chinwag-android/app/src/main/res/layout/fragment_timeline_notifications.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/appBarOptions"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:elevation="0dp"
            app:layout_behavior="com.keylesspalace.tusky.util.AppBarLayoutNoEmptyScrollBehavior">

            <androidx.appcompat.widget.Toolbar
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="?android:colorBackground"
                app:contentInsetStart="0dp"
                app:contentInsetLeft="0dp"
                app:contentInsetEnd="0dp"
                app:contentInsetRight="0dp"
                app:layout_scrollFlags="scroll|enterAlways">

                <LinearLayout
                    android:id="@+id/topButtonsLayout"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="horizontal">

                    <Button
                        android:id="@+id/buttonClear"
                        style="@style/TuskyButton.TextButton"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:text="@string/notifications_clear"
                        android:textSize="?attr/status_text_medium" />

                    <Button
                        android:id="@+id/buttonFilter"
                        style="@style/TuskyButton.TextButton"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:text="@string/notifications_apply_filter"
                        android:textSize="?attr/status_text_medium" />

                </LinearLayout>
            </androidx.appcompat.widget.Toolbar>
            <View
                android:layout_width="match_parent"
                android:layout_height="1dp"
                android:background="?android:attr/listDivider"
                android:layout_gravity="bottom"/>

        </com.google.android.material.appbar.AppBarLayout>

        <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
            android:id="@+id/swipeRefreshLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            >

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/recyclerView"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                />

        </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>

    </androidx.coordinatorlayout.widget.CoordinatorLayout>

    <ProgressBar
        android:id="@+id/progressBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.keylesspalace.tusky.view.BackgroundMessageView
        android:id="@+id/statusView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@android:color/transparent"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@drawable/elephant_error"
        tools:visibility="visible" />

</androidx.constraintlayout.widget.ConstraintLayout>