Your app now includes the Flutter module as a dependency.
  You can follow the next steps in the
  Adding a Flutter screen to an Android app.

Option B - Depend on the module’s source code

This option enables a one-step build for both your
Android project and Flutter project. This option is
convenient when you work on both parts simultaneously
and rapidly iterate, but your team must install the
Flutter SDK to build the host app.

Include the Flutter module as a subproject in the host app’s
settings.gradle:

// Include the host app project.

include

':app'

// assumed existing content

setBinding

new

Binding

([

gradle:

this

]))

// new

evaluate

new

File