activity_principal.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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FCF6F5F5"
    tools:context=".Principal">

    <Button
        android:id="@+id/button"
        android:layout_width="170dp"
        android:layout_height="60dp"
        android:backgroundTint="#BC8BBB"
        android:onClick="clicVer"
        android:text="Ver"
        android:textAlignment="center"
        android:textSize="30sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/editUrl" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="casual"
        android:text="Inserta una URL"
        android:textAlignment="center"
        android:textColor="#BF5CAA"
        android:textSize="30sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/imageView6"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/editUrl"
        android:layout_width="409dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="10dp"
        android:autoLink="web"
        android:autoText="true"
        android:ems="10"
        android:hint="Ejemplo: https://www.google.com"
        android:inputType="textPersonName"
        android:textColor="#7358A6"
        android:textSize="18sp"
        app:layout_constraintBottom_toTopOf="@+id/button"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/imageView6" />/>

    <ImageView
        android:id="@+id/imageView6"
        android:layout_width="310dp"
        android:layout_height="273dp"
        app:layout_constraintBottom_toTopOf="@+id/editUrl"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView3"
        app:srcCompat="@drawable/web" />

</androidx.constraintlayout.widget.ConstraintLayout>