Xaml 使用RelativePanel构建自适应布局

您好，我想当视力低于720时，比如一部手机，我希望网格2低于网格1。我试过它的面板和自适应触发器，如下所示：

  <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

    <RelativePanel >
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="VisualStateGroup">
                <VisualState x:Name="NarrowView">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="0" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="Grid2.(RelativePanel.Below)" Value="Grid1"/>
                        <Setter Target="Grid1.(RelativePanel.Above)" Value="Grid2"/>
                    </VisualState.Setters>
                </VisualState>
                <VisualState x:Name="WideView">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="720" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="Grid2.(RelativePanel.RightOf)" Value="Grid1"/>
                        <Setter Target="Grid1.(RelativePanel.LeftOf)" Value="Grid2"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>

        <Grid >
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"></ColumnDefinition>
                <ColumnDefinition Width="*"></ColumnDefinition>
            </Grid.ColumnDefinitions>

            <Grid Grid.Column="0" x:Name="Grid1" >
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
                <TextBox Grid.Row="0" FontSize="20" PlaceholderText="NOME" Style="{StaticResource ResourceKey=TextBoxStyle}"/>
            </Grid>
            <Grid Grid.Column="1" x:Name="Grid2">
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>
                <TextBlock Grid.Row="0" FontSize="17" Text="Note" Foreground="#222222" Margin="20,15" ></TextBlock>
                <TextBox Grid.Row="2" MaxLength="0" FontSize="17" Height="500" PlaceholderText="AGGIUNGI NOTA" Style="{StaticResource ResourceKey=TextBoxStyle}"></TextBox>
            </Grid>
        </Grid>
    </RelativePanel>
</Grid>

但它不起作用。

---

谢谢

有两件事需要解决：

1）要使VisualState正常工作，请将VisualStateManager放置在根网格的第一个子项下：

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <VisualStateManager.VisualStateGroups>
......
        </VisualStateManager.VisualStateGroups>
......

</Grid>

......
......

2）您不需要添加列，只需将两个网格放置在RelativePanel下即可：

<RelativePanel>
            <Grid x:Name="Grid1">
                ......
            </Grid>
            <Grid x:Name="Grid2">
                ......
            </Grid>
        </RelativePanel>

......
......

已完成的xaml代码：

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="VisualStateGroup">
                <VisualState x:Name="NarrowView">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="0" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="Grid2.(RelativePanel.Below)" Value="Grid1"/>
                    </VisualState.Setters>
                </VisualState>
                <VisualState x:Name="WideView">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="720" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="Grid2.(RelativePanel.RightOf)" Value="Grid1"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        <RelativePanel>
            <Grid x:Name="Grid1">
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>
                <TextBox Grid.Row="0" FontSize="20" PlaceholderText="NOME" />
            </Grid>
            <Grid x:Name="Grid2">
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>
                <TextBlock Grid.Row="0" FontSize="17" Text="Note" Foreground="#222222" Margin="20,15" ></TextBlock>
                <TextBox Grid.Row="2" MaxLength="0" FontSize="17" Height="500" PlaceholderText="AGGIUNGI NOTA" ></TextBox>
            </Grid>
        </RelativePanel>
    </Grid>

---

如果有人关心，我找到了一个没有relativePanel的解决方案：

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="VisualStateGroup">
                <VisualState x:Name="NarrowView">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="0" />
                    </VisualState.StateTriggers>
                <VisualState.Setters>
                    <Setter Target="text.(Grid.ColumnSpan)" Value="2" />
                    <Setter Target="text1.(Grid.ColumnSpan)" Value="2" />
                    <Setter Target="text2.(Grid.ColumnSpan)" Value="2" />
                    <Setter Target="text1.(Grid.Row)" Value="1" />
                    <Setter Target="text1.(Grid.Column)" Value="0" />
                    <Setter Target="text2.(Grid.Row)" Value="2" />
                    <Setter Target="text2.(Grid.Column)" Value="0" />
                </VisualState.Setters>
                </VisualState>
                <VisualState x:Name="WideView">
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="860" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="text.(Grid.ColumnSpan)" Value="1" />
                        <Setter Target="text1.(Grid.Row)" Value="0" />
                        <Setter Target="text1.(Grid.Column)" Value="1" />
                        <Setter Target="text2.(Grid.Row)" Value="1" />
                        <Setter Target="text2.(Grid.Column)" Value="1" />
                </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
    <TextBox x:Name="text" PlaceholderText="NOME" />
    <TextBlock x:Name="text1" Grid.Row="0" Grid.Column="1" Text="Note"></TextBlock>
    <TextBox x:Name="text2" Grid.Row="1" Grid.Column="1" PlaceholderText="AGGIUNGI NOTA" ></TextBox>
</Grid>

完美。现在可以展开相对面板内的元素，就像在网格的列上一样？更改网格的Row and column属性是实现此效果的传统方法：）唯一的问题是每列的行布局相同。通过在每列中放置一个网格，我就有了一个独立的loyout，但我不能再通过statetrigger管理它们了？