How can NotificationListenerService used in MAUI?

Question

I'm trying to listen to notifications of other apps and for that purpose I tried to utilize NotificationListenerService.

I have seen several examples from Xamarin, but nothing seems to work.

So how is it done in MAUI? How is the NotificationListenerService accessed?

Well, I had already declared the service in the Android manifest file.

<service android:name=".NotificationListener"
android:label="@string/NotificationListener"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
	<intent-filter>
		<action android:name="android.service.notification.NotificationListenerService" />
	</intent-filter>
</service>

Yet when I try to extend the class:

public class NLService : NotificationListenerService
{
    
}

I get the following error:

CS0246: The type or namespace name could not be found (are you missing a using directive or an assembly reference?)

Answer 1

Hello,

I noticed that there is a duplicate thread on SO- How can NotificationListenerService used in MAUI? - Stack Overflow

CS0246: The type or namespace name could not be found (are you missing a using directive or an assembly reference?

Solution: adding conditional compilation

#if ANDROID

#endif

See .NET MAUI invoking platform code - .NET MAUI | Microsoft Learn

Best Regards,

Wenyan Zhang

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Answer 2

See docs

https://learn.microsoft.com/en-us/dotnet/api/android.service.notification.notificationlistenerservice?view=net-android-34.0