如何在UWP多视图中获得不同大小的窗口

Question

在下面的代码中，我不能修补ViewSizePreference选项并使子元素小于父元素。我正在从一个页面弹出。这部分很好。然而，两个窗口的大小完全相同。

private async void Test_Click(object sender,RoutedEventArgs e){
var currentAV = ApplicationView.GetForCurrentView();
var newAV = CoreApplication.CreateNewView();
await newAV.Dispatcher.RunAsync(
                CoreDispatcherPriority.Normal,
                async () =>
                {
                    var newWindow = Window.Current;
                    var newAppView = ApplicationView.GetForCurrentView();
                    newAppView.Title = "New window";
                    var frame = new Frame();
                    frame.Navigate(typeof(MainPage), null);
                    newWindow.Content = frame;
                    newWindow.Activate();
                    await ApplicationViewSwitcher.TryShowAsStandaloneAsync(
                        newAppView.Id,
                        ViewSizePreference.UseMinimum,
                        currentAV.Id,
                        ViewSizePreference.UseMinimum);
                });
}

Answer 1

但是，两个窗口的大小完全相同。

是的，我刚刚发现了同样的问题，我已经报告了这个问题。一旦我收到这个问题的回复，我会在这里发布。

到目前为止，我们可以使用一个变通方法来解决这个问题，因为你想要展开一个比主窗口小的新窗口，你可以使用ApplicationView。TryResizeView | TryResizeView方法以编程方式设置新窗口的大小。

例如:

private async void Test_Click(object sender, RoutedEventArgs e)
{
    var currentAV = ApplicationView.GetForCurrentView();
    //get the bounds of current window.
    var rect = Window.Current.Bounds;
    var newAV = CoreApplication.CreateNewView();
    await newAV.Dispatcher.RunAsync(
                    CoreDispatcherPriority.Normal,
                    async () =>
                    {
                        var newWindow = Window.Current;
                        var newAppView = ApplicationView.GetForCurrentView();
                        newAppView.Title = "New window";
                        var frame = new Frame();
                        //send current window's size as parameter.
                        frame.Navigate(typeof(MainPage), rect.Width.ToString() + ":" + rect.Height.ToString());
                        newWindow.Content = frame;
                        newWindow.Activate();
                        await ApplicationViewSwitcher.TryShowAsStandaloneAsync(
                            newAppView.Id,
                            ViewSizePreference.UseHalf,
                            currentAV.Id,
                            ViewSizePreference.UseHalf);
                    });
}

则在OnNavigatedTo法和Loaded event法中:

private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
    if (size != null)
    {
        var newwidth = Convert.ToInt32(size[0]) - 300;
        var newheight = Convert.ToInt32(size[1]) - 200;
        ApplicationView.GetForCurrentView().TryResizeView(new Size { Width = newwidth, Height = newwidth });
    }
}
private string[] size;
protected override void OnNavigatedTo(NavigationEventArgs e)
{
    if (e.Parameter.ToString() != "")
    {
        size = e.Parameter.ToString().Split(':');
    }
}

或者如果你不介意看到新窗口的大小调整过程，你也可以试试这段代码，并且不需要在这个方法中将大小作为参数发送给新窗口:

var frame = new Frame();
frame.Navigate(typeof(MainPage), null);
newWindow.Content = frame;
newWindow.Activate();
await ApplicationViewSwitcher.TryShowAsStandaloneAsync(
    newAppView.Id,
    ViewSizePreference.UseHalf,
    currentAV.Id,
    ViewSizePreference.UseHalf);
newAppView.TryResizeView(new Size { Width = rect.Width - 300, Height = rect.Height - 200 });