com.github.mikephil.charting.data.CandleData#getDataSetByIndex

Source File: KLineChart.java From StockChart-MPAndroidChart with MIT License

6 votes

/**
 * 动态更新最后一点数据 最新数据集
 *
 * @param kLineData
 */
public void dynamicsUpdateOne(KLineDataManage kLineData) {
    int size = kLineData.getKLineDatas().size();
    int i = size - 1;
    CombinedData candleChartData = candleChart.getData();
    CandleData candleData = candleChartData.getCandleData();
    ICandleDataSet candleDataSet = candleData.getDataSetByIndex(0);
    candleDataSet.removeEntry(i);

    candleDataSet.addEntry(new CandleEntry(i + kLineData.getOffSet(), (float) kLineData.getKLineDatas().get(i).getHigh(), (float) kLineData.getKLineDatas().get(i).getLow(), (float) kLineData.getKLineDatas().get(i).getOpen(), (float) kLineData.getKLineDatas().get(i).getClose()));
    if (chartType1 == 1) {//副图是成交量
        CombinedData barChartData = barChart.getData();
        IBarDataSet barDataSet = barChartData.getBarData().getDataSetByIndex(0);
        barDataSet.removeEntry(i);
        float color = kLineData.getKLineDatas().get(i).getOpen() == kLineData.getKLineDatas().get(i).getClose()?0f:kLineData.getKLineDatas().get(i).getOpen() > kLineData.getKLineDatas().get(i).getClose() ? -1f : 1f;
        BarEntry barEntry = new BarEntry(i + kLineData.getOffSet(), (float) kLineData.getKLineDatas().get(i).getVolume(), color);
        barDataSet.addEntry(barEntry);
    } else {//副图是其他技术指标
        doBarChartSwitch(chartType1);
    }

    candleChart.notifyDataSetChanged();
    barChart.notifyDataSetChanged();
    candleChart.invalidate();
    barChart.invalidate();
}

Source File: MyCandleStickChartRenderer.java From shinny-futures-android with GNU General Public License v3.0

5 votes

@Override
public void drawHighlighted(Canvas c, Highlight[] indices) {

    CandleData candleData = mChart.getCandleData();

    for (Highlight high : indices) {

        ICandleDataSet set = candleData.getDataSetByIndex(high.getDataSetIndex());

        if (set == null || !set.isHighlightEnabled())
            continue;

        CandleEntry e = set.getEntryForXValue(high.getX(), high.getY());

        if (!isInBoundsX(e, set))
            continue;


        float lowValue = e.getLow() * mAnimator.getPhaseY();
        float highValue = e.getHigh() * mAnimator.getPhaseY();
        MPPointD pix = mChart.getTransformer(set.getAxisDependency())
                .getPixelForValues(e.getX(), (lowValue + highValue) / 2f);
        float xp = (float) pix.x;

        mHighlightPaint.setColor(set.getHighLightColor());
        mHighlightPaint.setStrokeWidth(set.getHighlightLineWidth());

        float xMax = mViewPortHandler.contentRight();
        float contentBottom = mViewPortHandler.contentBottom();
        //绘制竖线
        c.drawLine(xp, 1, xp, mChart.getHeight(), mHighlightPaint);

        //判断是否画横线
        float y = high.getDrawY();
        if (y >= 0 && y <= contentBottom) {//在区域内即绘制横线
            //绘制横线
            c.drawLine(0, y, xMax, y, mHighlightPaint);
        }
    }
}

Source File: KLineChart.java From StockChart-MPAndroidChart with MIT License

5 votes

/**
 * 动态增加一个点数据
 *
 * @param kLineData 最新数据集
 */
public void dynamicsAddOne(KLineDataManage kLineData) {
    int size = kLineData.getKLineDatas().size();
    CombinedData candleChartData = candleChart.getData();
    CandleData candleData = candleChartData.getCandleData();
    ICandleDataSet candleDataSet = candleData.getDataSetByIndex(0);
    int i = size - 1;
    candleDataSet.addEntry(new CandleEntry(i + kLineData.getOffSet(), (float) kLineData.getKLineDatas().get(i).getHigh(), (float) kLineData.getKLineDatas().get(i).getLow(), (float) kLineData.getKLineDatas().get(i).getOpen(), (float) kLineData.getKLineDatas().get(i).getClose()));
    kLineData.getxVals().add(DataTimeUtil.secToDate(kLineData.getKLineDatas().get(i).getDateMills()));
    candleChart.getXAxis().setAxisMaximum(kLineData.getKLineDatas().size() < 70 ? 70 : candleChartData.getXMax() + kLineData.getOffSet());

