Problem with rewrite the Backgrounding event

it fire the close button event and close the app.

Hello,

it fire the close button event and close the app.

As explained on GitHub- With a single instance application, closing the window closes the application. When you enable multiple windows, the opposite happens; Closing all of the open windows does not close the application but keeps it running so you can open windows from the dock.

If the Backgrounding method still cannot be triggered, please double-check the following steps:

1. add a class named SceneDelegate to the Platforms > iOS and Platforms > MacCatalyst folders

[Register("SceneDelegate")]
public class SceneDelegate : MauiUISceneDelegate
{
}

2. add the following key in Platforms > MacCatalyst > Info.plist file

<key>UIApplicationSceneManifest</key>
<dict>
  <key>UIApplicationSupportsMultipleScenes</key>
  <true/>
  <key>UISceneConfigurations</key>
  <dict>
    <key>UIWindowSceneSessionRoleApplication</key>
    <array>
      <dict>
        <key>UISceneConfigurationName</key>
        <string>__MAUI_DEFAULT_SCENE_CONFIGURATION__</string>
        <key>UISceneDelegateClassName</key>
        <string>SceneDelegate</string>
      </dict>
    </array>
  </dict>
</dict>

3. implement Backgrounding method in App class

public partial class App : Application
{

public App()
{
	InitializeComponent();

	MainPage = new AppShell();
}
protected override Window CreateWindow(IActivationState? activationState)
{

    var window = base.CreateWindow(activationState);
    window.Backgrounding += Window_Backgrounding;
    return window;
}

private void Window_Backgrounding(object? sender, BackgroundingEventArgs e)
{
  // please check if this method can be triggered  System.Diagnostics.Debug.WriteLine($"Window_Backgrounding");
}
}

For more details, please refer to .NET MAUI windows - .NET MAUI | Microsoft Learn

Best Regards,

Wenyan Zhang

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I need when closing the window to close the token. I already enable multiple windows and it works ,but when I click on button in one of my pages and create task i reach window_ background event.Why?No solution ?

Do you understand my problem?

when I click on button in one of my pages and create task i reach window_ background event.

It's the default behavior of Maccatalyst, please see the explain.