- 1 year ago
Enable Back/Forward & Refresh Gestures in Universal Windows App (XAML)
To enable back/forward and refresh gestures in a Universal Windows App using XAML, you can utilize the WebView
control and handle the necessary events. Here's a step-by-step guide to implement these gestures:
Add the WebView Control: In your XAML layout, add a
WebView
control to the desired area of your app's user interface. For example:xaml<Grid>
<WebView x:Name="MyWebView" />
</Grid>
Enable Gesture Recognition: In the code-behind file (e.g., MainPage.xaml.cs), wire up the necessary event handlers to enable gesture recognition. The
WebView
control exposes theGoBack
,GoForward
, andRefresh
methods that can be triggered in response to gestures. For example:csharppublic MainPage()
{
InitializeComponent();
MyWebView.NavigationStarting += WebView_NavigationStarting;
}
private void WebView_NavigationStarting(WebView sender, WebViewNavigationStartingEventArgs args)
{
// Enable back/forward gestures
MyWebView.CanGoBackChanged += WebView_CanGoBackChanged;
MyWebView.CanGoForwardChanged += WebView_CanGoForwardChanged;
// Enable refresh gesture
MyWebView.Refresh();
}
private void WebView_CanGoBackChanged(WebView sender, object args)
{
// Enable/disable back gesture based on whether there's a navigation history
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility =
sender.CanGoBack ? AppViewBackButtonVisibility.Visible : AppViewBackButtonVisibility.Collapsed;
}
private void WebView_CanGoForwardChanged(WebView sender, object args)
{
// Enable/disable forward gesture based on whether there's a forward navigation history
// You can handle this similar to the CanGoBackChanged event
}
Handle Back/Forward and Refresh Gestures: To handle the back/forward and refresh gestures, you need to implement the necessary event handlers. For example, you can handle the back gesture in the
OnBackRequested
event of theSystemNavigationManager
and call theGoBack
method of theWebView
control. Similarly, you can handle the forward gesture and call theGoForward
method. For refresh, you can simply call theRefresh
method of theWebView
control. Here's an example for handling the back gesture:csharpSystemNavigationManager.GetForCurrentView().BackRequested += (sender, e) =>
{
if (MyWebView.CanGoBack)
{
MyWebView.GoBack();
e.Handled = true;
}
};
With these steps, you can enable back/forward and refresh gestures in your Universal Windows App using XAML and the WebView
control. Remember to handle the necessary events and update the UI accordingly based on the navigation history of the WebView
.