These are the default launcher icons & splash screens for NativeScript apps.

The splash screen and the iOS Icon is exported from splash_screen_and_icon.afdesign to the correct folders automatically.

The Android Icon has been generated using AndroidStudio and copied here, so there is no source file for the icons themselves!

To generate a new icon, use AndroidStudio and follow this article: https://nstudio.io/blog/adaptive-icons

To use the new adaptive icon, make sure AndroidManifest.xml has

android:icon="@mipmap/ic_launcher"