Java Code Examples for com.github.mikephil.charting.data.LineData#notifyDataChanged()

/**
 * 动态增加一个点数据
 * @param timeDatamodel
 * @param length
 */
public void dynamicsAddOne(TimeDataModel timeDatamodel, int length) {
    int index = length - 1;
    LineData lineData = lineChart.getData();
    ILineDataSet d1 = lineData.getDataSetByIndex(0);
    d1.addEntry(new Entry(index, (float) timeDatamodel.getNowPrice()));
    ILineDataSet d2 = lineData.getDataSetByIndex(1);
    d2.addEntry(new Entry(index, (float) timeDatamodel.getAveragePrice()));

    BarData barData = barChart.getData();
    IBarDataSet barDataSet = barData.getDataSetByIndex(0);
    float color = timeDatamodel.getNowPrice() == d1.getEntryForIndex(index - 1).getY() ? 0f : timeDatamodel.getNowPrice() > d1.getEntryForIndex(index - 1).getY() ? 1f : -1f;
    barDataSet.addEntry(new BarEntry(index, timeDatamodel.getVolume(),color));
    lineData.notifyDataChanged();
    lineChart.notifyDataSetChanged();
    barData.notifyDataChanged();
    barChart.notifyDataSetChanged();
    lineChart.setVisibleXRange(maxCount, maxCount);
    barChart.setVisibleXRange(maxCount, maxCount);
    //动态添加或移除数据后， 调用invalidate()刷新图表之前 必须调用 notifyDataSetChanged() .
    lineChart.moveViewToX(index);
    barChart.moveViewToX(index);
}
 

/**
 * 动态增加一个点数据
 * @param timeDatamodel
 * @param length
 */
public void dynamicsAddOne(TimeDataModel timeDatamodel, int length) {
    int index = length - 1;
    LineData lineData = lineChart.getData();
    ILineDataSet d1 = lineData.getDataSetByIndex(0);
    d1.addEntry(new Entry( index, (float) timeDatamodel.getNowPrice()));
    ILineDataSet d2 = lineData.getDataSetByIndex(1);
    d2.addEntry(new Entry( index, (float) timeDatamodel.getAveragePrice()));

    BarData barData = barChart.getData();
    IBarDataSet barDataSet = barData.getDataSetByIndex(0);
    float color = timeDatamodel.getNowPrice() == d1.getEntryForIndex(index - 1).getY() ? 0f : timeDatamodel.getNowPrice() > d1.getEntryForIndex(index - 1).getY() ? 1f : -1f;
    barDataSet.addEntry(new BarEntry( index, timeDatamodel.getVolume(),color));
    lineData.notifyDataChanged();
    lineChart.notifyDataSetChanged();
    barData.notifyDataChanged();
    barChart.notifyDataSetChanged();
    lineChart.setVisibleXRange(maxCount, maxCount);
    barChart.setVisibleXRange(maxCount, maxCount);
    //动态添加或移除数据后， 调用invalidate()刷新图表之前 必须调用 notifyDataSetChanged() .
    lineChart.moveViewToX(index);
    barChart.moveViewToX(index);
}
 

private void removeLastEntry() {

        LineData data = chart.getData();

        if (data != null) {

            ILineDataSet set = data.getDataSetByIndex(0);

            if (set != null) {

                Entry e = set.getEntryForXValue(set.getEntryCount() - 1, Float.NaN);

                data.removeEntry(e, 0);
                // or remove by index
                // mData.removeEntryByXValue(xIndex, dataSetIndex);
                data.notifyDataChanged();
                chart.notifyDataSetChanged();
                chart.invalidate();
            }
        }
    }
 

private void update(@NonNull Peer peer) {
    LineData data = chart.getLineData();
    if (data != null) {
        int pos = data.getEntryCount() + 1;
        data.addEntry(new Entry(pos, peer.downloadSpeed), Utils.CHART_DOWNLOAD_SET);
        data.addEntry(new Entry(pos, peer.uploadSpeed), Utils.CHART_UPLOAD_SET);
        data.notifyDataChanged();
        chart.notifyDataSetChanged();
        chart.setVisibleXRangeMaximum(60);
        chart.moveViewToX(data.getEntryCount());
    }

    seeder.setHtml(R.string.seeder, String.valueOf(peer.seeder));
    peerChoking.setHtml(R.string.peerChoking, String.valueOf(peer.peerChoking));
    amChoking.setHtml(R.string.amChoking, String.valueOf(peer.amChoking));
    downloadSpeed.setText(CommonUtils.speedFormatter(peer.downloadSpeed, false));
    uploadSpeed.setText(CommonUtils.speedFormatter(peer.uploadSpeed, false));
    bitfield.update(peer.bitfield, numPieces);

    int knownPieces = BitfieldVisualizer.knownPieces(peer.bitfield, numPieces);
    health.setHtml(R.string.health, ((float) knownPieces / (float) numPieces) * 100f, knownPieces, numPieces);

