This tutorial will help you to create a Pyramid chart in android. In this process, pyramid chart shapes look like triangle and divided into multiple sections. Each Sections represent value of entity from provided data set. Follow below steps to complete process.

Step1- Add Library to Project as dependency

Open app's build.gradle file and put following code.

repositories {
    maven {
        url 'https://dl.bintray.com/sj/maven/'
    }
}

dependencies {
    compile 'com.numetriclabz.numandroidcharts:numandroidcharts:1.0.6'
}

Step2- Add chart layout

To add pyramid chart layout, open main_activity.xml file and put this code

<com.numetriclabz.pyramidchart.PyramidChart
    android:layout_width="wrap_content"
    android:layout_height="500dp"
    android:id="@+id/pyramid"/>

Step3- Create a MainActivity

Now, create MainActivity class and Initialize Chart in Activity.

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        PyramidChart pyramidChart = (PyramidChart) findViewById(R.id.pyramid);

        List<ChartData> values = new ArrayList<>();

        values.add(new ChartData("log out", 400));
        values.add(new ChartData("unique session", 500));
        values.add(new ChartData("unique visitors", 1000));
        values.add(new ChartData("unique visits", 2000));
        values.add(new ChartData("visits", 3000));

        pyramidChart.setData(values);
    }
}