    if (chartType1 == 1) {//副图是成交量
        CombinedData barChartData = barChart.getData();
        IBarDataSet barDataSet = barChartData.getBarData().getDataSetByIndex(0);
        if (barDataSet == null) {//当没有数据时
            return;
        }
        float color = kLineData.getKLineDatas().get(i).getOpen() == kLineData.getKLineDatas().get(i).getClose()?0f:kLineData.getKLineDatas().get(i).getOpen() > kLineData.getKLineDatas().get(i).getClose() ? -1f : 1f;
        BarEntry barEntry = new BarEntry(i + kLineData.getOffSet(), (float) kLineData.getKLineDatas().get(i).getVolume(), color);

        barDataSet.addEntry(barEntry);
        barChart.getXAxis().setAxisMaximum(kLineData.getKLineDatas().size() < 70 ? 70 : barChartData.getXMax() + kLineData.getOffSet());
    } else {//副图是其他技术指标
        doBarChartSwitch(chartType1);
    }

    candleChart.notifyDataSetChanged();
    barChart.notifyDataSetChanged();
    if (kLineData.getKLineDatas().size() > 70) {
        //moveViewTo(...) 方法会自动调用 invalidate()
        candleChart.moveViewToX(kLineData.getKLineDatas().size() - 1);
        barChart.moveViewToX(kLineData.getKLineDatas().size() - 1);
    } else {
        candleChart.invalidate();
        barChart.invalidate();
    }
}

Source File: CandleStickChartRenderer.java From iMoney with Apache License 2.0

5 votes

@Override
public void initBuffers() {
    CandleData candleData = mChart.getCandleData();
    mShadowBuffers = new CandleShadowBuffer[candleData.getDataSetCount()];
    mBodyBuffers = new CandleBodyBuffer[candleData.getDataSetCount()];

    for (int i = 0; i < mShadowBuffers.length; i++) {
        CandleDataSet set = candleData.getDataSetByIndex(i);
        mShadowBuffers[i] = new CandleShadowBuffer(set.getValueCount() * 4);
        mBodyBuffers[i] = new CandleBodyBuffer(set.getValueCount() * 4);
    }
}

Source File: KLineView.java From android-kline with Apache License 2.0

4 votes

public void addData(HisData hisData) {
    hisData = DataUtils.calculateHisData(hisData, mData);
    CombinedData combinedData = mChartPrice.getData();
    LineData priceData = combinedData.getLineData();
    ILineDataSet ma5Set = priceData.getDataSetByIndex(1);
    ILineDataSet ma10Set = priceData.getDataSetByIndex(2);
    ILineDataSet ma20Set = priceData.getDataSetByIndex(3);
    ILineDataSet ma30Set = priceData.getDataSetByIndex(4);
    CandleData kData = combinedData.getCandleData();
    ICandleDataSet klineSet = kData.getDataSetByIndex(0);
    IBarDataSet volSet = mChartVolume.getData().getBarData().getDataSetByIndex(0);
    IBarDataSet macdSet = mChartMacd.getData().getBarData().getDataSetByIndex(0);
    ILineDataSet difSet = mChartMacd.getData().getLineData().getDataSetByIndex(0);
    ILineDataSet deaSet = mChartMacd.getData().getLineData().getDataSetByIndex(1);
    LineData kdjData = mChartKdj.getData().getLineData();
    ILineDataSet kSet = kdjData.getDataSetByIndex(0);
    ILineDataSet dSet = kdjData.getDataSetByIndex(1);
    ILineDataSet jSet = kdjData.getDataSetByIndex(2);

