Windows Phone 8.1 Light主题页面，黑色背景

Question

在WP（我的情况下是Windows运行时应用程序）上，如果我们将应用程序设置为在Light主题上运行，则在执行转换时，我们仍然可以看到黑色背景。

有什么办法可以避免吗？

例如，在下面的动画中，您可以看到页面动画但在结束之前仍有黑色背景。我想以某种方式将其设置为白色，但我不确定如何......

（来自 http://jamescroft.co.uk/blog/windows-phone/utilizing-page-transition-animations-in-windows-phone-8-1-apps/#comment-907的图片）。

Answer 1

在思考了什么项目可能是Page的父级之后，我将注意力转向了Frame。

这可以通过在BackgroundColor方法（OnLaunched

App.xaml.cs):

protected override async void OnLaunched(LaunchActivatedEventArgs e)
{
    Frame rootFrame = Window.Current.Content as Frame;

    // Do not repeat app initialization when the Window already has content,
    // just ensure that the window is active
    if (rootFrame == null)
    {
        // Create a Frame to act as the navigation context and navigate to the first page
        rootFrame = new Frame
        {
            CacheSize = 1,
            Background = new SolidColorBrush(Colors.White)
        };

        if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
        {
            // TODO: Load state from previously suspended application
        }

        // Place the frame in the current Window
        Window.Current.Content = rootFrame;
    }

    ... //rest of OnLaunched method
}

属性来解决> protected override async void OnLaunched(LaunchActivatedEventArgs e) { Frame rootFrame = Window.Current.Content as Frame; // Do not repeat app initialization when the Window already has content, // just ensure that the window is active if (rootFrame == null) { // Create a Frame to act as the navigation context and navigate to the first page rootFrame = new Frame { CacheSize = 1, Background = new SolidColorBrush(Colors.White) }; if (e.PreviousExecutionState == ApplicationExecutionState.Terminated) { // TODO: Load state from previously suspended application } // Place the frame in the current Window Window.Current.Content = rootFrame; } ... //rest of OnLaunched method } 方法，因为这将在某些情况下启动，例如其他应用程序启动您的应用程序的URI或Cortana启动应用程序等。