MPAndroidChart adding data

Question

A problem occured while building a chart. Studio doesn't accept data in this form. Actually problem is only with month's names. Without them code works fine. MPAndroidChart version 3. In official examples i understood nothing). Studio says:Error:(46, 24) error: constructor BarData in class BarData cannot be applied to given types; required: IBarDataSet[] found: ArrayList,BarDataSet reason: varargs mismatch; ArrayList cannot be converted to IBarDataSet. Please tell me how to add strings with months. Thank you.

    barChart= (BarChart) findViewById(R.id.bargraph);

    List<BarEntry> calls = new ArrayList<>();
    calls.add(new BarEntry(0, 9f));
    calls.add(new BarEntry(1, 3f));
    calls.add(new BarEntry(2, 5f));
    calls.add(new BarEntry(3, 2f));
    calls.add(new BarEntry(4, 6f));
    calls.add(new BarEntry(5, 12f));

    BarDataSet barDataSet = new BarDataSet(calls,"num");


    ArrayList<String> months = new ArrayList<>();
    months.add("Jan");
    months.add("Feb");
    months.add("Mar");
    months.add("Apr");
    months.add("May");
    months.add("June");


    BarData data;
    data = new BarData(months,barDataSet);


    data.setBarWidth(0.9f);
    barChart.setData(data);
    barChart.setFitBars(true);
    barChart.invalidate();

Muhammad Saad Rafique · Accepted Answer · 2018-03-08 11:57:07Z

Buddy use version 3.0.4 and follow example below:

    ArrayList<BarEntry>() barEntries = new ArrayList<BarEntry>();

    barEntries.add(new BarEntry(0, 1));
    barEntries.add(new BarEntry(1, 2));
    barEntries.add(new BarEntry(2, 4));
    barEntries.add(new BarEntry(3, 6));
    barEntries.add(new BarEntry(4, 5));
    barEntries.add(new BarEntry(5, 7));

    barDataSet = new BarDataSet(barEntries, "Contracts");
    barDataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    //        barDataSet.setColors(ColorTemplate.COLORFUL_COLORS);
    barDataSet.setColor(getColor("defaultYellow"));
    barDataSet.setHighlightEnabled(true);
    barDataSet.setHighLightColor(Color.RED);
    barDataSet.setValueTextSize(defaultValueTextSize);
    barDataSet.setValueTextColor(getColor("primaryDark"));

    BarData barData = new BarData(barDataSet);

    barChart.getDescription().setText("No. of Contracts signed in 6 months");
    barChart.getDescription().setTextSize(12);
    barChart.setDrawMarkers(true);
    barChart.setMarker(markerView(context));
    barChart.getAxisLeft().addLimitLine(lowerLimitLine(2,"Minimum",2,12,getColor("defaultOrange"),getColor("defaultOrange")));
    barChart.getAxisLeft().addLimitLine(upperLimitLine(5,"Target",2,12,getColor("defaultGreen"),getColor("defaultGreen")));
    barChart.getAxisLeft().setAxisMinimum(0);
    barChart.getXAxis().setPosition(XAxis.XAxisPosition.BOTH_SIDED);

ArrayList<String> labels = new ArrayList<String> ();

    labels.add( "JAN");
    labels.add( "FEB");
    labels.add( "MAR");
    labels.add( "APR");
    labels.add( "MAY");
    labels.add( "JUN");


    barChart.getXAxis().setValueFormatter(new IndexAxisValueFormatter(labels));
    barChart.animateY(1000);

    barChart.getXAxis().setGranularityEnabled(true);
    barChart.getXAxis().setGranularity(1.0f);
    barChart.getXAxis().setLabelCount(barDataSet.getEntryCount());

    barChart.setData(barData);

Andy Ho · Accepted Answer · 2018-03-02 22:43:13Z

0

one days ago ,i have same question

ArrayList<String> months = new ArrayList<>();
months.add("Jan");
months.add("Feb");
months.add("Mar");
months.add("Apr");
months.add("May");
months.add("June");

change by:

final HashMap<Integer,String>nuMap = new HashMap<>();
nuMap.put(0,"Jan");
nuMap.put(1,"Feb");
nuMap.put(2,"Mar");
nuMap.put(3,"Apr");
nuMap.put(4,"May");
nuMap.put(5,"June");

and now setValueFormatter

XAxis xAxis = yourchart.getXAxis();
    xAxis.setValueFormatter(new IAxisValueFormatter() {
        @Override
        public String getFormattedValue(float value, AxisBase axis) {
            return nuMap.get((int)value);
        }

    });

new it's OK you can plot the XAxis Label's word!

answered Mar 2, 2018 at 22:43

Andy Ho

1,1148 silver badges15 bronze badges

1 Comment

ded-logoped Over a year ago

I did everything according your recommendation, but: Error:(82, 13) error: method does not override or implement a method from a supertype

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