    if (mData.contains(hisData)) {
        int index = mData.indexOf(hisData);
        klineSet.removeEntry(index);
        // ma比较特殊，entry数量和k线的不一致，移除最后一个
        ma5Set.removeLast();
        ma10Set.removeLast();
        ma20Set.removeLast();
        ma30Set.removeLast();
        volSet.removeEntry(index);
        macdSet.removeEntry(index);
        difSet.removeEntry(index);
        deaSet.removeEntry(index);
        kSet.removeEntry(index);
        dSet.removeEntry(index);
        jSet.removeEntry(index);
        mData.remove(index);
    }
    mData.add(hisData);
    int klineCount = klineSet.getEntryCount();
    klineSet.addEntry(new CandleEntry(klineCount, (float) hisData.getHigh(), (float) hisData.getLow(), (float) hisData.getOpen(), (float) hisData.getClose()));
    volSet.addEntry(new BarEntry(volSet.getEntryCount(), hisData.getVol(), hisData));

    macdSet.addEntry(new BarEntry(macdSet.getEntryCount(), (float) hisData.getMacd()));
    difSet.addEntry(new Entry(difSet.getEntryCount(), (float) hisData.getDif()));
    deaSet.addEntry(new Entry(deaSet.getEntryCount(), (float) hisData.getDea()));

    kSet.addEntry(new Entry(kSet.getEntryCount(), (float) hisData.getK()));
    dSet.addEntry(new Entry(dSet.getEntryCount(), (float) hisData.getD()));
    jSet.addEntry(new Entry(jSet.getEntryCount(), (float) hisData.getJ()));

    // 因为ma的数量会少，所以这里用kline的set数量作为x
    if (!Double.isNaN(hisData.getMa5())) {
        ma5Set.addEntry(new Entry(klineCount, (float) hisData.getMa5()));
    }
    if (!Double.isNaN(hisData.getMa10())) {
        ma10Set.addEntry(new Entry(klineCount, (float) hisData.getMa10()));
    }
    if (!Double.isNaN(hisData.getMa20())) {
        ma20Set.addEntry(new Entry(klineCount, (float) hisData.getMa20()));
    }
    if (!Double.isNaN(hisData.getMa30())) {
        ma30Set.addEntry(new Entry(klineCount, (float) hisData.getMa30()));
    }


    mChartPrice.getXAxis().setAxisMaximum(combinedData.getXMax() + 1.5f);
    mChartVolume.getXAxis().setAxisMaximum(mChartVolume.getData().getXMax() + 1.5f);
    mChartMacd.getXAxis().setAxisMaximum(mChartMacd.getData().getXMax() + 1.5f);
    mChartKdj.getXAxis().setAxisMaximum(mChartKdj.getData().getXMax() + 1.5f);


    mChartPrice.setVisibleXRange(MAX_COUNT, MIN_COUNT);
    mChartVolume.setVisibleXRange(MAX_COUNT, MIN_COUNT);
    mChartMacd.setVisibleXRange(MAX_COUNT, MIN_COUNT);
    mChartKdj.setVisibleXRange(MAX_COUNT, MIN_COUNT);

    mChartPrice.notifyDataSetChanged();
    mChartPrice.invalidate();
    mChartVolume.notifyDataSetChanged();
    mChartVolume.invalidate();
    mChartMacd.notifyDataSetChanged();
    mChartMacd.invalidate();
    mChartKdj.notifyDataSetChanged();
    mChartKdj.invalidate();


    setDescription(mChartPrice, String.format(Locale.getDefault(), "MA5:%.2f  MA10:%.2f  MA20:%.2f  MA30:%.2f",
            hisData.getMa5(), hisData.getMa10(), hisData.getMa20(), hisData.getMa30()));
    setDescription(mChartVolume, "成交量 " + hisData.getVol());
    setDescription(mChartMacd, String.format(Locale.getDefault(), "MACD:%.2f  DEA:%.2f  DIF:%.2f",
            hisData.getMacd(), hisData.getDea(), hisData.getDif()));
    setDescription(mChartKdj, String.format(Locale.getDefault(), "K:%.2f  D:%.2f  J:%.2f",
            hisData.getK(), hisData.getD(), hisData.getJ()));

}

Source File: CandleStickChartRenderer.java From StockChart-MPAndroidChart with MIT License

