Azure 通知中心 UWP、UWP toast 通知不启动应用程序

Question

我正在按照本教程为 UWP 应用程序使用通知中心：Getting started with Notification Hubs for Windows Universal Platform Apps。

如果我使用 Windows 8 通知测试发送，例如：

<?xml version="1.0" encoding="utf-8"?>
<toast>
<visual><binding template="ToastText01">
<text id="1">Test message</text>
</binding>
</visual>
</toast>

它可以工作，如果我点击通知，它会通过 OnLaunched() 方法打开应用程序。但是，如果我发送 UWP 特定通知，例如：

<toast launch="app-defined-string">
<visual>
<binding template="ToastGeneric">
  <text>Microsoft Company Store</text>
  <text>New Halo game is back in stock!</text>
</binding>
</visual>
<actions>
<action activationType="foreground" content="See more details" arguments="details"/>
<action activationType="background" content="Remind me later" arguments="later"/>
</actions>
</toast>

toast 可以工作，但如果我点击它，它会打开应用程序并且 OnLaunched() 从未调用过，因此应用程序卡在了闪屏上。

提前感谢您的帮助，

问候

Answer 1

你需要在你的 app.xaml.cs 中实现 OnActivated

 protected override void OnActivated(IActivatedEventArgs args)
        {
            base.OnActivated(args);
        }

见https://blogs.msdn.microsoft.com/tiles_and_toasts/2015/07/08/quickstart-sending-a-local-toast-notification-and-handling-activations-from-it-windows-10/

Answer 2

对于那些有同样问题的人，用 Dave Smits 回答：只需在 App.xaml.cs 文件中添加 OnZctivated 方法并放置与 OnLaunched 方法相同的内容：

protected override async void OnLaunched(LaunchActivatedEventArgs e)
    {
        await OnLaunchedOrActivated(e);
    }

protected override async void OnActivated(IActivatedEventArgs e)
    {
        await OnLaunchedOrActivated(e);
    }

private async Task OnLaunchedOrActivated(IActivatedEventArgs e)
    {
        // Initialize things like registering background task before the app is loaded

        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();

            rootFrame.NavigationFailed += OnNavigationFailed;

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

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

        // Handle toast activation
        if (e is ToastNotificationActivatedEventArgs)
        {
            var toastActivationArgs = e as ToastNotificationActivatedEventArgs;

            // If empty args, no specific action (just launch the app)
            if (toastActivationArgs.Argument.Length == 0)
            {
                if (rootFrame.Content == null)
                    rootFrame.Navigate(typeof(MainPage));
            }
            // Otherwise an action is provided
            else
            {
                // Parse the query string


                // See what action is being requested

                // If we're loading the app for the first time, place the main page on the back stack
                // so that user can go back after they've been navigated to the specific page
                if (rootFrame.BackStack.Count == 0)
                    rootFrame.BackStack.Add(new PageStackEntry(typeof(MainPage), null, null));
            }
        }

        // Handle launch activation
        else if (e is LaunchActivatedEventArgs)
        {
            var launchActivationArgs = e as LaunchActivatedEventArgs;

            // If launched with arguments (not a normal primary tile/applist launch)
            if (launchActivationArgs.Arguments.Length > 0)
            {
                // TODO: Handle arguments for cases like launching from secondary Tile, so we navigate to the correct page
                throw new NotImplementedException();
            }

            // Otherwise if launched normally
            else
            {
                // If we're currently not on a page, navigate to the main page
                if (rootFrame.Content == null)
                    rootFrame.Navigate(typeof(MainPage));
            }
        }

        else
        {
            // TODO: Handle other types of activation
            throw new NotImplementedException();
        }


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