如何Xamarin.Forms调整水平的ListView的大小？ [英] How to adjust size of Horizontal ListView in Xamarin.Forms?

问题描述

我看到该项和尝试，是的，滚动的方向变成水平。

I see this entry and try it, yes, scroll orientation becomes horizontal.

不过，视大小不调整观看的轮廓。

But, size of view is not adjust to view's outline.

结果是这样的：

我怎样才能调整，即使它被旋转的角度大小？

How can I adjust the size of view even if it is rotated?

推荐答案

您可以使用相对布局调整位置。这是我使用的是旋转垂直列表视图执行水平列表视图的XAML例如：

You can use a relative layout to adjust the position. This is a XAML example of a horizontal list view I implemented using a rotated vertical list view:

<?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="ExampleProject.SomePage" >
    <ContentPage.Content>
        <RelativeLayout>
            <ListView x:Name="listView"
                      ItemsSource="{Binding ExampleList}"
                      RowHeight="120"
                      Rotation="270"
                      RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=0.5, Constant=-60}"
                      RelativeLayout.YConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=-0.5, Constant=60}"
                      RelativeLayout.WidthConstraint="{ConstraintExpression Type=Constant, Constant=120}"
                      RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=1}"
                      >
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <ViewCell.View>
                                <Label Rotation="90"
                                       TranslationX="120" />
                            </ViewCell.View>
                        </ViewCell>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>
            <StackLayout
                RelativeLayout.XConstraint="{ConstraintExpression Type=Constant, Constant=0}"
                RelativeLayout.YConstraint="{ConstraintExpression Type=Constant, Constant=120}"
                RelativeLayout.WidthConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=1}"
                RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent, Property=Height, Factor=1, Constant=-120}"
                >
                <!-- Some content below list view -->
            </StackLayout>
        </RelativeLayout>
    </ContentPage.Content>
</ContentPage>

这应该iOS和Android上工作。

This should work on iOS and Android.

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