Display datapoint value above datapoint in GraphView

Question

I'm using GraphView for Android, and i'm trying to display the datapoint value above said datapoint in case of an onClick event. Currently, i'm using

series.setOnDataPointTapListener(new OnDataPointTapListener() { @Override public void onTap(Series series, DataPointInterface dataPoint) { Toast.makeText(MainActivity.this, dataPoint.getY(), Toast.LENGTH_SHORT).show(); } });

Is there a way of showing the value right above the datapoint ? Any help would be much appreciated.

Answer 1

I was able to add text on top of datapoints by using PointsGraphSeries with a custom shape (text):

PointsGraphSeries<DataPoint> seriesPoints = new PointsGraphSeries<>(dataPoints);
seriesPoints.setCustomShape(new PointsGraphSeries.CustomShape() {
    @Override
    public void draw(Canvas canvas, Paint paint, float x, float y, DataPointInterface dataPoint) {
        paint.setColor(Color.BLACK);
        paint.setTextSize(38);
        canvas.drawText(String.valueOf(dataPoint.getY()), x, y, paint);
    }
});
mGraph.addSeries(seriesPoints);

In your case, you could remove the text after some delay with:

mGraph.removeSeries(seriesPoints);