Signal-Android/app/src/main/res/layout/verify_display_fragment.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="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:fillViewport="true">

    <org.thoughtcrime.securesms.util.views.DarkOverflowToolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="56dp"
        android:theme="?attr/settingsToolbarStyle"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navigationIcon="@drawable/ic_arrow_left_24"
        app:titleTextAppearance="@style/Signal.Text.Title"
        app:navigationContentDescription="@string/DSLSettingsToolbar__navigate_up"
        tools:title="@string/AndroidManifest__verify_safety_number" />

    <ScrollView
        android:id="@+id/scroll_view"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:fillViewport="true"
        app:layout_constraintTop_toBottomOf="@id/toolbar"
        app:layout_constraintBottom_toTopOf="@id/verify_button_container">

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:background="@color/signal_background_primary"
            android:gravity="center_horizontal"
            android:orientation="vertical"
            android:layout_marginStart="36dp"
            android:layout_marginEnd="36dp">

            <LinearLayout
                android:id="@+id/qr_code_container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/verify_identity_vertical_margin"
                android:layout_marginStart="30dp"
                android:layout_marginEnd="30dp"
                android:background="@drawable/qr_code_background"
                android:orientation="vertical">

                <FrameLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:layout_marginTop="36dp">

                    <TextView
                        android:id="@+id/loading"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center"
                        android:text="@string/verify_display_fragment__loading"
                        android:textSize="20sp" />

                    <org.thoughtcrime.securesms.components.SquareImageView
                        android:id="@+id/qr_code"
                        android:layout_width="164dp"
                        android:layout_height="164dp"
                        android:layout_gravity="center_horizontal"
                        android:visibility="invisible"
                        tools:src="@drawable/ic_about_mc_80"
                        tools:visibility="visible" />

                    <org.thoughtcrime.securesms.components.SquareImageView
                        android:id="@+id/qr_verified"
                        android:layout_width="100dp"
                        android:layout_height="100dp"
                        android:layout_gravity="center"
                        android:background="@drawable/circle_tintable"
                        android:backgroundTint="@color/green_500"
                        android:src="@drawable/ic_check_white_48dp"
                        android:visibility="gone"
                        tools:visibility="visible" />
                </FrameLayout>

                <TextSwitcher
                    android:id="@+id/tap_label"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="20dp"
                    android:layout_marginBottom="27dp"
                    android:inAnimation="@android:anim/fade_in"
                    android:outAnimation="@android:anim/fade_out">

                    <TextView
                        style="@style/Signal.Text.Preview"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="bottom|center_horizontal"
                        android:text="@string/verify_display_fragment__tap_to_scan"
                        android:textColor="@color/core_grey_50"
                        android:textSize="11sp" />

                    <TextView
                        style="@style/Signal.Text.Preview"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="bottom|center_horizontal"
                        android:text="@string/verify_display_fragment__successful_match"
                        android:textColor="@color/core_grey_50"
                        android:textSize="11sp" />

                </TextSwitcher>

            </LinearLayout>

            <TableLayout
                android:id="@+id/number_table"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/verify_identity_vertical_margin"
                android:clickable="true"
                android:focusable="true">

                <TableRow
                    android:clickable="false"
                    android:focusable="false"
                    android:gravity="center_horizontal">

                    <TextView
                        android:id="@+id/code_first"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        tools:text="22934" />

                    <TextView
                        android:id="@+id/code_second"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="56944" />

                    <TextView
                        android:id="@+id/code_third"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="42738" />

                    <TextView
                        android:id="@+id/code_fourth"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="20038" />
                </TableRow>

                <TableRow android:gravity="center_horizontal">

                    <TextView
                        android:id="@+id/code_fifth"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        tools:text="34431" />

                    <TextView
                        android:id="@+id/code_sixth"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="24922" />

                    <TextView
                        android:id="@+id/code_seventh"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="58594" />

                    <TextView
                        android:id="@+id/code_eighth"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="24109" />
                </TableRow>

                <TableRow android:gravity="center_horizontal">

                    <TextView
                        android:id="@+id/code_ninth"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        tools:text="00257" />

                    <TextView
                        android:id="@+id/code_tenth"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="34956" />

                    <TextView
                        android:id="@+id/code_eleventh"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="32440" />

                    <TextView
                        android:id="@+id/code_twelth"
                        style="@style/IdentityKey"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="20dp"
                        tools:text="15774" />
                </TableRow>
            </TableLayout>

            <TextView
                android:id="@+id/description"
                style="@style/TextAppearance.Signal.Body2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="30dp"
                android:layout_marginTop="@dimen/verify_identity_vertical_margin"
                android:layout_marginEnd="30dp"
                android:gravity="center"
                android:lineSpacingExtra="3sp"
                android:text="@string/verify_display_fragment__to_verify_the_security_of_your_end_to_end_encryption_with_s" />
        </LinearLayout>
    </ScrollView>

    <View
        android:id="@+id/toolbar_shadow"
        android:layout_width="match_parent"
        android:layout_height="5dp"
        android:visibility="gone"
        android:background="@drawable/toolbar_shadow"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/toolbar"
        tools:visibility="visible" />

    <View
        android:id="@+id/verify_identity_bottom_shadow"
        android:layout_width="match_parent"
        android:layout_height="5dp"
        android:background="@drawable/bottom_toolbar_shadow"
        android:visibility="gone"
        app:layout_constraintBottom_toTopOf="@id/verify_button_container" />
    <FrameLayout
        android:id="@+id/verify_button_container"
        android:layout_width="match_parent"
        android:layout_height="96dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="parent">
        <com.google.android.material.button.MaterialButton
            android:id="@+id/verify_button"
            style="@style/Signal.Widget.Button.Large.Primary"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:layout_marginStart="48dp"
            android:layout_marginTop="16dp"
            android:layout_marginEnd="48dp"
            android:text="@string/verify_display_fragment__mark_as_verified"
            android:textAllCaps="false"
            android:textColor="@color/signal_accent_primary"
            app:backgroundTint="@color/signal_inverse_transparent_10" />
    </FrameLayout>
</androidx.constraintlayout.widget.ConstraintLayout>