session-android/app/src/main/res/layout/prompt_passphrase_activity.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                xmlns:tools="http://schemas.android.com/tools"
                xmlns:app="http://schemas.android.com/apk/res-auto"
                android:id="@+id/prompt_layout"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical"
                tools:context="org.thoughtcrime.securesms.PassphrasePromptActivity">

    <View android:id="@+id/shim"
          android:layout_width="match_parent"
          android:layout_height="1dp"
          android:layout_centerVertical="true"
          android:visibility="invisible"/>

    <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_above="@id/shim">

    </FrameLayout>

    <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:layout_alignParentTop="true">

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="64dp"
            android:src="@drawable/ic_launcher_foreground"
            android:layout_gravity="center" />

    </androidx.appcompat.widget.Toolbar>

    <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="30dp"
            android:layout_marginEnd="30dp"
            android:orientation="vertical"
            android:gravity="center_horizontal"
            android:layout_centerInParent="true"
            android:padding="20dp">

        <TextView
            style="@style/Signal.Text.Body"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Session is Locked"
            android:textStyle="bold"
            android:textSize="@dimen/large_font_size"
            android:textAlignment="center"
            android:layout_marginBottom="32dp" />

        <ImageView
            android:id="@+id/fingerprint_auth_container"
            android:src="@drawable/ic_fingerprint_white_48dp"
            android:background="@drawable/circle_tintable"
            android:backgroundTint="?colorAccent"
            android:padding="20dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginBottom="32dp"
            tools:visibility="visible"/>

        <Button
            style="@style/Widget.Session.Button.Common.ProminentOutline"
            android:id="@+id/lock_screen_auth_container"
            android:layout_width="196dp"
            android:layout_height="@dimen/medium_button_height"
            android:text="Tap to Unlock"/>

    </LinearLayout>
</RelativeLayout>