ring-android/app/src/main/res/layout/frag_qrcode.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="wrap_content"
    android:orientation="vertical">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="QR Code"
        android:layout_marginTop="12dp"
        android:textSize="24sp"
        android:textStyle="bold"
        android:layout_gravity="center_horizontal"
        android:textColor="@color/colorPrimary"
        android:drawableStart="@drawable/baseline_qr_code_2_black_24dp"
        android:drawableTint="@color/colorPrimary"/>

    <com.google.android.material.tabs.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:tabSelectedTextColor="@color/colorPrimary"
        app:tabIndicatorColor="@color/colorPrimary"/>

    <androidx.viewpager.widget.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="380dp" />

</LinearLayout>