BenchmarkFramework/app/src/main/res/layout/chart.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    android:orientation="vertical">


    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbarId"
        android:minHeight="?attr/actionBarSize"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:titleTextColor="@android:color/white"
        android:background="?attr/colorPrimary">

        <Button
            android:id="@+id/saveButtonId"
            android:text="SAVE"
            android:textColor="#FFFFFF"
            android:textSize="12sp"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:layout_gravity="right"
            android:background="@drawable/buttonshape_chart"
            >
        </Button>

    </android.support.v7.widget.Toolbar>


    <com.github.mikephil.charting.charts.HorizontalBarChart
      android:id="@+id/chartId"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />

</LinearLayout>