MPChartExample/res/layout/frag_simple_line.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <com.github.mikephil.charting.charts.LineChart
        android:id="@+id/lineChart1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</FrameLayout>