    PeerIdParser.Parsed parsed = peer.peerId();
    if (parsed == null)
        peerId.setHtml(R.string.peerId, getString(R.string.unknown).toLowerCase());
    else
        peerId.setHtml(R.string.peerId, parsed.toString());
}
 

private void update(@NonNull Server server) {
    downloadSpeed.setText(CommonUtils.speedFormatter(server.downloadSpeed, false));
    LineData data = chart.getLineData();
    if (data != null) {
        int pos = data.getEntryCount() + 1;
        data.addEntry(new Entry(pos, server.downloadSpeed), Utils.CHART_DOWNLOAD_SET);
        data.notifyDataChanged();
        chart.notifyDataSetChanged();
        chart.setVisibleXRangeMaximum(60);
        chart.moveViewToX(data.getEntryCount());
    }

    currentUri.setHtml(R.string.currentUri, server.currentUri);
    uri.setHtml(R.string.uri, server.uri);
}
 

/**
 * 动态更新最后一点数据
 * @param timeDatamodel
 * @param length
 */
public void dynamicsUpdateOne(TimeDataModel timeDatamodel, int length) {
    int index = length - 1;
    LineData lineData = lineChart.getData();
    ILineDataSet d1 = lineData.getDataSetByIndex(0);
    Entry e = d1.getEntryForIndex(index);
    d1.removeEntry(e);
    d1.addEntry(new Entry(index, (float) timeDatamodel.getNowPrice()));

    ILineDataSet d2 = lineData.getDataSetByIndex(1);
    Entry e2 = d2.getEntryForIndex(index);
    d2.removeEntry(e2);
    d2.addEntry(new Entry(index, (float) timeDatamodel.getAveragePrice()));

    BarData barData = barChart.getData();
    IBarDataSet barDataSet = barData.getDataSetByIndex(0);
    barDataSet.removeEntry(index);
    float color = timeDatamodel.getNowPrice() == d1.getEntryForIndex(index - 1).getY() ? 0f : timeDatamodel.getNowPrice() > d1.getEntryForIndex(index - 1).getY() ? 1f : -1f;
    barDataSet.addEntry(new BarEntry(index, timeDatamodel.getVolume(),color));

    lineData.notifyDataChanged();
    lineChart.notifyDataSetChanged();
    lineChart.moveViewToX(index);

    barData.notifyDataChanged();
    barChart.notifyDataSetChanged();
    barChart.moveViewToX(index);
}
 

/**
 * 动态更新最后一点数据
 * @param timeDatamodel
 * @param length
 */
public void dynamicsUpdateOne(TimeDataModel timeDatamodel, int length) {
    int index = length - 1;
    LineData lineData = lineChart.getData();
    ILineDataSet d1 = lineData.getDataSetByIndex(0);
    Entry e = d1.getEntryForIndex(index);
    d1.removeEntry(e);
    d1.addEntry(new Entry( index, (float) timeDatamodel.getNowPrice()));

    ILineDataSet d2 = lineData.getDataSetByIndex(1);
    Entry e2 = d2.getEntryForIndex(index);
    d2.removeEntry(e2);
    d2.addEntry(new Entry( index, (float) timeDatamodel.getAveragePrice()));

    BarData barData = barChart.getData();
    IBarDataSet barDataSet = barData.getDataSetByIndex(0);
    barDataSet.removeEntry(index);
    float color = timeDatamodel.getNowPrice() == d1.getEntryForIndex(index - 1).getY() ? 0f : timeDatamodel.getNowPrice() > d1.getEntryForIndex(index - 1).getY() ? 1f : -1f;
    barDataSet.addEntry(new BarEntry( index, timeDatamodel.getVolume(),color));

    lineData.notifyDataChanged();
    lineChart.notifyDataSetChanged();
    lineChart.moveViewToX(index);

    barData.notifyDataChanged();
    barChart.notifyDataSetChanged();
    barChart.moveViewToX(index);
}
 

private void addDataSet() {

        LineData data = chart.getData();

        if (data == null) {
            chart.setData(new LineData());
        } else {
            int count = (data.getDataSetCount() + 1);
            int amount = data.getDataSetByIndex(0).getEntryCount();

            ArrayList<Entry> values = new ArrayList<>();

            for (int i = 0; i < amount; i++) {
                values.add(new Entry(i, (float) (Math.random() * 50f) + 50f * count));
            }

