VerticalTextAlignment =“ End”不能在<stacklayout>

Question

我有此代码：

<?xml version="1.0" encoding="utf-8"?>
<StackLayout xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
             xmlns:local="clr-namespace:Japanese;assembly=Japanese" 
             x:Class="Japanese.Templates.HeaderTemplate" 
             x:Name="this" BackgroundColor="#efeff4" HorizontalOptions="FillAndExpand" Orientation="Vertical" Spacing="0" Margin="0">
    <StackLayout HeightRequest="50" >
        <Label Text="ABC" HorizontalOptions="Start" VerticalTextAlignment="End" Margin="20, 0, 0, 0" />
    </StackLayout>
</StackLayout>

运行时，文本ABC出现在单元格的顶部，而不是底部。

有人可以向我解释为什么当我使用VerticalTextAlighment =“ End”时为什么它没有出现在底部

我也尝试过此操作，但仍将文本放在StackLayout的顶部：

<?xml version="1.0" encoding="utf-8"?>
<StackLayout xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
             xmlns:local="clr-namespace:Japanese;assembly=Japanese" 
             x:Class="Japanese.Templates.HeaderTemplate" 
             x:Name="this" BackgroundColor="#efeff4" HorizontalOptions="FillAndExpand" Orientation="Vertical" Spacing="0" Margin="0">
    <StackLayout HeightRequest="50" >
        <Label Text="ABC" HorizontalOptions="Start" VerticalTextAlignment="End" 
        VerticalOptions="End" Margin="20, 0, 0, 0" />
    </StackLayout>
</StackLayout>

Answer 1

<ContentPage BackgroundColor="Purple" xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:local="clr-namespace:test3" x:Class="test3.MainPage">
    <StackLayout BackgroundColor="Yellow">
        <!-- Place new controls here -->
        <Label BackgroundColor="Pink" Text="I'm at the bottom!" HorizontalOptions="Center" VerticalOptions="EndAndExpand" />
    </StackLayout>
</ContentPage>