legado/app/src/main/res/layout/activity_welcome.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"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:animateLayoutChanges="true"
    android:fitsSystemWindows="true">

    <LinearLayout
        android:id="@+id/ll_info"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <ImageView
            android:layout_width="56dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="48dp"
            android:scaleType="centerCrop"
            android:src="@drawable/ic_launcher_foreground" />

        <TextView
            android:id="@+id/tv_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginHorizontal="16dp"
            android:text="@string/welcome_title"
            android:textSize="36sp"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/tv_summary"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="16sp"
            android:layout_marginHorizontal="16dp"
            android:layout_marginTop="8dp"
            android:layout_marginBottom="16dp"
            android:text="@string/first_read"
            android:textStyle="bold" />

        <com.google.android.material.progressindicator.LinearProgressIndicator
            android:id="@+id/progress_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:indicatorColor="?attr/colorSecondary"
            app:waveAmplitude="4dp"
            app:waveSpeed="32dp"
            app:wavelength="80dp" />
    </LinearLayout>

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginTop="8dp"
        android:layout_weight="1"
        app:layout_constraintBottom_toTopOf="@id/btnNext"
        app:layout_constraintTop_toBottomOf="@id/ll_info" />

    <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
        android:id="@+id/btnNext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="end"
        android:layout_margin="16dp"
        android:text="@string/text"
        app:icon="@drawable/ic_arrow_right"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>