How to set the x-axis label with MPAndroidChart

Question

I use MPAndroidChart for my app like this:

but I can not add tag like that

Answer 1

I tried this version: implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0':

public class BarChartActivity2 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_bar_chart2);

        BarChart chart = (BarChart) findViewById(R.id.barchart);

        int[] numArr = {1, 2, 3, 4, 5, 6};
        List entries = new ArrayList();
        for (int num : numArr) {
            entries.add(new BarEntry(num, num));
        }
        BarDataSet dataSet = new BarDataSet(entries, "Numbers");
        BarData data = new BarData(dataSet);

        ValueFormatter xAxisFormatter = new DayAxisValueFormatter(chart);
        XAxis xAxis = chart.getXAxis();
        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
        xAxis.setDrawGridLines(false);
        xAxis.setGranularity(1f); // only intervals of 1 day
        xAxis.setLabelCount(7);
        xAxis.setValueFormatter(xAxisFormatter);

        chart.setData(data);
        chart.invalidate();
    }

    public class DayAxisValueFormatter extends ValueFormatter {
        private final BarLineChartBase chart;
        public DayAxisValueFormatter(BarLineChartBase chart) {
            this.chart = chart;
        }
        @Override
        public String getFormattedValue(float value) {
            return "your text " + value;
        }
    }
}

Here is the output: