Ejemplo n.º 1
0
        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used when the application is launched to open a specific file, to display
        /// search results, and so forth.
        /// </summary>
        /// <param name="e">Details about the launch request and process.</param>
        protected override async void OnLaunched(LaunchActivatedEventArgs e)
        {
#if DEBUG
            if (System.Diagnostics.Debugger.IsAttached)
            {
                this.DebugSettings.EnableFrameRateCounter = true;
            }
#endif

            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();

                // Associate the frame with a SuspensionManager key.
                SuspensionManager.RegisterFrame(rootFrame, "AppFrame");

                // TODO: Change this value to a cache size that is appropriate for your application.
                rootFrame.CacheSize = 1;

                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    // Restore the saved session state only when appropriate.
                    try
                    {
                        await SuspensionManager.RestoreAsync();
                    }
                    catch (SuspensionManagerException)
                    {
                        // Something went wrong restoring state.
                        // Assume there is no state and continue.
                    }
                }

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

            if (rootFrame.Content == null)
            {
                // Removes the turnstile navigation for startup.
                if (rootFrame.ContentTransitions != null)
                {
                    this.transitions = new TransitionCollection();
                    foreach (var c in rootFrame.ContentTransitions)
                    {
                        this.transitions.Add(c);
                    }
                }

                rootFrame.ContentTransitions = null;
                rootFrame.Navigated         += this.RootFrame_FirstNavigated;

                // When the navigation stack isn't restored navigate to the first page,
                // configuring the new page by passing required information as a navigation
                // parameter.
                if (!rootFrame.Navigate(typeof(PivotPage), e.Arguments))
                {
                    throw new Exception("Failed to create initial page");
                }
            }

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