fragment_events.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">


    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
        android:id="@+id/swiper"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toTopOf="@id/button_panel">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/list_events"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        tools:listitem="@layout/layout_event"
        />

    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>

    <LinearLayout
        android:id="@+id/button_panel"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintTop_toBottomOf="@id/swiper"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent">

        <com.google.android.material.button.MaterialButton
            android:id="@+id/feed_button"
            style="@style/Widget.AppTheme.GrayButtons"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:contentDescription="@string/feed_wall"
            android:padding="@dimen/margin_small"
            app:icon="@drawable/baseline_feed_28" />

        <com.google.android.material.button.MaterialButton
            android:id="@+id/my_wall_button"
            style="@style/Widget.AppTheme.GrayButtons"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:contentDescription="@string/my_wall"
            android:padding="@dimen/margin_small"
            app:icon="@drawable/baseline_my_feed_28" />

        <com.google.android.material.button.MaterialButton
            android:id="@+id/jobs_button"
            style="@style/Widget.AppTheme.GrayButtons"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:contentDescription="@string/jobs"
            android:padding="@dimen/margin_small"
            app:icon="@drawable/baseline_jobs_28" />

    </LinearLayout>

    <View
        android:layout_width="0dp"
        android:layout_height="1dp"
        android:layout_marginStart="@dimen/margin_default"
        android:layout_marginEnd="@dimen/margin_default"
        android:background="@color/dark_grey"
        app:layout_constraintBottom_toTopOf="@id/button_panel"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <ProgressBar
        android:id="@+id/loading"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"/>

    <TextView
        android:id="@+id/empty"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/events_empty"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/add_event_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/margin_small"
        android:contentDescription="@string/add_event"
        android:src="@drawable/baseline_event_add_28"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>