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我有一个带有图像的页面,其来源是本地 .png 资产。它以最令人讨厌的方式加载到视野中。

它在整个网格中加载,例如 RowSpan="2" ,然后在一两秒后弹出到位。太可怕了。

基于新的空白商店应用程序的 repro 应用程序的演示。

<common:LayoutAwarePage
    x:Name="pageRoot"
    x:Class="DeleteMeApp1.BasicPage1"
    DataContext="{Binding DefaultViewModel, RelativeSource={RelativeSource Self}}"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:DeleteMeApp1"
    xmlns:common="using:DeleteMeApp1.Common"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Page.Resources>

        <!-- TODO: Delete this line if the key AppName is declared in App.xaml -->
        <x:String x:Key="AppName">My Application</x:String>
    </Page.Resources>

    <!--
        This grid acts as a root panel for the page that defines two rows:
        * Row 0 contains the back button and page title
        * Row 1 contains the rest of the page layout
    -->
    <Grid Style="{StaticResource LayoutRootStyle}" Background="Brown">
        <Grid.RowDefinitions>
            <RowDefinition Height="140"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <VisualStateManager.VisualStateGroups>

            <!-- Visual states reflect the application's view state -->
            <VisualStateGroup x:Name="ApplicationViewStates">
                <VisualState x:Name="FullScreenLandscape"/>
                <VisualState x:Name="Filled"/>

                <!-- The entire page respects the narrower 100-pixel margin convention for portrait -->
                <VisualState x:Name="FullScreenPortrait">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PortraitBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>

                <!-- The back button and title have different styles when snapped -->
                <VisualState x:Name="Snapped">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="pageTitle" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedPageHeaderTextStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>

        <Image Grid.Row="0" Stretch="UniformToFill" Source="Assets/BackgroundTexturedBlackboard.png" />

        <!-- Back button and page title -->
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <Button x:Name="backButton" Click="GoBack" IsEnabled="{Binding Frame.CanGoBack, ElementName=pageRoot}" Style="{StaticResource BackButtonStyle}"/>
            <TextBlock x:Name="pageTitle" Grid.Column="1" Text="{StaticResource AppName}" Style="{StaticResource PageHeaderTextStyle}"/>
        </Grid>

        <StackPanel Grid.Row="1">

        </StackPanel>

    </Grid>
</common:LayoutAwarePage>
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1 回答 1

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问题出在布局上。尽管在技术上是合法的,但这种安排并不奏效。

我通过在现有根周围添加另一个 Grid 并使新根成为新根来解决了这个问题。

在新的根中,我添加了图像和我需要覆盖艺术品的其他元素,这种元素的顺序渲染得更好,尽管,我仍然需要调整过渡效果。

更新

事实上,这并不是故事的结局。删除图像并只留下一个不透明度为 0.5 的矩形,矩形的不透明度在页面加载后一秒设置。它是可怕的。

我制作了一个重现应用程序,对问题进行了录像并提交了一个连接错误。

https://connect.microsoft.com/VisualStudio/feedback/details/792303/windows-store-xaml-atrocious-obvious-delayed-application-of-opacity#details

于 2013-07-02T16:12:45.757 回答