3 votes

@Override
public void drawHighlighted(Canvas c, Highlight[] indices) {

    CandleData candleData = mChart.getCandleData();

    for (Highlight high : indices) {

        ICandleDataSet set = candleData.getDataSetByIndex(high.getDataSetIndex());

        if (set == null || !set.isHighlightEnabled()) {
            continue;
        }

        CandleEntry e = set.getEntryForXValue(high.getX(), high.getY());

        if (!isInBoundsX(e, set)) {
            continue;
        }

        float lowValue = e.getLow() * mAnimator.getPhaseY();
        float highValue = e.getHigh() * mAnimator.getPhaseY();
        float y = (lowValue + highValue) / 2f;

        MPPointD pix = mChart.getTransformer(set.getAxisDependency()).getPixelForValues(e.getX(), y);

        high.setDraw((float) pix.x, (float) pix.y);

        // draw the lines
        drawHighlightLines(c, (float) pix.x, (float) pix.y, set);
    }
}

Source File: CandleStickChartRenderer.java From Ticket-Analysis with MIT License

3 votes

@Override
public void drawHighlighted(Canvas c, Highlight[] indices) {

    CandleData candleData = mChart.getCandleData();

    for (Highlight high : indices) {

        ICandleDataSet set = candleData.getDataSetByIndex(high.getDataSetIndex());

        if (set == null || !set.isHighlightEnabled())
            continue;

        CandleEntry e = set.getEntryForXValue(high.getX(), high.getY());

        if (!isInBoundsX(e, set))
            continue;

        float lowValue = e.getLow() * mAnimator.getPhaseY();
        float highValue = e.getHigh() * mAnimator.getPhaseY();
        float y = (lowValue + highValue) / 2f;

        MPPointD pix = mChart.getTransformer(set.getAxisDependency()).getPixelForValues(e.getX(), y);

        high.setDraw((float) pix.x, (float) pix.y);

        // draw the lines
        drawHighlightLines(c, (float) pix.x, (float) pix.y, set);
    }
}

Source File: CandleStickChartRenderer.java From android-kline with Apache License 2.0

3 votes

@Override
public void drawHighlighted(Canvas c, Highlight[] indices) {

    CandleData candleData = mChart.getCandleData();

    for (Highlight high : indices) {

        ICandleDataSet set = candleData.getDataSetByIndex(high.getDataSetIndex());

        if (set == null || !set.isHighlightEnabled())
            continue;

        CandleEntry e = set.getEntryForXValue(high.getX(), high.getY());

        if (!isInBoundsX(e, set))
            continue;

        float lowValue = e.getLow() * mAnimator.getPhaseY();
        float highValue = e.getHigh() * mAnimator.getPhaseY();
        float y = (lowValue + highValue) / 2f;

        MPPointD pix = mChart.getTransformer(set.getAxisDependency()).getPixelForValues(e.getX(), y);

        high.setDraw((float) pix.x, (float) pix.y);

        // draw the lines
        drawHighlightLines(c, (float) pix.x, (float) pix.y, set);
    }
}

Source File: CandleStickChartRenderer.java From android-kline with Apache License 2.0

3 votes

@Override
public void drawHighlighted(Canvas c, Highlight[] indices) {

    CandleData candleData = mChart.getCandleData();

    for (Highlight high : indices) {

        ICandleDataSet set = candleData.getDataSetByIndex(high.getDataSetIndex());

        if (set == null || !set.isHighlightEnabled())
            continue;

        CandleEntry e = set.getEntryForXValue(high.getX(), high.getY());

        if (!isInBoundsX(e, set))
            continue;

        float lowValue = e.getLow() * mAnimator.getPhaseY();
        float highValue = e.getHigh() * mAnimator.getPhaseY();
        float y = (lowValue + highValue) / 2f;

        MPPointD pix = mChart.getTransformer(set.getAxisDependency()).getPixelForValues(e.getX(), y);

        high.setDraw((float) pix.x, (float) pix.y);

        // draw the lines
        drawHighlightLines(c, (float) pix.x, (float) pix.y, set);
    }
}

Java Code Examples for com.github.mikephil.charting.data.CandleData#getDataSetByIndex()