CandleStickChartActivity.java

package com.xxmassdeveloper.mpchartexample;

import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
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 android.widget.Toast;

import com.github.mikephil.charting.charts.CandleStickChart;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.XAxis.XAxisPosition;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.components.YAxis.AxisDependency;
import com.github.mikephil.charting.data.CandleData;
import com.github.mikephil.charting.data.CandleDataSet;
import com.github.mikephil.charting.data.CandleEntry;
import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;

import java.util.ArrayList;

public class CandleStickChartActivity extends DemoBase implements OnSeekBarChangeListener {

    private CandleStickChart 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_candlechart);

        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 = (CandleStickChart) findViewById(R.id.chart1);

        mChart.setDescription("");

        // if more than 60 entries are displayed in the chart, no values will be
        // drawn
        mChart.setMaxVisibleValueCount(60);

        // scaling can now only be done on x- and y-axis separately
        mChart.setPinchZoom(false);

        mChart.setDrawGridBackground(false);

        XAxis xAxis = mChart.getXAxis();
        xAxis.setPosition(XAxisPosition.BOTTOM);
        xAxis.setSpaceBetweenLabels(2);
        xAxis.setDrawGridLines(false);

        YAxis leftAxis = mChart.getAxisLeft();  
//        leftAxis.setEnabled(false);
        leftAxis.setLabelCount(7);
        leftAxis.setDrawGridLines(false);
        leftAxis.setDrawAxisLine(false);
        leftAxis.setStartAtZero(false);
        
        YAxis rightAxis = mChart.getAxisRight();
        rightAxis.setEnabled(false);
//        rightAxis.setStartAtZero(false);

        // setting data
        mSeekBarX.setProgress(40);
        mSeekBarY.setProgress(100);
        
        mChart.getLegend().setEnabled(false);

        // Legend l = mChart.getLegend();
        // l.setPosition(LegendPosition.BELOW_CHART_CENTER);
        // l.setFormSize(8f);
        // l.setFormToTextSpace(4f);
        // l.setXEntrySpace(6f);

        // mChart.setDrawLegend(false);
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {
            case R.id.actionToggleHighlight: {
                if (mChart.isHighlightEnabled())
                    mChart.setHighlightEnabled(false);
                else
                    mChart.setHighlightEnabled(true);
                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.actionToggleStartzero: {
                mChart.getAxisLeft().setStartAtZero(!mChart.getAxisLeft().isStartAtZeroEnabled());
                mChart.getAxisRight().setStartAtZero(!mChart.getAxisRight().isStartAtZeroEnabled());
                mChart.invalidate();
                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;
            }
            case R.id.actionSave: {
                if (mChart.saveToGallery("title" + System.currentTimeMillis(), 50)) {
                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
                            Toast.LENGTH_SHORT).show();
                } else
                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
                            .show();
                break;
            }
        }
        return true;
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        
        int prog = (mSeekBarX.getProgress() + 1);

        tvX.setText("" + prog);
        tvY.setText("" + (mSeekBarY.getProgress()));
        
        mChart.resetTracking();

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

        for (int i = 0; i < prog; i++) {
            float mult = (mSeekBarY.getProgress() + 1);
            float val = (float) (Math.random() * 40) + mult;
            
            float high = (float) (Math.random() * 9) + 8f;
            float low = (float) (Math.random() * 9) + 8f;
            
            float open = (float) (Math.random() * 6) + 1f;
            float close = (float) (Math.random() * 6) + 1f;

            boolean even = i % 2 == 0;

            yVals1.add(new CandleEntry(i, val + high, val - low, even ? val + open : val - open,
                    even ? val - close : val + close));
        }

        ArrayList<String> xVals = new ArrayList<String>();
        for (int i = 0; i < prog; i++) {
            xVals.add("" + (1990 + i));
        }

        CandleDataSet set1 = new CandleDataSet(yVals1, "Data Set");
        set1.setAxisDependency(AxisDependency.LEFT);
//        set1.setColor(Color.rgb(80, 80, 80));
        set1.setShadowColor(Color.DKGRAY);
        set1.setShadowWidth(0.7f);
        set1.setDecreasingColor(Color.RED);
        set1.setDecreasingPaintStyle(Paint.Style.STROKE);
        set1.setIncreasingColor(Color.rgb(122, 242, 84));
        set1.setIncreasingPaintStyle(Paint.Style.FILL);

        CandleData data = new CandleData(xVals, set1);
        
        mChart.setData(data);
        mChart.invalidate();
    }

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

    }

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

    }
}