            LineDataSet set = new LineDataSet(values, "DataSet " + count);
            set.setLineWidth(2.5f);
            set.setCircleRadius(4.5f);

            int color = colors[count % colors.length];

            set.setColor(color);
            set.setCircleColor(color);
            set.setHighLightColor(color);
            set.setValueTextSize(10f);
            set.setValueTextColor(color);

            data.addDataSet(set);
            data.notifyDataChanged();
            chart.notifyDataSetChanged();
            chart.invalidate();
        }
    }
 

private void addEntry() {

        LineData data = chart.getData();

        if (data != null) {

            ILineDataSet set = data.getDataSetByIndex(0);
            // set.addEntry(...); // can be called as well

            if (set == null) {
                set = createSet();
                data.addDataSet(set);
            }

            data.addEntry(new Entry(set.getEntryCount(), (float) (Math.random() * 40) + 30f), 0);
            data.notifyDataChanged();

            // let the chart know it's data has changed
            chart.notifyDataSetChanged();

            // limit the number of visible entries
            chart.setVisibleXRangeMaximum(120);
            // chart.setVisibleYRange(30, AxisDependency.LEFT);

            // move to the latest entry
            chart.moveViewToX(data.getEntryCount());

            // this automatically refreshes the chart (calls invalidate())
            // chart.moveViewTo(data.getXValCount()-7, 55f,
            // AxisDependency.LEFT);
        }
    }
 

public void refreshData(float price) {
    if (price <= 0 || price == mLastPrice) {
        return;
    }
    mLastPrice = price;
    LineData data = mChart.getData();

    if (data != null) {
        ILineDataSet setSell = data.getDataSetByIndex(DATA_SET_PRICE);
        if (setSell == null) {
            setSell = createSet(TYPE_FULL);
            data.addDataSet(setSell);
        }

        data.removeEntry(setSell.getEntryCount(), DATA_SET_PRICE);
        Entry entry = new Entry(setSell.getEntryCount(), price);
        data.addEntry(entry, DATA_SET_PRICE);

        ILineDataSet paddingSet = data.getDataSetByIndex(DATA_SET_PADDING);
        if (paddingSet == null) {
            paddingSet = createSet(TYPE_DASHED);
            data.addDataSet(paddingSet);
        }

        int count = paddingSet.getEntryCount();
        paddingSet.clear();
        for (int i = 0; i < count; i++) {
            paddingSet.addEntry(new Entry(setSell.getEntryCount() + i, price));
        }

        Highlight chartHighlighter = new Highlight(setSell.getEntryCount() + paddingSet.getEntryCount(), price, DATA_SET_PADDING);
        mChart.highlightValue(chartHighlighter);

        data.notifyDataChanged();
        mChart.notifyDataSetChanged();
        mChart.invalidate();


    }
}
 

public void update(@NonNull DownloadWithUpdate download) {
    DownloadWithUpdate.SmallUpdate last = download.update();
    if (last.status == Download.Status.ACTIVE) {
        detailsChart.setVisibility(View.VISIBLE);

        LineData data = detailsChart.getData();
        if (data == null) {
            Utils.setupChart(detailsChart, true);
            data = detailsChart.getData();
        }

        if (data != null) {
            int pos = data.getEntryCount() / 2 + 1;
            data.addEntry(new Entry(pos, last.downloadSpeed), Utils.CHART_DOWNLOAD_SET);
            data.addEntry(new Entry(pos, last.uploadSpeed), Utils.CHART_UPLOAD_SET);
            data.notifyDataChanged();
            detailsChart.notifyDataSetChanged();

            detailsChart.setVisibleXRangeMaximum(90);
            detailsChart.moveViewToX(pos - 91);
        }
    } else {
        detailsChart.clear();
        detailsChart.setVisibility(View.GONE);
    }

    if (last.status == Download.Status.ERROR || last.status == Download.Status.REMOVED || last.status == Download.Status.COMPLETE)
        toggleNotification.setVisibility(View.GONE);
    else
        toggleNotification.setVisibility(View.VISIBLE);

    donutProgress.setProgress(last.getProgress());
    downloadName.setText(last.getName());
    if (last.status == Download.Status.ERROR) {
        if (last.errorMessage == null)
            downloadStatus.setText(String.format(Locale.getDefault(), "%s #%d", last.status.getFormal(context, true), last.errorCode));
        else
            downloadStatus.setText(String.format(Locale.getDefault(), "%s #%d: %s", last.status.getFormal(context, true), last.errorCode, last.errorMessage));
    } else {
        downloadStatus.setText(last.status.getFormal(context, true));
    }

    customInfo.update(last);

    detailsCompletedLength.setHtml(R.string.completed_length, CommonUtils.dimensionFormatter(last.completedLength, false));

    if (last.isTorrent()) {
        detailsUploadLength.setHtml(R.string.uploaded_length, CommonUtils.dimensionFormatter(last.uploadLength, false));
        detailsUploadLength.setVisibility(View.VISIBLE);
    } else {
        detailsUploadLength.setVisibility(View.GONE);
    }

    setupActions(download);

