session-android/res/layout/verification_pin_keyboard_view.xml

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:tools="http://schemas.android.com/tools">

    <android.inputmethodservice.KeyboardView
            android:id="@+id/keyboard_view"
            android:keyBackground="@color/grey_300"
            android:background="@color/grey_300"
            android:keyTextColor="@color/black"
            android:shadowColor="@color/transparent"
            android:keyTextSize="30sp"
            android:elevation="3dp"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

    <ProgressBar android:id="@+id/progress"
                 android:layout_gravity="center"
                 android:layout_width="96dp"
                 android:layout_height="96dp"
                 android:indeterminate="true"/>

    <org.thoughtcrime.securesms.components.SquareImageView
            android:id="@+id/success"
            android:layout_width="96dp"
            android:layout_height="96dp"
            android:layout_gravity="center"
            android:background="@drawable/circle_tintable"
            android:backgroundTint="@color/green_400"
            android:gravity="center_vertical"
            android:src="@drawable/ic_check_white_48dp"/>

    <org.thoughtcrime.securesms.components.SquareImageView
            android:id="@+id/failure"
            android:layout_width="96dp"
            android:layout_height="96dp"
            android:layout_gravity="center"
            android:background="@drawable/circle_tintable"
            android:backgroundTint="@color/green_400"
            android:gravity="center_vertical"
            android:src="@drawable/ic_close_white_48dp"/>

    <org.thoughtcrime.securesms.components.SquareImageView
            android:id="@+id/locked"
            android:layout_width="96dp"
            android:layout_height="96dp"
            android:padding="10dp"
            android:layout_gravity="center"
            android:background="@drawable/circle_tintable"
            android:backgroundTint="@color/green_400"
            android:gravity="center_vertical"
            android:src="@drawable/ic_lock_white_48dp"
            android:visibility="gone"
            tools:visibility="visible"/>


</merge>