protected override void OnNavigatedTo(NavigationEventArgs e)
{
_secondaryViewHelper = (SecondaryViewHelper)e.Parameter;
_secondaryViewHelper.Released += _secondaryViewHelper_Released;
// 设置当前窗口的 Title
ApplicationView.GetForCurrentView().Title = _secondaryViewHelper.Title;
_secondaryViewHelper.PropertyChanged += _secondaryViewHelper_PropertyChanged;
}
private async void btnShow_Click(object sender, RoutedEventArgs e)
{
/*
* CoreApplication.CreateNewView() - 创建一个新的 SecondaryView（只是新建一个 SecondaryView 实例，并不会显示出来）
*/
await CoreApplication.CreateNewView().Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
_secondaryViewHelper = SecondaryViewHelper.CreateForCurrentView();
_secondaryViewHelper.Title = "i am secondary view";
_secondaryViewHelper.StartViewInUse();
var frame = new Frame();
frame.Navigate(typeof(SecondaryViewPage), _secondaryViewHelper);
Window.Current.Content = frame;
Window.Current.Activate();
// 这里通过 ApplicationView.GetForCurrentView() 获取到的是新开窗口的 ApplicationView 对象
ApplicationView secondaryView = ApplicationView.GetForCurrentView();
});
try
{
_secondaryViewHelper.StartViewInUse();
/*
* ApplicationViewSwitcher.TryShowAsStandaloneAsync() - 在当前窗口的相邻位置显示另一个窗口
*/
ApplicationViewSwitcher.DisableShowingMainViewOnActivation();
var viewShown = await ApplicationViewSwitcher.TryShowAsStandaloneAsync
(
_secondaryViewHelper.Id, // 需要显示的 SecondaryView 的窗口 id
ViewSizePreference.Default, // 需要显示的 SecondaryView 的尺寸首选项（经测试，此参数无效）
ApplicationView.GetForCurrentView().Id, // 调用者的窗口 id
ViewSizePreference.Default // 调用者的尺寸首选项（经测试，此参数无效）
);
if (!viewShown)
{
lblMsg.Text = "显示 SecondaryView 失败";
}
_secondaryViewHelper.StopViewInUse();
}
catch (Exception ex)
{
lblMsg.Text = ex.ToString();
}
}
