AppUriHandler not working for host starting with '*.' while using uap5

Question

Hi Team,

I am trying to enable my app for websites using app uri handlers.
I am following this documentation :
https://learn.microsoft.com/en-us/uwp/schemas/appxpackage/uapmanifestschema/element-uap5-host

I have given the appurihandler details as below:
<uap3:AppUriHandler>
<uap5:Host Name="*.crm.dev.com" />
</uap3:AppUriHandler>

But i get a warning: The element 'AppUriHandler' in namespace 'http://schemas.microsoft.com/appx/manifest/uap/windows10/3' has invalid child element 'Host' in namespace 'http://schemas.microsoft.com/appx/manifest/uap/windows10/5'. List of possible elements expected: 'Host' in namespace 'http://schemas.microsoft.com/appx/manifest/uap/windows10/3'

And when I click on the link: (https://abc123.crm.dev.com/answers), the app does not launch and the link is opened on the browser.

Please let me know what is causing the issue here. I have followed exactly as shown in the documentation mentioned above.

Thanks and Regards,
Rashmi R

Answer 1

Hello,

Welcome to Microsoft Q&A!

Please refer to this document for handling URLs with apps: Enable apps for websites using app URI handlers.

In the sample code, uap5 namespace is not required.

This is a simple code example:

<Package  
  ...  
  xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"  
  IgnorableNamespaces="uap mp uap3">  
<Applications>  
  <Application ... >  
      ...  
      <Extensions>  
         <uap3:Extension Category="windows.appUriHandler">  
          <uap3:AppUriHandler>  
            <uap3:Host Name="msn.com" />  
          </uap3:AppUriHandler>  
        </uap3:Extension>  
      </Extensions>  
  </Application>  
</Applications>  
</Package>  
  

In addition, you also need to add the handling of OnActivated life cycle events in App.xaml.cs, in which to respond to the launch through Uri

protected override void OnActivated(IActivatedEventArgs e)  
{  
    Frame rootFrame = Window.Current.Content as Frame;  
    if (rootFrame == null)  
    {  
        ...  
    }  
  
    // Check ActivationKind, Parse URI, and Navigate user to content  
    Type deepLinkPageType = typeof(MainPage);  
    if (e.Kind == ActivationKind.Protocol)  
    {  
        var protocolArgs = (ProtocolActivatedEventArgs)e;          
        switch (protocolArgs.Uri.AbsolutePath)  
        {  
            case "/":  
                break;  
            case "/index.html":  
                break;  
            case "/sports.html":  
                deepLinkPageType = typeof(SportsPage);  
                break;  
            case "/technology.html":  
                deepLinkPageType = typeof(TechnologyPage);  
                break;  
            case "/business.html":  
                deepLinkPageType = typeof(BusinessPage);  
                break;  
            case "/science.html":  
                deepLinkPageType = typeof(SciencePage);  
                break;  
        }  
    }  
  
    if (rootFrame.Content == null)  
    {  
        // Default navigation  
        rootFrame.Navigate(deepLinkPageType, e);  
    }  
  
    // Ensure the current window is active  
    Window.Current.Activate();  
}  

After that, you can press the Win+R key combination and enter the URL to check whether it takes effect.

Thanks.