将子高度或宽度设置为父控件与android中的“match_parent”相同

Question

我有一个包含网格的页面，并且在该网格中有一张地图。但我无法将地图的大小设置为与网格大小相同。虽然我可以在代码中将其设置为

MyMap.Height = LayoutRoot.ActualHeight;
MyMap.Width = LayoutRoot.ActualWidth;

但是如何在 xaml 中设置它。

<phone:PhoneApplicationPage
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:maps="clr-namespace:Microsoft.Phone.Maps.Controls;assembly=Microsoft.Phone.Maps"
    x:Class="MapSample.MainPage"
    mc:Ignorable="d"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    SupportedOrientations="Portrait" Orientation="Portrait"
    shell:SystemTray.IsVisible="True">

    <Grid x:Name="LayoutRoot" Background="Red">
        <maps:Map x:Name="MyMap" HorizontalAlignment="Left" VerticalAlignment="Top" Center="47.6097, -122.3331" ZoomLevel="10"/>
    </Grid>

</phone:PhoneApplicationPage>

Answer 1

你应该将地图控件的HorizontalAlignment和VerticalAlignment设置为Stretch

<maps:Map x:Name="MyMap"
          HorizontalAlignment="Stretch"
          VerticalAlignment="Stretch"
          Center="47.6097, -122.3331"
          ZoomLevel="10" />