MPAndroidChart click listener on chart

Question

I am using MPAndroidChart and would like to know how to perform click event on following graphs and get the related callback: Pie chart: click on particular reason open its detail. Bar chart: click on any bar open its detail. Stacked Bar chart: click on any bar open its detail.

I need to get notified when the chart is clicked.

Answer 1

Use the OnChartValueSelectedListener. You can find the documentation on how to implement it here.

This listener allows you to react on click gestures performed on the charts.

Answer 2

for LineChart

   chart.setOnChartValueSelectedListener(new OnChartValueSelectedListener()
    {
        @Override
        public void onValueSelected(Entry e, Highlight h)
        {
            float x=e.getX();
            float y=e.getY();
        }

        @Override
        public void onNothingSelected()
        {

        }
    });

Answer 3

for LineChart if you are using displayed non float value in Kotlin use below code

lineChart.setOnChartValueSelectedListener(object : OnChartValueSelectedListener 
       {
        override fun onValueSelected(e: Entry, h: Highlight?) {
            val x = e.x.toString()
            val y = e.y
            val selectedXAxisCount = x.substringBefore(".") //this value is float so use substringbefore method
            // another method shown below
            val nonFloat=lineChart.getXAxis().getValueFormatter().getFormattedValue(e.x)
            //if you are display any string in x axis you will get this
        }

        override fun onNothingSelected() {}
    })

Happy coding...