zumo_2.0_android/app/src/main/res/layout/activity_setting.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
  android:id="@+id/recycler_view_setting"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:layout_marginStart="25dp"
  android:layout_marginEnd="25dp"
  />
</LinearLayout>