="White"/>
                </StackPanel>

                <TextBlock x:Name="DescriptionTextBlock" Padding="5" FontSize="36" Foreground="White" HorizontalAlignment="Center" />
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Padding="5">
                    <Image x:Name="WindDirection" Width="20" Height="20" />
                    <TextBlock x:Name="WindSpeed" FontSize="12" Foreground="White"/>
                </StackPanel>

                <TextBlock x:Name="Pressure" Padding="5" FontSize="12" Foreground="White" HorizontalAlignment="Center" />
                <TextBlock x:Name="Humidity" Padding="5" FontSize="12" Foreground="White" HorizontalAlignment="Center" />

                <StackPanel Orientation="Horizontal" Padding="5" HorizontalAlignment="Center">
                    <Image x:Name="SunRiseImage" Width="20" Height="20"/>
                    <TextBlock x:Name="Sunrise" FontSize="12" Foreground="White"  />
                </StackPanel>

                <StackPanel Orientation="Horizontal" Padding="5" HorizontalAlignment="Center" >
                    <Image x:Name="SunsetImage" Width="20" Height="20"/>
                    <TextBlock x:Name="Sunset" FontSize="12" Foreground="White" />
                </StackPanel>

                <Button x:Name="UpdateWeather" Padding="5" HorizontalAlignment="Center" VerticalAlignment="Center" Height="49" Width="39" Click="UpdateWeatherOnClick">
                    <Button.Background>
                        <ImageBrush Stretch="Fill" ImageSource="Assets/012_restart-512.png"/>
                    </Button.Background>
                </Button>
            </StackPanel>
        </Grid>

    <Grid x:Name="ThirdGrid" Grid.Column="2" Grid.Row="0" Background="Transparent">

    </Grid>
</Grid>

接口概念：

Interface wide

Interface narrow

Answer 1

UI 元素不会因为您在它们上设置了ScrollViewer.VerticalScrollMode="Enabled" 附加属性而变得可滚动。这些附加属性仅对在其模板中包含 ScrollViewer 的元素有用（ ScrollViewer 将采用附加属性的值）。

如果你想让你的MainGrid 可以滚动，你需要将它包装在一个 ScrollViewer 中。您还需要将VisualStateManager.VisualStateGroups 附加属性从MainGrid 提升到ScrollViewer。 VisualStateManager.VisualStateGroups 必须附加到模板根目录，否则无效。

<Page>
    <ScrollViewer>
        <VisualStateManager.VisualStateGroups>
            ...
        </VisualStateManager.VisualStateGroups>
        <Grid x:Name="MainGrid">
            ...
        </Grid>
    </ScrollViewer>
</Page>