Usar la aplicación APKPure
Obtener Dynamic app icon demo versión histórica en Android
Este es un ejemplo que muestra cómo cambiar el ícono de su aplicación mediante programación.
This is an example showing how to change your app icon programatically without depending on specific launcher.
The "trick" is to make use of (which should be overlooked by many developers) in Android Manifest. Each is:
1. Representing an app icon
2 .Can be enabled or disabled to make the desired app icon to be either shown or hidden in the launcher