<?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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".TestActivity">

    <Spinner
        android:id="@+id/testspinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="30dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="@+id/setViewModel"
        app:layout_constraintEnd_toEndOf="@+id/setViewModel"/>

    <Button
        android:id="@+id/setViewModel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="set View Model"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.498"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.149" />
</androidx.constraintlayout.widget.ConstraintLayout>