MPChartExample/src/com/xxmassdeveloper/mpchartexample/FilledLineActivity.java

package com.xxmassdeveloper.mpchartexample;

import android.graphics.Color;
import android.os.Bundle;
import android.view.WindowManager;

import com.github.mikephil.charting.charts.LineChart;
import com.github.mikephil.charting.components.Legend;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.LineData;
import com.github.mikephil.charting.data.LineDataSet;
import com.github.mikephil.charting.formatter.IFillFormatter;
import com.github.mikephil.charting.interfaces.dataprovider.LineDataProvider;
import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;

import java.util.ArrayList;

public class FilledLineActivity extends DemoBase {

    private LineChart mChart;
    private int mFillColor = Color.argb(150, 51, 181, 229);

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_linechart_noseekbar);

        mChart = (LineChart) findViewById(R.id.chart1);
        mChart.setBackgroundColor(Color.WHITE);
        mChart.setGridBackgroundColor(mFillColor);
        mChart.setDrawGridBackground(true);

        mChart.setDrawBorders(true);

        // no description text
        mChart.setDescription("");

        // if disabled, scaling can be done on x- and y-axis separately
        mChart.setPinchZoom(false);

        Legend l = mChart.getLegend();
        l.setEnabled(false);

        XAxis xAxis = mChart.getXAxis();
        xAxis.setEnabled(false);

        YAxis leftAxis = mChart.getAxisLeft();
        leftAxis.setAxisMaximum(900f);
        leftAxis.setAxisMinimum(-250f);
        leftAxis.setDrawAxisLine(false);
        leftAxis.setDrawZeroLine(false);
        leftAxis.setDrawGridLines(false);

        mChart.getAxisRight().setEnabled(false);

        // add data
        setData(100, 60);

        mChart.invalidate();
    }

    private void setData(int count, float range) {

        ArrayList<Entry> yVals1 = new ArrayList<Entry>();

        for (int i = 0; i < count; i++) {
            float val = (float) (Math.random() * range) + 50;// + (float)
            // ((mult *
            // 0.1) / 10);
            yVals1.add(new Entry(i, val));
        }

        ArrayList<Entry> yVals2 = new ArrayList<Entry>();

        for (int i = 0; i < count; i++) {
            float val = (float) (Math.random() * range) + 450;// + (float)
            // ((mult *
            // 0.1) / 10);
            yVals2.add(new Entry(i, val));
        }

        LineDataSet set1, set2;

        if (mChart.getData() != null &&
                mChart.getData().getDataSetCount() > 0) {
            set1 = (LineDataSet)mChart.getData().getDataSetByIndex(0);
            set2 = (LineDataSet)mChart.getData().getDataSetByIndex(1);
            set1.setValues(yVals1);
            set2.setValues(yVals2);
            mChart.getData().notifyDataChanged();
            mChart.notifyDataSetChanged();
        } else {
            // create a dataset and give it a type
            set1 = new LineDataSet(yVals1, "DataSet 1");

            set1.setAxisDependency(YAxis.AxisDependency.LEFT);
            set1.setColor(Color.rgb(255, 241, 46));
            set1.setDrawCircles(false);
            set1.setLineWidth(2f);
            set1.setCircleRadius(3f);
            set1.setFillAlpha(255);
            set1.setDrawFilled(true);
            set1.setFillColor(Color.WHITE);
            set1.setHighLightColor(Color.rgb(244, 117, 117));
            set1.setDrawCircleHole(false);
            set1.setFillFormatter(new IFillFormatter() {
                @Override
                public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
                    return mChart.getAxisLeft().getAxisMinimum();
                }
            });

            // create a dataset and give it a type
            set2 = new LineDataSet(yVals2, "DataSet 2");
            set2.setAxisDependency(YAxis.AxisDependency.LEFT);
            set2.setColor(Color.rgb(255, 241, 46));
            set2.setDrawCircles(false);
            set2.setLineWidth(2f);
            set2.setCircleRadius(3f);
            set2.setFillAlpha(255);
            set2.setDrawFilled(true);
            set2.setFillColor(Color.WHITE);
            set2.setDrawCircleHole(false);
            set2.setHighLightColor(Color.rgb(244, 117, 117));
            set2.setFillFormatter(new IFillFormatter() {
                @Override
                public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
                    return mChart.getAxisLeft().getAxisMaximum();
                }
            });

            ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
            dataSets.add(set1); // add the datasets
            dataSets.add(set2);

            // create a data object with the datasets
            LineData data = new LineData(dataSets);
            data.setDrawValues(false);

            // set data
            mChart.setData(data);
        }
    }
}