AndroidAPS/app/src/main/res/layout/overview_fragment.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="info.nightscout.androidaps.plugins.Overview.OverviewFragment">


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

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

            <TextView
                android:id="@+id/overview_bg"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left|top"
                android:textSize="100dp" />

            <LinearLayout
                android:orientation="vertical"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_gravity="top"
                android:layout_marginTop="10dp">

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textAppearance="?android:attr/textAppearanceMedium"
                    android:id="@+id/overview_timeago"
                    android:layout_marginLeft="10dp" />

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textAppearance="?android:attr/textAppearanceMedium"
                    android:id="@+id/overview_delta"
                    android:layout_marginLeft="10dp" />
            </LinearLayout>

        </LinearLayout>

        <com.jjoe64.graphview.GraphView
            android:id="@+id/overview_bggraph"
            android:layout_width="match_parent"
            android:layout_height="200dip" />
    </LinearLayout>

</FrameLayout>