How to show x-axis labels in BubbleChart?

Question

I am using MPAndroidChart BubbleChart v3.0.2. In this version I am unable to set my custom labels on xAxis. how can I set xAxis label for each bar. i.e (label1, label2 etc)

if any one worked in it or know how to do kindly share.

Answer 1

You can do this by extending IValueFormatter. If you wanted to create a simple mapping of Entry to String labels you could do it like this:

import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.utils.ViewPortHandler;

import java.util.Map;

public class MapValueFormatter implements IValueFormatter {

    private final Map<Entry, String> labels;

    public MapValueFormatter(Map<Entry, String> labels) {
        this.labels = labels;
    }

    @Override
    public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
        String label = labels.get(entry);
        if (label == null) {
            return "";
        }

        return label;
    }
}

Then you can create labels like this:

Map<Entry,String> labels = new HashMap<>();
for (BubbleEntry bubbleEntry : dataSet.getValues()) {
    labels.put(bubbleEntry, generateRandomString());
}
dataSet.setValueFormatter(new MapValueFormatter(labels));

The result looks like this:

I am sure you can do better though. Good luck!