    CommonUtils.setRecyclerViewTopMargin(this);
}
 

private void setupChartView() {
    Resources resources = chart.getResources();
    int textColor = resources.getColor(R.color.silabs_black);
    int axisColor = resources.getColor(R.color.silabs_black);
    int graphColor = resources.getColor(R.color.silabs_red);

    chart.getDescription().setEnabled(false);
    chart.getLegend().setEnabled(false);
    chart.setScaleEnabled(false);
    chart.setHighlightPerTapEnabled(false);
    chart.setHighlightPerDragEnabled(false);
    chart.setDoubleTapToZoomEnabled(false);
    chart.getAxisRight().setEnabled(false);
    chart.getAxisLeft().setValueFormatter(new YAxisValueFormatter());
    chart.getAxisLeft().setTextSize(10f);
    chart.getAxisLeft().setTextColor(textColor);
    chart.getAxisLeft().setAxisMinimum(-100);
    chart.getAxisLeft().setAxisMaximum(25);
    chart.getAxisLeft().setGranularity(25);
    chart.getAxisLeft().setDrawGridLines(false);
    chart.getAxisLeft().setDrawAxisLine(true);
    chart.getAxisLeft().setAxisLineWidth(0.5f);
    chart.getAxisLeft().setAxisLineColor(axisColor);
    chart.setRendererLeftYAxis(new YAxisArrowRenderer(chart.getViewPortHandler(), chart.getAxisLeft(), chart.getRendererLeftYAxis().getTransformer()));
    chart.getXAxis().setDrawGridLines(false);
    chart.getXAxis().setDrawAxisLine(false);
    chart.getXAxis().setAxisMinimum(0);
    chart.getXAxis().setAxisMaximum(50);
    chart.getXAxis().setValueFormatter(new XAxisValueFormatter());
    chart.setMinOffset(0);
    chart.setExtraOffsets(-4f, 0, 4f, 4f);
    chart.getAxisLeft().addLimitLine(createLimitLine(0, axisColor));
    chart.getAxisLeft().addLimitLine(createDashLine(-100, axisColor));
    chart.getAxisLeft().addLimitLine(createDashLine(-75, axisColor));
    chart.getAxisLeft().addLimitLine(createDashLine(-50, axisColor));
    chart.getAxisLeft().addLimitLine(createDashLine(-25, axisColor));
    chart.getAxisLeft().addLimitLine(createDashLine(25, axisColor));

    LineData chartData = createChartData(graphColor);

    chart.setData(chartData);

    chartDataSet.notifyDataSetChanged();
    chartData.notifyDataChanged();
    chart.notifyDataSetChanged();

    chart.invalidate();
}
 

public void addEntry(HisData hisData) {
    hisData = DataUtils.calculateHisData(hisData, mList);
    LineData data = mChart.getData();

    if (data != null) {
        ILineDataSet setSell = data.getDataSetByIndex(DATA_SET_PRICE);
        if (setSell == null) {
            setSell = createSet(TYPE_FULL);
            data.addDataSet(setSell);
        }
        ILineDataSet aveSet = data.getDataSetByIndex(DATA_SET_AVE);
        if (aveSet == null) {
            aveSet = createSet(DATA_SET_AVE);
            data.addDataSet(aveSet);
        }

        int index = mList.indexOf(hisData);
        if (index >= 0) {
            mList.remove(hisData);
            data.removeEntry(index, DATA_SET_PRICE);
            data.removeEntry(index, DATA_SET_AVE);
        }
        mList.add(hisData);
        float price = (float) hisData.getClose();
        data.addEntry(new Entry(setSell.getEntryCount(), price), DATA_SET_PRICE);
        data.addEntry(new Entry(setSell.getEntryCount(), (float) hisData.getAvePrice()), DATA_SET_AVE);

        ILineDataSet paddingSet = data.getDataSetByIndex(DATA_SET_PADDING);
        if (paddingSet == null) {
            paddingSet = createSet(TYPE_DASHED);
            data.addDataSet(paddingSet);
        }

        int count = paddingSet.getEntryCount();

        if (count > PADDING_COUNT && index < 0) {
            count--;
        }
        paddingSet.clear();
        for (int i = 0; i < count; i++) {
            paddingSet.addEntry(new Entry(setSell.getEntryCount() + i, price));
        }

        Highlight chartHighlighter = new Highlight(setSell.getEntryCount() + paddingSet.getEntryCount(), price, DATA_SET_PADDING);
        mChart.highlightValue(chartHighlighter);

        data.notifyDataChanged();
        mChart.notifyDataSetChanged();
        mChart.invalidate();
    }
}