<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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"
android:background="
@color/background">
<TextView
android:id="@+id/tv1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="80dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="80dp"
android:background="
@color/green"
app:layout_constraintEnd_toEndOf="@+id/tv2"
app:layout_constraintStart_toStartOf="@+id/tv2"
app:layout_constraintTop_toBottomOf="@+id/tv2" />
<TextView
android:id="@+id/tv2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginTop="32dp"
android:layout_marginEnd="32dp"
android:background="
@color/blue"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>