xaml - Xamarin Forms旋转 ListView 调整行宽

Question

在 Xamarin Forms 中，我想实现一个水平 ListView (如下图所示)。通过旋转这是可能的，但我无法更改行宽。是否也有可能让第二个布局在第一个布局下开始？提前致谢!

 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
         x:Class="Recipe.Pages.SearchPage"
         Title="Search">
<ContentPage.Content>
<StackLayout Spacing="5" x:Name="layout" Orientation="Vertical" >
  <StackLayout x:Name="layoutButtons" HorizontalOptions="FillAndExpand" Orientation="Horizontal" Spacing="5" BackgroundColor="Red">
    <Button x:Name="btn1" BackgroundColor="White" Image="@drawable/scan" />
    <Button x:Name="btn2" BackgroundColor="White" Image="@drawable/menu" />
    <Button x:Name="btn3" BackgroundColor="White" Image="@drawable/search" />
  </StackLayout>
  <StackLayout x:Name="layoutList" >
    <ListView  x:Name="listView" Rotation="270" RowHeight="75" >
      <ListView.ItemTemplate>
        <DataTemplate>
          <ViewCell>
            <StackLayout BackgroundColor="#eee" Orientation="Vertical" >
              <StackLayout Orientation="Horizontal" >
                <Button BackgroundColor="White" Rotation="90" Image="{Binding Recipe}" />
              </StackLayout>
          </StackLayout>
          </ViewCell>
        </DataTemplate>
      </ListView.ItemTemplate>
    </ListView>
  </StackLayout>
 </StackLayout>
 </ContentPage.Content>
</ContentPage>

编辑我还尝试在 ListView 中使用网格。遇到同样的问题。

 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
         x:Class="Recipe.Pages.SearchPage"
         Title="Search">
<ContentPage.Content>
<StackLayout Spacing="5" x:Name="layout" Orientation="Vertical" >
  <StackLayout x:Name="layoutButtons" HorizontalOptions="FillAndExpand" Orientation="Horizontal" Spacing="5" BackgroundColor="Red">
    <Button x:Name="btn1" BackgroundColor="White" Image="@drawable/scan" />
    <Button x:Name="btn2" BackgroundColor="White" Image="@drawable/menu" />
    <Button x:Name="btn3" BackgroundColor="White" Image="@drawable/search" />
  </StackLayout>
  <StackLayout x:Name="layoutList" >
    <ListView  x:Name="listView" Rotation="270" RowHeight="75" >
      <ListView.ItemTemplate>
        <DataTemplate>
          <ViewCell>
            <Grid>
              <Grid.RowDefinitions>
                <RowDefinition Height="Auto" />
              </Grid.RowDefinitions>
              <Grid.ColumnDefinitions>
                <ColumnDefinition Width="75" />
              </Grid.ColumnDefinitions>
              <Button Grid.Column="0" BackgroundColor="White" Rotation="90" Image="{Binding Recipe}" />
            </Grid>
          </ViewCell>
        </DataTemplate>
      </ListView.ItemTemplate>
    </ListView>
  </StackLayout>
</StackLayout>
</ContentPage.Content>
</ContentPage>

Answer 1

我也遇到了同样的问题。我使用下面的 xaml 代码来管理 ListView 的高度和宽度。

<?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="VCRoom.HorizontalScroll">
  <ContentPage.Content >
    <RelativeLayout>
      <ListView x:Name="TestListView"
                RowHeight="80"
                Rotation="270"
                RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=0.5, Constant=-40}"
                RelativeLayout.YConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=-0.5, Constant=40}"
                RelativeLayout.WidthConstraint="{ConstraintExpression Type=Constant, Constant=80}"
                RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=1}"
                >
      </ListView>
    </RelativeLayout>
  </ContentPage.Content>
</ContentPage>

更改XConstraint和YConstraint中的RowHeight和Constant来管理水平ListView的宽度和高度 相应地。

仅供引用下面是我用来填充 ListView 项目的自定义单元格。我在每个列表项中显示了垂直标签。

<?xml version="1.0" encoding="UTF-8"?>
<ViewCell xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="VCRoom.TestCell">
  <ViewCell.View>

      <StackLayout Orientation="Horizontal" HorizontalOptions="End" VerticalOptions ="Center">
        <Label Rotation="90" Text="{Binding Day}"  TextColor="#000000" HorizontalOptions="StartAndExpand" VerticalOptions="Start"/>
        <Label Rotation="90" Text="{Binding mDate}" TextColor="#000000" HorizontalOptions="StartAndExpand" VerticalOptions="Start"/>
      </StackLayout>

  </ViewCell.View>
</ViewCell>

希望这对 future 的用户有所帮助。