app/src/main/res/layout/activity_section_selection.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".activities.SectionSelectionActivity">
<TextView
android:id="@+id/section_title_form"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/teal_200"
android:paddingBottom="0dp"
android:scrollbars="vertical"
android:text="@string/section_selection_instructions"
android:textSize="20sp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_section_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/section_title_form"
android:layout_alignParentStart="true"
android:layout_centerHorizontal="true"
android:layout_marginStart="1dp"
android:layout_marginTop="1dp"
android:paddingBottom="55dp"
android:scrollbars="vertical"
app:layoutManager="GridLayoutManager"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/section_title_form"
app:spanCount="2" />
<Button
android:id="@+id/doneSectionButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_marginTop="252dp"
android:layout_marginEnd="12dp"
android:layout_marginBottom="15dp"
android:text='@string/section_save_button'
app:layout_constraintHorizontal_bias="0.95"
app:layout_constraintVertical_bias="1.0" />
</RelativeLayout>