Android Studio tries to warn us that if the project/application we create ignores this warning, it could potentially not be indexed by Google, so consider implementing at least one ACTION-VIEW.
App is not indexable by Google Search, at least one Activity with an ACTION-VIEW intent filter
Of course, this is part of SEO which contributes to increasing the opportunity for traffic flow from visitors/users.
Solution
Add ACTION-VIEW, and place it between the <intent-filter> tags.
<action android:name="android.intent.action.VIEW" />Okay, that's it, why bother, it's done! Good job!