szkolnyplus/app/src/main/res/layout/activity_szkolny.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MainActivity"
    tools:theme="@style/AppTheme.Black">

    <FrameLayout
        android:id="@+id/rootFrame"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <pl.szczodrzynski.navlib.NavView
            android:id="@+id/navView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:animateLayoutChanges="true">

            <pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoTouch
                android:id="@+id/swipeRefreshLayout"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <FrameLayout
                    android:id="@+id/fragment"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <include layout="@layout/fragment_loading" />
                </FrameLayout>

            </pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoTouch>

        </pl.szczodrzynski.navlib.NavView>

        <TextView
            android:id="@+id/nightlyText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom|end"
            android:layout_marginHorizontal="48dp"
            android:layout_marginVertical="8dp"
            android:background="@drawable/bg_rounded_4dp"
            android:backgroundTint="#a0ff0000"
            android:fontFamily="sans-serif-light"
            android:gravity="center"
            android:padding="4dp"
            android:textAllCaps="true"
            android:textSize="12sp"
            android:textStyle="bold"
            tools:text="Nightly\n20200503" />
    </FrameLayout>

</layout>