Guideline and barrier XML

gistfile1.txt

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

 <TextView
     android:text="this is a variable lenght text"
     android:layout_marginTop="8dp"
     android:layout_marginEnd="8dp"
     android:layout_marginStart="8dp"
     app:layout_constraintStart_toStartOf="parent"
     app:layout_constraintEnd_toStartOf="@+id/guideline"
     app:layout_constraintTop_toTopOf="parent"
     android:id="@+id/text1"
     android:layout_width="0dp"
     android:layout_height="wrap_content"/>

    <TextView
        android:text="this is another textview with variable lenght"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/guideline"
        app:layout_constraintTop_toTopOf="parent"
        android:id="@+id/text2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"/>

    <androidx.constraintlayout.widget.Barrier
        android:id="@+id/barrier"
        app:barrierDirection="bottom"
        app:constraint_referenced_ids="text1,text2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <Button
        android:id="@+id/button"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:text="I am below two views"
        android:layout_marginStart="8dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/barrier"
        android:layout_width="200dp"
        android:layout_height="56dp"/>


</androidx.constraintlayout.widget.ConstraintLayout>