<?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"
xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
android:id="@+id/biometric_prompt_constraint_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">

    <ImageView
        android:id="@+id/background"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:contentDescription="@string/biometric_dialog_empty_space_description"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <View
        android:id="@+id/panel"
        style="@style/AuthCredentialPanelStyle"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:paddingHorizontal="16dp"
        android:paddingVertical="16dp"
        android:visibility="visible"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintRight_toLeftOf="@+id/rightGuideline"
        app:layout_constraintLeft_toLeftOf="@+id/leftGuideline"
        app:layout_constraintTop_toTopOf="@+id/topGuideline" />

    <com.android.systemui.biometrics.BiometricPromptLottieViewWrapper
        android:id="@+id/biometric_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:srcCompat="@tools:sample/avatars" />

    <com.android.systemui.biometrics.BiometricPromptLottieViewWrapper
        android:id="@+id/biometric_icon_overlay"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_gravity="center"
        android:contentDescription="@null"
        android:scaleType="fitXY"
        android:importantForAccessibility="no"
        app:layout_constraintBottom_toBottomOf="@+id/biometric_icon"
        app:layout_constraintEnd_toEndOf="@+id/biometric_icon"
        app:layout_constraintStart_toStartOf="@+id/biometric_icon"
        app:layout_constraintTop_toTopOf="@+id/biometric_icon" />

    <ScrollView
        android:id="@+id/scrollView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:paddingBottom="16dp"
        android:paddingLeft="24dp"
        android:paddingRight="12dp"
        android:paddingTop="24dp"
        android:fadeScrollbars="false"
        app:layout_constraintBottom_toTopOf="@+id/button_bar"
        app:layout_constraintRight_toLeftOf="@+id/midGuideline"
        app:layout_constraintLeft_toLeftOf="@id/leftGuideline"
        app:layout_constraintTop_toTopOf="@+id/topGuideline">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/innerConstraint"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/logo"
                android:contentDescription="@string/biometric_dialog_logo"
                android:layout_width="@dimen/biometric_prompt_logo_size"
                android:layout_height="@dimen/biometric_prompt_logo_size"
                android:layout_gravity="center"
                android:scaleType="fitXY"
                android:visibility="visible"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

            <TextView
                android:id="@+id/logo_description"
                style="@style/TextAppearance.AuthCredential.LogoDescription"
                android:layout_width="0dp"
                android:layout_height="@dimen/biometric_prompt_logo_size"
                android:gravity="start|center_vertical"
                android:textAlignment="viewStart"
                android:layout_marginStart="16dp"
                app:layout_goneMarginStart="0dp"
                app:layout_constraintBottom_toTopOf="@+id/title"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toEndOf="@+id/logo"
                app:layout_constraintTop_toTopOf="parent" />

            <TextView
                android:id="@+id/title"
                style="@style/TextAppearance.AuthCredential.Title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="@integer/biometric_dialog_text_gravity"
                android:paddingHorizontal="0dp"
                android:textAlignment="viewStart"
                app:layout_constraintBottom_toTopOf="@+id/subtitle"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.0"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/logoBarrier"
                app:layout_constraintVertical_bias="0.0"
                app:layout_constraintVertical_chainStyle="packed" />

            <TextView
                android:id="@+id/subtitle"
                style="@style/TextAppearance.AuthCredential.Subtitle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="16dp"
                android:gravity="@integer/biometric_dialog_text_gravity"
                android:paddingHorizontal="0dp"
                android:textAlignment="viewStart"
                app:layout_constraintBottom_toTopOf="@+id/contentBarrier"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.0"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/title" />

            <LinearLayout
                android:id="@+id/customized_view_container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="24dp"
                android:gravity="center_vertical"
                android:orientation="vertical"
                android:visibility="gone"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.0"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/subtitle"
                app:layout_constraintVertical_bias="0.0" />

            <TextView
                android:id="@+id/description"
                style="@style/TextAppearance.AuthCredential.Description"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="24dp"
                android:gravity="@integer/biometric_dialog_text_gravity"
                android:paddingHorizontal="0dp"
                android:textAlignment="viewStart"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.0"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/subtitle"
                app:layout_constraintVertical_bias="0.0" />

            <androidx.constraintlayout.widget.Barrier
                android:id="@+id/logoBarrier"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                app:barrierMargin="12dp"
                app:barrierAllowsGoneWidgets="false"
                app:barrierDirection="bottom"
                app:constraint_referenced_ids="logo_description, logo" />

            <androidx.constraintlayout.widget.Barrier
                android:id="@+id/contentBarrier"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                app:barrierAllowsGoneWidgets="false"
                app:barrierDirection="top"
                app:constraint_referenced_ids="description, customized_view_container" />

        </androidx.constraintlayout.widget.ConstraintLayout>
    </ScrollView>

    <TextView
        android:id="@+id/indicator"
        style="@style/TextAppearance.AuthCredential.Indicator"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:accessibilityLiveRegion="assertive"
        android:fadingEdge="horizontal"
        android:gravity="center_horizontal"
        android:scrollHorizontally="true"
        android:maxLines="2"
        app:layout_constraintBottom_toTopOf="@+id/button_bar"
        app:layout_constraintEnd_toEndOf="@+id/biometric_icon"
        app:layout_constraintStart_toStartOf="@+id/biometric_icon"
        app:layout_constraintTop_toBottomOf="@+id/biometric_icon"
        app:layout_constraintVertical_bias="0.0"
        app:layout_constraintWidth_max="@dimen/biometric_dialog_indicator_max_width" />

    <include
        android:id="@+id/button_bar"
        layout="@layout/biometric_prompt_button_bar"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toTopOf="@id/bottomGuideline"
        app:layout_constraintEnd_toEndOf="@id/scrollView"
        app:layout_constraintStart_toStartOf="@id/scrollView"
        app:layout_constraintTop_toBottomOf="@id/scrollView" />

    <!-- Guidelines for setting panel border -->
    <androidx.constraintlayout.widget.Barrier
        android:id="@+id/topBarrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:barrierAllowsGoneWidgets="false"
        app:barrierDirection="top"
        app:constraint_referenced_ids="scrollView" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/leftGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:guidelineUseRtl="false"
        app:layout_constraintGuide_begin="@dimen/biometric_dialog_border_padding" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/rightGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:guidelineUseRtl="false"
        app:layout_constraintGuide_end="@dimen/biometric_dialog_border_padding" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/midGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:guidelineUseRtl="false"
        app:layout_constraintGuide_begin="406dp" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/bottomGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_end="40dp" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/topGuideline"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="horizontal"
        app:layout_constraintGuide_begin="0dp" />

</androidx.constraintlayout.widget.ConstraintLayout>