Generates  an Android Bubble Chart in code. The FastBubbleRenderableSeries requires an instance of XyzDataSeries which contains X and Y points with position of the bubble and Z value which represents its radius.

Bubble charts are widely used in applications for investments, sales, marketing and many more.

Tip!

Bubbles are drawing using the pen set by the setStrokeStyle(PenStyle) method and the brush set by setBubbleBrushStyle(BrushStyle) method. Also you can adjust scale factor for bubbles by using setZScaleFactor.

// BubbleChartFragment.java

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//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// BubbleChartFragment.java is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use.
//
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied.
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package com.scichart.examples.fragments;

import android.app.Dialog;
import android.graphics.Color;
import android.view.View;
import android.widget.SeekBar;

import com.scichart.charting.model.dataSeries.IXyzDataSeries;
import com.scichart.charting.modifiers.RubberBandXyZoomModifier;
import com.scichart.charting.modifiers.ZoomExtentsModifier;
import com.scichart.charting.visuals.SciChartSurface;
import com.scichart.charting.visuals.axes.IAxis;
import com.scichart.charting.visuals.renderableSeries.FastBubbleRenderableSeries;
import com.scichart.charting.visuals.renderableSeries.FastLineRenderableSeries;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.data.model.DoubleRange;
import com.scichart.drawing.common.SolidBrushStyle;
import com.scichart.examples.R;
import com.scichart.examples.data.DataManager;
import com.scichart.examples.data.TradeData;
import com.scichart.examples.fragments.base.ExampleBaseFragment;
import com.scichart.examples.utils.SeekBarChangeListenerBase;
import com.scichart.examples.utils.ViewSettingsUtil;
import com.scichart.examples.utils.widgetgeneration.ImageViewWidget;
import com.scichart.examples.utils.widgetgeneration.Widget;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.List;

import butterknife.Bind;

public class BubbleChartFragment extends ExampleBaseFragment {

    @Bind(R.id.chart)
    SciChartSurface surface;

    private final int minSeekBarValue = 5;
    private int zScaleFactor = 30;

    @Override
    public List<Widget> getToolbarItems() {
        return new ArrayList<Widget>() {
            {
                add(new ImageViewWidget.Builder().setId(R.drawable.example_toolbar_settings).setListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        openSettingsDialog();
                    }
                }).build());
            }
        };
    }

    @Override
    protected int getLayoutId() {
        return R.layout.example_single_chart_fragment;
    }

    @Override
    protected void initExample() {
        final IAxis xAxis = sciChartBuilder.newDateAxis().withGrowBy(0d, 0.1d).build();
        final IAxis yAxis = sciChartBuilder.newNumericAxis().withGrowBy(0d, 0.1d).build();

        final IXyzDataSeries<Date, Double, Double> dataSeries = sciChartBuilder.newXyzDataSeries(Date.class, Double.class, Double.class).build();

        List<TradeData> tradeTicks = DataManager.getInstance().getTradeTicks(getActivity());
        for (int i = 0; i < tradeTicks.size(); i++) {
            TradeData tradeData = tradeTicks.get(i);
            dataSeries.append(tradeData.getTradeDate(), tradeData.getTradePrice(), tradeData.getTradeSize());
        }

        final FastLineRenderableSeries lineSeries = sciChartBuilder.newLineSeries().withDataSeries(dataSeries).withStrokeStyle(0xffff3333, 2f).build();

        final FastBubbleRenderableSeries bubbleSeries = sciChartBuilder.newBubbleSeries()
                .withDataSeries(dataSeries)
                .withZScaleFactor(zScaleFactor / 10f)
                .withBubbleBrushStyle(new SolidBrushStyle(0x77CCCCCC))
                .withStrokeStyle(0xFFCCCCCC, 2f, true)
                .withAutoZRange(false)
                .build();

        UpdateSuspender.using(surface, new Runnable() {
            @Override
            public void run() {
                Collections.addAll(surface.getXAxes(), xAxis);
                Collections.addAll(surface.getYAxes(), yAxis);
                Collections.addAll(surface.getRenderableSeries(), lineSeries, bubbleSeries);
                Collections.addAll(surface.getChartModifiers(), new RubberBandXyZoomModifier());
                Collections.addAll(surface.getChartModifiers(), new ZoomExtentsModifier());
            }
        });
    }

    private void openSettingsDialog() {
        final Dialog dialog = ViewSettingsUtil.createSettingsPopup(getActivity(), R.layout.example_bubble_chart_popop_layout);

        ViewSettingsUtil.setUpSeekBar(dialog, R.id.z_scale_seek_bar, zScaleFactor, new SeekBarChangeListenerBase() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                zScaleFactor = progress + minSeekBarValue;
                onZScaleFactorChanged();
            }
        });

        dialog.show();
    }

    private void onZScaleFactorChanged() {
        UpdateSuspender.using(surface, new Runnable() {
            @Override
            public void run() {
                FastBubbleRenderableSeries rSeries = (FastBubbleRenderableSeries) surface.getRenderableSeries().get(1);
                rSeries.setZScaleFactor(zScaleFactor / 10f);
            }
        });
    }
}

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