motionlayout_step_1.xml

<androidx.constraintlayout.motion.widget.MotionLayout
    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"
    app:layoutDescription="@xml/MotionScene을 정의한 xml파일"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/iv_main"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:src="@drawable/profile"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" 
        />

</androidx.constraintlayout.motion.widget.MotionLayout>