AndroidAPS/app/src/main/res/layout/activity_historybrowse.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"
    tools:context="info.nightscout.androidaps.historyBrowser.HistoryBrowseActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <TextView
            android:id="@+id/noprofile"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center_horizontal"
            android:text="@string/noprofileset"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:textColor="@android:color/holo_red_light"
            android:textStyle="bold"
            android:visibility="gone" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <androidx.appcompat.widget.AppCompatImageButton
                android:id="@+id/left"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                app:srcCompat="@drawable/ic_chevron_left_black_24dp" />

            <Button
                android:id="@+id/date"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:text="@string/date" />

            <androidx.appcompat.widget.AppCompatImageButton
                android:id="@+id/right"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                app:srcCompat="@drawable/ic_chevron_right_black_24dp" />

            <androidx.appcompat.widget.AppCompatImageButton
                android:id="@+id/end"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                app:srcCompat="@drawable/ic_last_page_black_24dp" />

            <Button
                android:id="@+id/zoom"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:text="24" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1">

                <com.jjoe64.graphview.GraphView
                    android:id="@+id/bggraph"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent" />

                <ImageButton
                    android:id="@+id/chart_menu_button"
                    android:layout_width="30dp"
                    android:layout_height="wrap_content"
                    android:layout_alignParentTop="true"
                    android:layout_alignParentEnd="true"
                    android:contentDescription="@string/chart_menu"
                    android:paddingTop="5dp"
                    app:srcCompat="@drawable/ic_arrow_drop_down_white_24dp" />

                <TextView
                    android:id="@+id/overview_iobcalculationprogess"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerInParent="true"
                    android:textSize="15sp" />

            </RelativeLayout>

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

        </LinearLayout>

    </LinearLayout>


</androidx.constraintlayout.widget.ConstraintLayout>