Feature request to be able to supply the notification icon for notification messages.

[MPoels]

I'm having trouble to set the notification icon using your package. Setting the meta "com.google.firebase.messaging.default_notification_icon" compiles but it's not shown. Overriding half your lib code for android like Diaver did seems a bit overkill for just getting the icon right, while everything else works "out of the box".

I would suggest that the Android options are expanded to be able to supply the wanted icon from the maui image resources. Something like:

		.UseFirebasePushNotifications(o =>
		{
			o.AutoInitEnabled = false;
			o.QueueFactory = new InMemoryQueueFactory();
#if ANDROID
			o.Android.NotificationActivityType = typeof(MainActivity);
			o.Android.NotificationChannels = ChannelDefines.GetAll().ToArray();				
                        o.Android.NotificationSmallIcon = "notification_icon"
#endif
		})

where "my_notifion_icon" is an image residing in "Resources/Images/" maui directory.
If that's not an option a drawable/[image] in the platform/Android library is fine too.

[thomasgalliker]

You can set the default icon in your AndroidManifest.xml, inside the Application tag:

<meta-data android:name="com.google.firebase.messaging.default_notification_icon" android:resource="@drawable/ic_notification_default" />

[thomasgalliker]

Yep. A valuable trick is to generate Android icons using Android Studio. You can add a new "image asset", select the category "notification icon" and from there it should be easy peacy. Notification icons on Android can only be black/white + transparent as far as I know. And you're right - we're also using an Android vector image as notification icon. We just placed it in the "drawable-anydpi" folder inside Android/Resources.

[MPoels]

It is even simpler! .net maui does some smart things for you.

You can put your image (png or svg) in the "Resources/Images" directory and mark is a "mauiImage"
Then you can reference it in the AndroidManifest as "@drawable/icon_notification" this keeps your Platform/Android clean. It's a matter of taste.

What also works is to put the notification under Platforms/Android/Resources/drawable

I also made use of the possibility to set a background color for the icon, I added my background color in Platforms/Android/Resources/value/colors.xml.

	<application android:allowBackup="true" android:icon="@mipmap/appicon" android:supportsRtl="true">
		<receiver android:name="com.google.firebase.iid.FirebaseInstanceIdInternalReceiver" android:exported="false" />
		<receiver android:name="com.google.firebase.iid.FirebaseInstanceIdReceiver" android:enabled="true" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">
			<intent-filter>
				<action android:name="com.google.android.c2dm.intent.RECEIVE" />
				<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
				<category android:name="${applicationId}" />
			</intent-filter>
		</receiver>

		<meta-data android:name="com.google.firebase.messaging.default_notification_icon"
				   android:resource="@drawable/icon_notification"/>
		<meta-data android:name="com.google.firebase.messaging.default_notification_color"
				   android:resource="@color/notification_color"/>

	</application>

[thomasgalliker]

Thanks for sharing. Some images I rather want to keep platform specific. I know that Android has special requirements for notification icons, so I'd rather stick to these rules. MauiImage is perfectly fine for images used in Xaml (it's just my opinion) :-)

I'm not sure if you have to declare the intent-filters. We don't have them in our maui app and it works perfectly fine.

[MPoels]

Hi, I'm not sure either, they came from the original xamarin.forms project I ported. I think they just limit the types of messages that pass thru. They are probably not a requirement but they do no harm either. As the filter represent the messages the application is interested in.

Keep up the good work you are doing, it's a great help for many maui developers to my opinion.

[thomasgalliker]

Ok, thanks! Well, the level of desperation to migrate everything from Xamarin to MAUI is huge. I see this library as a chance to learn from others - just as we do here 👍🏻