wulkanowy-mirror/app/src/main/res/layout/fragment_exam.xml

<FrameLayout 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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginBottom="50dp">

        <ProgressBar
            android:id="@+id/examProgress"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:indeterminate="true" />

        <android.support.v4.widget.SwipeRefreshLayout
            android:id="@+id/examSwipe"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <android.support.v7.widget.RecyclerView
                android:id="@+id/examRecycler"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />

        </android.support.v4.widget.SwipeRefreshLayout>

        <LinearLayout
            android:id="@+id/examEmpty"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:orientation="vertical"
            android:padding="10dp"
            android:visibility="gone">

            <android.support.v7.widget.AppCompatImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:minWidth="100dp"
                android:minHeight="100dp"
                app:srcCompat="@drawable/ic_menu_main_exam_24dp"
                app:tint="?android:attr/textColorPrimary"
                tools:ignore="contentDescription" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="20dp"
                android:gravity="center"
                android:text="@string/exam_no_items"
                android:textSize="20sp" />
        </LinearLayout>
    </android.support.design.widget.CoordinatorLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_gravity="bottom"
        android:background="@android:color/white"
        android:elevation="10dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/examPreviousButton"
            style="@style/Widget.AppCompat.Button.Borderless"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:drawablePadding="4dp"
            android:gravity="start|center"
            android:text="@string/all_prev"
            android:textAlignment="gravity" />

        <TextView
            android:id="@+id/examNavDate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:text="@string/app_name" />

        <Button
            android:id="@+id/examNextButton"
            style="@style/Widget.AppCompat.Button.Borderless"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="end"
            android:layout_weight="1"
            android:drawablePadding="4dp"
            android:gravity="end|center"
            android:text="@string/all_next"
            android:textAlignment="gravity" />
    </LinearLayout>
</FrameLayout>