在剛新增的頁面裡，增加移入的動畫

SettingPage.xaml.cs

        const int ContentAnimationOffset = 100;
        public SettingPage()
        {
            this.InitializeComponent();
            FlyoutContent.Transitions = new Windows.UI.Xaml.Media.Animation.TransitionCollection();
            FlyoutContent.Transitions.Add(new Windows.UI.Xaml.Media.Animation.EntranceThemeTransition()
            {
                FromHorizontalOffset = (SettingsPane.Edge == SettingsEdgeLocation.Right) ? ContentAnimationOffset : (ContentAnimationOffset * -1)
            });
        }

        private void BackClicked(object sender, RoutedEventArgs e)
        {
            Popup parent = this.Parent as Popup;
            if (parent != null)
                parent.IsOpen = false;

            if (Windows.UI.ViewManagement.ApplicationView.Value != Windows.UI.ViewManagement.ApplicationViewState.Snapped)
                SettingsPane.Show();
        }