session-android/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:background="@drawable/default_session_background"
                android:orientation="vertical">

    <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>

    <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:layout_marginTop="20dp">

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

    </android.support.v7.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:textColor="@color/text"
            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="@color/accent"
            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/MediumProminentOutlineButton"
            android:id="@+id/lock_screen_auth_container"
            android:layout_width="196dp"
            android:layout_height="@dimen/medium_button_height"
            android:text="Tap to Unlock" />

        <RelativeLayout android:id="@+id/password_auth_container"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginBottom="60dp"
                        tools:visibility="gone">

            <EditText android:id="@+id/passphrase_edit"
                      android:layout_width="match_parent"
                      android:layout_height="45sp"
                      android:inputType="textPassword"
                      android:layout_marginStart="50dp"
                      android:layout_marginEnd="50dp"
                      android:singleLine="true"
                      android:paddingStart="10dp"
                      android:paddingEnd="40dp"/>

            <org.thoughtcrime.securesms.components.AnimatingToggle
                    android:id="@+id/button_toggle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignRight="@+id/passphrase_edit"
                    android:layout_centerVertical="true"
                    android:layout_gravity="center"
                    android:gravity="center">

                <ImageButton android:id="@+id/passphrase_visibility"
                             android:src="?ic_visibility"
                             android:background="@drawable/touch_highlight_background"
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
                             android:paddingStart="8dp"
                             android:paddingEnd="8dp"
                             android:paddingTop="3dp"
                             android:paddingBottom="3dp"
                             android:layout_centerVertical="true" />

                <ImageButton android:id="@+id/passphrase_visibility_off"
                             android:src="?ic_visibility_off"
                             android:background="@drawable/touch_highlight_background"
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
                             android:paddingStart="8dp"
                             android:paddingEnd="8dp"
                             android:paddingTop="3dp"
                             android:paddingBottom="3dp"
                             android:layout_centerVertical="true" />

            </org.thoughtcrime.securesms.components.AnimatingToggle>

            <ImageButton android:id="@+id/ok_button"
                         android:src="?ic_arrow_forward"
                         android:contentDescription="@string/PassphrasePromptActivity_ok_button_content_description"
                         android:background="@null"
                         android:text="@string/prompt_passphrase_activity__unlock"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:layout_alignParentEnd="true"
                         android:layout_centerVertical="true"
                         android:textAppearance="?android:attr/textAppearanceMedium"
                         android:paddingStart="5dp"
                         android:paddingTop="5dp"
                         android:paddingEnd="10dp"
                         android:paddingBottom="5dp"/>
        </RelativeLayout>

    </LinearLayout>
</RelativeLayout>