WinUI 3 - How to Retrieve ActivatedEventArgs Multiple Times?

Question

The documentation states that AppInstance.GetActivatedEventArgs

this method will only return the arguments the first time it is called in an app.

If a packed single-instanced WinUI 3 app is activated from a protocol multiple times, what approach can be used to retrieve the URL each time?

Answer 1

Hi,

Welcome to Microsoft Q&A!

Could you please tell us how do you create the single-instanced WinUI app? Whether you followed the Doc: Create a single-instanced WinUI app with C#

If so, you will define the DecideRedirection method. In the DecideRedirection method you could call AppInstance.GetCurrent().GetActivatedEventArgs() to get the current IActivatedEventArgs. And then you could get the url via the ExtendedActivationKind.Protocol.

AppActivationArguments args = AppInstance.GetCurrent().GetActivatedEventArgs();
ExtendedActivationKind kind = args.Kind;
 
 
switch (args.Kind)
{
     case ExtendedActivationKind.Launch:
         break;
     case ExtendedActivationKind.ToastNotification:
         break;
     case ExtendedActivationKind.VoiceCommand:
         break;
     case ExtendedActivationKind.File:
         break;
     case ExtendedActivationKind.Protocol:
         IProtocolActivatedEventArgs protocoldata = args.Data as IProtocolActivatedEventArgs;
         Uri uri = protocoldata.Uri;
 
         break;
     case ExtendedActivationKind.StartupTask:
         break;
     default:
         break;
}

Thank you.

Jeanine