How do I set a custom notification icon for Android push notifications in Unity?

To display a custom icon for push notifications on Android, you need to add the icon file to your project's resources and declare it in the AndroidManifest.xml.

Note: For modern Android versions, the status bar icon must be monochrome (white with a transparent background).

Follow these steps:

1. Prepare Your Icon: Create your notification icon as a small, white icon on a transparent background (e.g., notification_icon.png).

2. Place the Icon File: In your Unity project, place the icon file in the following directory: Assets/Plugins/Android/pushwoosh-resources.androidlib/res/drawable/

   If this directory does not exist, you may need to create it.

3. Update AndroidManifest.xml: Open your main manifest file, typically located at Assets/Plugins/Android/AndroidManifest.xml. Add the following <meta-data> tag inside the <application> tag:

   <application ...>
       <!-- Other tags like activity, service, etc. -->
   
       <meta-data 
           android:name="com.pushwoosh.notification_icon" 
           android:resource="@drawable/notification_icon" />
   
   </application>
   

4. Important: Replace notification_icon with the name of your icon file, without the .png extension. After rebuilding your app, new notifications should display your custom icon.