Java LineDataSet.setValueFormatter方法代码示例

import com.github.mikephil.charting.data.LineDataSet; //导入方法依赖的package包/类
/**
 * Adds the main data set for all times and the data set for the progression of record best
 * times among all times. The progression of best times are marked in a different color to the
 * main line of all time using circles lined with a dashed line. This will appear to connect
 * the lowest troughs along the main line of all times.
 *
 * @param chartData The chart data to which to add the new data sets.
 * @param allLabel  The label of the all-times line.
 * @param allColor  The color of the all-times line.
 * @param bestLabel The label of the best-times line.
 * @param bestColor The color of the best-times line.
 */
private void addMainDataSets(LineData chartData, String allLabel, int allColor,
                             String bestLabel, int bestColor) {
    // Main data set for all solve times.
    chartData.addDataSet(createDataSet(allLabel, allColor));

    // Data set to show the progression of best times along the main line of all times.
    final LineDataSet bestDataSet = createDataSet(bestLabel, bestColor);

    bestDataSet.enableDashedLine(3f, 6f, 0f);

    bestDataSet.setDrawCircles(true);
    bestDataSet.setCircleRadius(BEST_TIME_CIRCLE_RADIUS_DP);
    bestDataSet.setCircleColor(bestColor);

    bestDataSet.setDrawValues(false);
    bestDataSet.setValueTextColor(bestColor);
    bestDataSet.setValueTextSize(BEST_TIME_VALUES_TEXT_SIZE_DP);
    bestDataSet.setValueFormatter(new TimeChartValueFormatter());

    chartData.addDataSet(bestDataSet);
}
 

import com.github.mikephil.charting.data.LineDataSet; //导入方法依赖的package包/类
private LineData getLineData(List<String> xVals, List<Entry> lineEntries) {
    final LineDataSet dataSet = new LineDataSet(lineEntries, getContext().getString(R.string.moving_average));

    final int color = ContextCompat.getColor(getContext(), R.color.brown);

    dataSet.setColor(color);
    dataSet.setLineWidth(2.5f);
    dataSet.setCircleColor(color);
    dataSet.setFillColor(color);
    dataSet.setDrawValues(true);
    dataSet.setValueTextSize(12);
    dataSet.setValueTextColor(color);

    // Format the value labels to two decimal places
    dataSet.setValueFormatter(new LineChartValueFormatter());

    return new LineData(xVals, dataSet);
}
 

import com.github.mikephil.charting.data.LineDataSet; //导入方法依赖的package包/类
private void setData() {
    List<Entry> entries = data.getList();

    for(Entry e: entries){
        Date d= new Date((long) e.getX());
        Log.d(Const.TAG2, "Next Entry is "+d.toString()+" , "+e.getY());
    }

    LineDataSet dataSet = new LineDataSet(entries, "Hourly Weather report");
    dataSet.setColor(Color.rgb(184, 235, 161));
    dataSet.setDrawCircleHole(false);
    dataSet.setCircleColor(Color.CYAN);
    dataSet.setValueTextColor(Color.WHITE);
    dataSet.setValueTextSize(15);
    dataSet.setDrawFilled(true);
    dataSet.setFillColor(Color.LTGRAY);
    dataSet.setDrawValues(true);
    dataSet.setMode(LineDataSet.Mode.CUBIC_BEZIER);
    dataSet.setValueFormatter(new IValueFormatter() {
        @Override
        public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
            int newValue = (int) value;
            return newValue + Const.DEGREE;
        }
    });

    LineData lineData = new LineData(dataSet);

    lineChart.setData(lineData);
    lineChart.invalidate();//refresh
}
 

import com.github.mikephil.charting.data.LineDataSet; //导入方法依赖的package包/类
public void updateGraph(){

        List<Entry> entries = new ArrayList<>();
        Last7Days newDays = AxisFormatter.reverseLast7Days(last7Days);
        int i = 0;
        for(long dataEntry : get7Days(newDays)){
            entries.add(new Entry((float)i,(float)dataEntry));
            i++;
        }
        LineDataSet dataSet = new LineDataSet(entries,context.getString(R.string.main_scores));
        dataSet.setColor(ContextCompat.getColor(context,R.color.greenDark));
        dataSet.setValueTextSize(14f);
        dataSet.setValueFormatter(new IValueFormatter() {
            @Override
            public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
                return String.valueOf((int) value);
            }
        });
        dataSet.setCircleColor(ContextCompat.getColor(context,R.color.greenPrimary));
        dataSet.setLineWidth(3f);
        dataSet.setCircleRadius(10f);
        dataSet.setDrawValues(false);
        dataSet.setHighlightEnabled(true);
        LineData lineData = new LineData(dataSet);
        graph.setData(lineData);
        Description description = new Description();
        description.setEnabled(false);
        description.setText("");
        graph.setDescription(description);
        graph.setNoDataText(context.getString(R.string.main_connecting));
        graph.setNoDataTextColor(ContextCompat.getColor(context,R.color.greenDark));
        graph.setDrawGridBackground(false);
        graph.setDrawBorders(false);
        YAxis leftAxis = graph.getAxisLeft();
        leftAxis.setEnabled(false);
        leftAxis.setAxisMinimum(0);
        YAxis rightAxis = graph.getAxisRight();
        rightAxis.setEnabled(false);
        XAxis xAxis = graph.getXAxis();
        Calendar c = Calendar.getInstance();
        c.setTimeInMillis(System.currentTimeMillis());
        ArrayList<Date> dateArrayList = new ArrayList<>();
        for(int count = 0;count<7;count++){
            Date date = c.getTime();
            dateArrayList.add(date);
            c.setTimeInMillis(c.getTimeInMillis() - ((long) 1000 * 60 * 60 * 24 ));
        }
        Collections.reverse(dateArrayList);
        xAxis.setValueFormatter(new AxisFormatter(context,dateArrayList,dateFormatPattern));
        xAxis.setTextSize(10f);
        graph.setTouchEnabled(false);
        graph.setDragEnabled(false);
        graph.setScaleEnabled(false);
        graph.setScaleXEnabled(false);
        graph.setScaleYEnabled(false);
        graph.setPinchZoom(false);
        graph.setDoubleTapToZoomEnabled(false);
        Legend legend = graph.getLegend();
        legend.setEnabled(false);
        graph.invalidate();

    }