app/src/main/res/layout/activity_tags_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:id="@+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activities.TagsSelectorActivity">
<TextView
android:id="@+id/title_form"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/teal_200"
android:text="@string/tag_selection_instructions"
android:textSize="20sp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_tag_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="60dp"
android:paddingBottom="50dp"
android:scrollbars="vertical"
app:layoutManager="GridLayoutManager"
app:layout_constraintBottom_toTopOf="@+id/DoneTagButton"
app:layout_constraintTop_toBottomOf="@+id/title_form"
app:spanCount="2"
tools:layout_editor_absoluteX="206dp" />
<Button
android:id="@+id/DoneTagButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text='@string/tag_save_button'
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.95"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>