[C＃]从Toast打开App [英] [C#]Open App from Toast

问题描述

我有来自通知中心的自适应Toast通知，我已经成功配置并从OnActivatedEvent解雇，如下图所示;

I have an Adaptive Toast Notification coming in from Notification Hub, and i have successfully configured and are firing from the OnActivatedEvent as illustrated below;

         protected override async void OnActivated（IActivatedEventArgs e）

        {

            //获取根框架$
            Frame frameFrame = Window.Current.Content as Frame;



            //处理吐司激活

            if（e.Kind == ActivationKind.ToastNotification）

            {

                VAR refreshDataTasks = GetViewModels（）

                。选择（VM => vm.LoadDataAsync（真））;

             &NBSP ; 等待Task.WhenAll（refreshDataTasks）;

                NavigationService.NavigateToPage（typeof（NewsListPage））;
$


            }




            //确保当前窗口处于活动状态

            Window.Current.Activate（）;

        }

        protected override async void OnActivated(IActivatedEventArgs e)
        {
            // Get the root frame
            Frame rootFrame = Window.Current.Content as Frame;

            // Handle toast activation
            if (e.Kind == ActivationKind.ToastNotification)
            {
                var refreshDataTasks = GetViewModels()
                .Select(vm => vm.LoadDataAsync(true));
                await Task.WhenAll(refreshDataTasks);
                NavigationService.NavigateToPage(typeof(NewsListPage));

            };


            // Ensure the current window is active
            Window.Current.Activate();
        }

这在应用程序打开时非常有效，但是，我希望Toast点击同时打开应用程序并浏览到该特定应用程序页面，但是当我这样做时，我收到有关初始化NavigationService的错误。

This works perfectly when the app is open, however, I would like the Toast click to also open the app and browse to that specific page, but when I do, I receive an error regarding Initializing the NavigationService.

我在网上看到很多像我一样的例子，每个人都说它有用。

I have seen many examples on the web written just like mine and everyone says it works.

如何在应用关闭时从吐司导航到某个页面？ 我已尝试过PreviousExecution状态，但似乎在OnActivated事件中，NavigationService尚未初始化。

How can I navigate to a page from toast when the app was closed?  I have tried PreviousExecution state, but it appears that in the OnActivated event, NavigationService has yet to be initialized.

我该如何使用？

DWM

推荐答案

你可以试试使用框架导航到页面：

You could try to use the Frame to navigate to the page:

protected async override void OnActivated(IActivatedEventArgs args)
        {
            // Get the root frame
            Frame rootFrame = Window.Current.Content as Frame;

            // Handle toast activation
            if (args.Kind == ActivationKind.ToastNotification)
            {
                var refreshDataTasks = GetViewModels()
                .Select(vm => vm.LoadDataAsync(true));
                await Task.WhenAll(refreshDataTasks);
                rootFrame.Navigate(typeof(NewsListPage));
            };


            // Ensure the current window is active
            Window.Current.Activate();
        }

我没有内置的NavigationService.NavigateToPage UWP API。

There is no built-in NavigationService.NavigateToPage UWP API that I am aware of.

希望有所帮助。

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