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

    <com.xxmassdeveloper.mpchartexample.view.MyPieChart
        android:id="@+id/chart1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    

</RelativeLayout>