ScatterChartActivity.java

package com.xxmassdeveloper.mpchartexample;

import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.WindowManager;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

import com.github.mikephil.charting.charts.ScatterChart;
import com.github.mikephil.charting.components.Legend;
import com.github.mikephil.charting.components.Legend.LegendPosition;
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.ScatterData;
import com.github.mikephil.charting.data.ScatterDataSet;
import com.github.mikephil.charting.highlight.Highlight;
import com.github.mikephil.charting.interfaces.datasets.IScatterDataSet;
import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
import com.github.mikephil.charting.utils.ColorTemplate;
import com.xxmassdeveloper.mpchartexample.custom.CustomScatterShapeRenderer;
import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;

import java.util.ArrayList;
import java.util.List;

public class ScatterChartActivity extends DemoBase implements OnSeekBarChangeListener,
        OnChartValueSelectedListener {

    private ScatterChart mChart;
    private SeekBar mSeekBarX, mSeekBarY;
    private TextView tvX, tvY;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_scatterchart);

        tvX = (TextView) findViewById(R.id.tvXMax);
        tvY = (TextView) findViewById(R.id.tvYMax);

        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
        mSeekBarX.setOnSeekBarChangeListener(this);

        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
        mSeekBarY.setOnSeekBarChangeListener(this);

        mChart = (ScatterChart) findViewById(R.id.chart1);
        mChart.getDescription().setEnabled(false);
        mChart.setOnChartValueSelectedListener(this);

        mChart.setDrawGridBackground(false);
        mChart.setTouchEnabled(true);
        mChart.setMaxHighlightDistance(50f);

        // enable scaling and dragging
        mChart.setDragEnabled(true);
        mChart.setScaleEnabled(true);

        mChart.setMaxVisibleValueCount(200);
        mChart.setPinchZoom(true);

        mSeekBarX.setProgress(45);
        mSeekBarY.setProgress(100);

        Legend l = mChart.getLegend();
        l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
        l.setOrientation(Legend.LegendOrientation.VERTICAL);
        l.setDrawInside(false);
        l.setTypeface(mTfLight);
        l.setXOffset(5f);

        YAxis yl = mChart.getAxisLeft();
        yl.setTypeface(mTfLight);
        yl.setAxisMinimum(0f); // this replaces setStartAtZero(true)
        
        mChart.getAxisRight().setEnabled(false);

        XAxis xl = mChart.getXAxis();
        xl.setTypeface(mTfLight);
        xl.setDrawGridLines(false);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.scatter, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {
            case R.id.actionToggleValues: {
                List<IScatterDataSet> sets = mChart.getData()
                        .getDataSets();

                for (IScatterDataSet iSet : sets) {

                    ScatterDataSet set = (ScatterDataSet) iSet;
                    set.setDrawValues(!set.isDrawValuesEnabled());
                }

                mChart.invalidate();
                break;
            }
            case R.id.actionToggleHighlight: {
                if(mChart.getData() != null) {
                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
                    mChart.invalidate();
                }
                break;
            }
            case R.id.actionTogglePinch: {
                if (mChart.isPinchZoomEnabled())
                    mChart.setPinchZoom(false);
                else
                    mChart.setPinchZoom(true);

                mChart.invalidate();
                break;
            }
            case R.id.actionToggleAutoScaleMinMax: {
                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
                mChart.notifyDataSetChanged();
                break;
            }
            case R.id.actionSave: {
                // mChart.saveToGallery("title"+System.currentTimeMillis());
                mChart.saveToPath("title" + System.currentTimeMillis(), "");
                break;
            }
            case R.id.animateX: {
                mChart.animateX(3000);
                break;
            }
            case R.id.animateY: {
                mChart.animateY(3000);
                break;
            }
            case R.id.animateXY: {

                mChart.animateXY(3000, 3000);
                break;
            }
        }
        return true;
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

        tvX.setText("" + (mSeekBarX.getProgress() + 1));
        tvY.setText("" + (mSeekBarY.getProgress()));

        ArrayList<Entry> yVals1 = new ArrayList<Entry>();
        ArrayList<Entry> yVals2 = new ArrayList<Entry>();
        ArrayList<Entry> yVals3 = new ArrayList<Entry>();

        for (int i = 0; i < mSeekBarX.getProgress(); i++) {
            float val = (float) (Math.random() * mSeekBarY.getProgress()) + 3;
            yVals1.add(new Entry(i, val));
        }

        for (int i = 0; i < mSeekBarX.getProgress(); i++) {
            float val = (float) (Math.random() * mSeekBarY.getProgress()) + 3;
            yVals2.add(new Entry(i+0.33f, val));
        }

        for (int i = 0; i < mSeekBarX.getProgress(); i++) {
            float val = (float) (Math.random() * mSeekBarY.getProgress()) + 3;
            yVals3.add(new Entry(i+0.66f, val));
        }

        // create a dataset and give it a type
        ScatterDataSet set1 = new ScatterDataSet(yVals1, "DS 1");
        set1.setScatterShape(ScatterChart.ScatterShape.SQUARE);
        set1.setColor(ColorTemplate.COLORFUL_COLORS[0]);
        ScatterDataSet set2 = new ScatterDataSet(yVals2, "DS 2");
        set2.setScatterShape(ScatterChart.ScatterShape.CIRCLE);
        set2.setScatterShapeHoleColor(ColorTemplate.COLORFUL_COLORS[3]);
        set2.setScatterShapeHoleRadius(3f);
        set2.setColor(ColorTemplate.COLORFUL_COLORS[1]);
        ScatterDataSet set3 = new ScatterDataSet(yVals3, "DS 3");
        set3.setShapeRenderer(new CustomScatterShapeRenderer());
        set3.setColor(ColorTemplate.COLORFUL_COLORS[2]);

        set1.setScatterShapeSize(8f);
        set2.setScatterShapeSize(8f);
        set3.setScatterShapeSize(8f);

        ArrayList<IScatterDataSet> dataSets = new ArrayList<IScatterDataSet>();
        dataSets.add(set1); // add the datasets
        dataSets.add(set2);
        dataSets.add(set3);

        // create a data object with the datasets
        ScatterData data = new ScatterData(dataSets);
        data.setValueTypeface(mTfLight);

        mChart.setData(data);
        mChart.invalidate();
    }

    @Override
    public void onValueSelected(Entry e, Highlight h) {
        Log.i("VAL SELECTED",
                "Value: " + e.getY() + ", xIndex: " + e.getX()
                        + ", DataSet index: " + h.getDataSetIndex());
    }

    @Override
    public void onNothingSelected() {
        // TODO Auto-generated method stub

    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        // TODO Auto-generated method stub

    }
}