SciChart’s Android Charts are popular with traders as they are a good fit for use in real-time trading systems, even in demanding, fast moving markets.
This example demonstrates how to generate a simple Android Candlestick chart in code. The FastCandlestickRenderableSeries requires an OhlcDataSeries, which contains one X-point and four Y-points (Open, High, Low, Close).

Candles are drawn using the pens set by the setStrokeUpStyle(PenStyle), setStrokeDownStyle(PenStyle) methods and the brushes set by the setFillUpBrushStyle(BrushStyle) and setFillDownBrushStyle(BrushStyle) methods, which are used depending on whether Open > Close or not.

// Kotlin: CandlestickChartFragment.kt

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// CandlestickChartFragment.kt is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************

package com.scichart.examples.fragments.examples2d.basicChartTypes.kt

import android.view.animation.DecelerateInterpolator
import com.scichart.charting.visuals.SciChartSurface
import com.scichart.charting.visuals.axes.AutoRange
import com.scichart.data.model.DoubleRange
import com.scichart.examples.data.DataManager
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment
import com.scichart.examples.utils.scichartExtensions.*
import java.util.*

class CandlestickChartFragment : ExampleSingleChartBaseFragment() {

    override fun initExample(surface: SciChartSurface) {
        val priceSeries = DataManager.getInstance().getPriceDataIndu(activity)
        val size = priceSeries.size

        surface.suspendUpdates {
            xAxes { categoryDateAxis {
                visibleRange = DoubleRange(size - 30.0, size.toDouble())
                growBy = DoubleRange(0.0, 0.1)
            }}
            yAxes { numericAxis {
                growBy = DoubleRange(0.0, 0.1)
                autoRange = AutoRange.Always
            }}
            renderableSeries {
                fastCandlestickRenderableSeries {
                    ohlcDataSeries<Date, Double> {
                        append(priceSeries.dateData, priceSeries.openData, priceSeries.highData, priceSeries.lowData, priceSeries.closeData)
                    }
                    strokeUpStyle = SolidPenStyle(0xFF00AA00)
                    fillUpBrushStyle = SolidBrushStyle(0x8800AA00)
                    strokeDownStyle = SolidPenStyle(0xFFFF0000)
                    fillDownBrushStyle = SolidBrushStyle(0x88FF0000)

                    waveAnimation { interpolator = DecelerateInterpolator() }
                }
            }
            chartModifiers { defaultModifiers() }
        }
    }
}

// Java: CandlestickChartFragment.java

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// CandlestickChartFragment.java is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************

package com.scichart.examples.fragments.examples2d.basicChartTypes;

import android.view.animation.DecelerateInterpolator;

import androidx.annotation.NonNull;

import com.scichart.charting.model.dataSeries.IOhlcDataSeries;
import com.scichart.charting.model.dataSeries.OhlcDataSeries;
import com.scichart.charting.visuals.SciChartSurface;
import com.scichart.charting.visuals.axes.AutoRange;
import com.scichart.charting.visuals.axes.IAxis;
import com.scichart.charting.visuals.renderableSeries.FastCandlestickRenderableSeries;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.examples.data.DataManager;
import com.scichart.examples.data.PriceSeries;
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment;

import java.util.Collections;
import java.util.Date;

public class CandlestickChartFragment extends ExampleSingleChartBaseFragment {

    @Override
    protected void initExample(@NonNull SciChartSurface surface) {
        PriceSeries priceSeries = DataManager.getInstance().getPriceDataIndu(getActivity());
        int size = priceSeries.size();

        final IAxis xAxis = sciChartBuilder.newCategoryDateAxis().withVisibleRange(size - 30, size).withGrowBy(0, 0.1).build();
        final IAxis yAxis = sciChartBuilder.newNumericAxis().withGrowBy(0d, 0.1d).withAutoRangeMode(AutoRange.Always).build();

        IOhlcDataSeries<Date, Double> dataSeries = new OhlcDataSeries<>(Date.class, Double.class);
        dataSeries.append(priceSeries.getDateData(), priceSeries.getOpenData(), priceSeries.getHighData(), priceSeries.getLowData(), priceSeries.getCloseData());

        final FastCandlestickRenderableSeries rSeries = sciChartBuilder.newCandlestickSeries()
                .withStrokeUp(0xFF00AA00)
                .withFillUpColor(0x8800AA00)
                .withStrokeDown(0xFFFF0000)
                .withFillDownColor(0x88FF0000)
                .withDataSeries(dataSeries)
                .build();

        UpdateSuspender.using(surface, () -> {
            Collections.addAll(surface.getXAxes(), xAxis);
            Collections.addAll(surface.getYAxes(), yAxis);
            Collections.addAll(surface.getRenderableSeries(), rSeries);
            Collections.addAll(surface.getChartModifiers(), sciChartBuilder.newModifierGroupWithDefaultModifiers().build());

            sciChartBuilder.newAnimator(rSeries).withWaveTransformation().withInterpolator(new DecelerateInterpolator()).withDuration(3000).withStartDelay(350).start();
        });
    }
}

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