Android/Gradle/app/src/main/res/xml/input_service.xml

<?xml version="1.0" encoding="utf-8"?>

<input-method xmlns:android="http://schemas.android.com/apk/res/android"
  android:isDefault="false"
  >

  <subtype
    android:label="@string/inputService_type"
   />
</input-method>