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

private void setData(int count, float range) {

        // now in hours
        long now = TimeUnit.MILLISECONDS.toHours(System.currentTimeMillis());

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

        // count = hours
        float to = now + count;

        // increment by 1 hour
        for (float x = now; x < to; x++) {

            float y = getRandom(range, 50);
            values.add(new Entry(x, y)); // add one entry per hour
        }

        // create a dataset and give it a type
        LineDataSet set1 = new LineDataSet(values, "DataSet 1");
        set1.setAxisDependency(AxisDependency.LEFT);
        set1.setColor(ColorTemplate.getHoloBlue());
        set1.setValueTextColor(ColorTemplate.getHoloBlue());
        set1.setLineWidth(1.5f);
        set1.setDrawCircles(false);
        set1.setDrawValues(false);
        set1.setFillAlpha(65);
        set1.setFillColor(ColorTemplate.getHoloBlue());
        set1.setHighLightColor(Color.rgb(244, 117, 117));
        set1.setDrawCircleHole(false);

        // create a data object with the data sets
        LineData data = new LineData(set1);
        data.setValueTextColor(Color.WHITE);
        data.setValueTextSize(9f);

        // set data
        chart.setData(data);
    }
 

public static void setupChart(@NonNull LineChart chart, boolean small, @ColorRes @Nullable Integer fgColorRes) {
    chart.clear();

    int fgColor;
    Context context = chart.getContext();
    if (fgColorRes == null)
        fgColor = CommonUtils.resolveAttrAsColor(context, R.attr.colorOnSurface);
    else
        fgColor = ContextCompat.getColor(context, fgColorRes);

    chart.setDescription(null);
    chart.setDrawGridBackground(false);
    chart.setBackgroundColor(Color.alpha(0));
    chart.setTouchEnabled(false);

    Legend legend = chart.getLegend();
    legend.setTextColor(fgColor);
    legend.setEnabled(true);

    LineData data = new LineData();
    data.setValueTextColor(fgColor);
    chart.setData(data);

    YAxis ya = chart.getAxisLeft();
    ya.setAxisLineColor(fgColor);
    ya.setTextColor(fgColor);
    ya.setTextSize(small ? 8 : 9);
    ya.setAxisMinimum(0);
    ya.setDrawAxisLine(false);
    ya.setLabelCount(small ? 4 : 8, true);
    ya.setEnabled(true);
    ya.setDrawGridLines(true);
    ya.setGridColor(fgColor);
    ya.setValueFormatter(new CustomYAxisValueFormatter());

    chart.getAxisRight().setEnabled(false);
    chart.getXAxis().setEnabled(false);

    data.addDataSet(initUploadSet(context));
    data.addDataSet(initDownloadSet(context));

    chart.invalidate();
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_realtime_linechart);

    setTitle("RealtimeLineChartActivity");

    chart = findViewById(R.id.chart1);
    chart.setOnChartValueSelectedListener(this);

    // enable description text
    chart.getDescription().setEnabled(true);

    // enable touch gestures
    chart.setTouchEnabled(true);

    // enable scaling and dragging
    chart.setDragEnabled(true);
    chart.setScaleEnabled(true);
    chart.setDrawGridBackground(false);

    // if disabled, scaling can be done on x- and y-axis separately
    chart.setPinchZoom(true);

    // set an alternative background color
    chart.setBackgroundColor(Color.LTGRAY);

    LineData data = new LineData();
    data.setValueTextColor(Color.WHITE);

    // add empty data
    chart.setData(data);

    // get the legend (only possible after setting data)
    Legend l = chart.getLegend();

    // modify the legend ...
    l.setForm(LegendForm.LINE);
    l.setTypeface(tfLight);
    l.setTextColor(Color.WHITE);

    XAxis xl = chart.getXAxis();
    xl.setTypeface(tfLight);
    xl.setTextColor(Color.WHITE);
    xl.setDrawGridLines(false);
    xl.setAvoidFirstLastClipping(true);
    xl.setEnabled(true);

    YAxis leftAxis = chart.getAxisLeft();
    leftAxis.setTypeface(tfLight);
    leftAxis.setTextColor(Color.WHITE);
    leftAxis.setAxisMaximum(100f);
    leftAxis.setAxisMinimum(0f);
    leftAxis.setDrawGridLines(true);

    YAxis rightAxis = chart.getAxisRight();
    rightAxis.setEnabled(false);

}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_realtime_linechart);

    mChart = (LineChart) findViewById(R.id.chart1);
    mChart.setOnChartValueSelectedListener(this);

    // no description text
    mChart.setDescription("");
    mChart.setNoDataTextDescription("You need to provide data for the chart.");

    // enable touch gestures
    mChart.setTouchEnabled(true);

    // enable scaling and dragging
    mChart.setDragEnabled(true);
    mChart.setScaleEnabled(true);
    mChart.setDrawGridBackground(false);

    // if disabled, scaling can be done on x- and y-axis separately
    mChart.setPinchZoom(true);

    // set an alternative background color
    mChart.setBackgroundColor(Color.LTGRAY);

    LineData data = new LineData();
    data.setValueTextColor(Color.WHITE);

    // add empty data
    mChart.setData(data);

    Typeface tf = Typeface.createFromAsset(getAssets(), "OpenSans-Regular.ttf");

    // get the legend (only possible after setting data)
    Legend l = mChart.getLegend();

    // modify the legend ...
    // l.setPosition(LegendPosition.LEFT_OF_CHART);
    l.setForm(LegendForm.LINE);
    l.setTypeface(tf);
    l.setTextColor(Color.WHITE);

    XAxis xl = mChart.getXAxis();
    xl.setTypeface(tf);
    xl.setTextColor(Color.WHITE);
    xl.setDrawGridLines(false);
    xl.setAvoidFirstLastClipping(true);
    xl.setSpaceBetweenLabels(5);
    xl.setEnabled(true);

    YAxis leftAxis = mChart.getAxisLeft();
    leftAxis.setTypeface(tf);
    leftAxis.setTextColor(Color.WHITE);
    leftAxis.setAxisMaxValue(100f);
    leftAxis.setAxisMinValue(0f);
    leftAxis.setDrawGridLines(true);

    YAxis rightAxis = mChart.getAxisRight();
    rightAxis.setEnabled(false);

}