Question

quisiera mostrar un gráfico en android studio utilizando la librería MPAndroidChart que se conecte a MySQL para mostrar los datos.
Tengo el gráfico solo me falta la conexión a la base de datos pero no tengo idea de como hacerla.

    /**
     * Crea el grafico
     * */
    public void setDataChart()
    {
        //obtiene registro de la base de datos
        sqlite.openConnection();
        ArrayList<Indicadores> candidatos = sqlite.getCandidatos();
        sqlite.closeConnection();

        //propiedades de grafico
        pieChart.setRotationEnabled(true);
        pieChart.animateXY(1000, 1000);
        pieChart.setHoleRadius(36f);
        pieChart.setDescription("");

        //valores
        ArrayList<Entry> yVals = new ArrayList<Entry>();
        ArrayList<String> xVals = new ArrayList<String>();
        //colores de la torta
        ArrayList<Integer> colors = new ArrayList<Integer>();
        colors.add(Color.parseColor("#FF0000"));
        colors.add(Color.parseColor("#958A39FF"));
        colors.add(Color.parseColor("#95FF4B32"));
        colors.add(Color.parseColor("#9530A400"));
        colors.add(Color.parseColor("#95258CFF"));

        sqlite.openConnection();
        float total_votos= sqlite.getTotalVotos();
        sqlite.closeConnection();       

        //ingresa datos a grafico
        for(int index=0;index<candidatos.size();index++)
        {
            float votos = (candidatos.get(index).getVotos()/total_votos)*100f;
            yVals.add(new Entry(votos,index));          
            xVals.add( candidatos.get(index).getSigla());
        }

        PieDataSet dataSet = new PieDataSet(yVals, "");
        dataSet.setSliceSpace(3f);
        dataSet.setSelectionShift(5f);
        dataSet.setColors(colors);

        PieData data = new PieData(xVals, dataSet);
        data.setValueFormatter( new PercentFormatter() );
        data.setValueTextSize(12f);
        data.setValueTextColor(Color.WHITE);

        pieChart.setData(data);
        pieChart.highlightValues(null);
        pieChart.invalidate();      
    }

    /**
     * Crea una tabla con los registros de votacion
     * */
    private void createDataTable()
    {
        sqlite.openConnection();        
        ArrayList<Indicadores> candidatos = sqlite.getCandidatos();
        sqlite.closeConnection();

        //
        TableRow.LayoutParams tableRowParams = new TableRow.LayoutParams();
        tableRowParams.setMargins(5, 3, 5, 3);
        tableRowParams.weight = 1;
        //encabezado
        TableRow rowHead = new TableRow(this);          
        rowHead.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT));     
        //col 1
        TextView col1 = new TextView(this);
        col1.setBackgroundResource(R.drawable.tv_bg);
        col1.setGravity(Gravity.CENTER);
        col1.setTypeface(null, Typeface.BOLD);
        col1.setTextSize(12);
        col1.setTextColor((Color.parseColor("#FFFFFF")));
        col1.setPadding(6, 10, 6, 10);
        col1.setText( "SIGLA" );            
        //col 2
        TextView col2 = new TextView(this);
        col2.setBackgroundResource(R.drawable.tv_bg);
        col2.setGravity(Gravity.CENTER);
        col2.setTypeface(null, Typeface.BOLD);
        col2.setTextSize(12);
        col2.setTextColor((Color.parseColor("#FFFFFF")));
        col2.setPadding(6, 10, 6, 10);          
        col2.setText( "INDICADORES" );
        //col 3
        TextView col3 = new TextView(this);
        col3.setBackgroundResource(R.drawable.tv_bg);
        col3.setGravity(Gravity.CENTER);
        col3.setTypeface(null, Typeface.BOLD);
        col3.setTextSize(12);
        col3.setTextColor((Color.parseColor("#FFFFFF")));
        col3.setPadding(6, 10, 6, 10);
        col3.setText( "PORCENTAJE" );

//col 4
        TextView col4 = new TextView(this);
        col4.setBackgroundResource(R.drawable.tv_bg);
        col4.setGravity(Gravity.CENTER);
        col4.setTypeface(null, Typeface.BOLD);
        col4.setTextSize(12);
        col4.setTextColor((Color.parseColor("#FFFFFF")));
        col4.setPadding(6, 10, 6, 10);
        col4.setText( "FECHA" );

        //a�ade columnas
        rowHead.addView(col1,tableRowParams);
        rowHead.addView(col2,tableRowParams);
        rowHead.addView(col3,tableRowParams);
        rowHead.addView(col4,tableRowParams);
        //a�ade fila
        table_layout.addView(rowHead);

        //filas de datos
        for(Indicadores c: candidatos)
        {
            TableRow row = new TableRow(this);          
            row.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT));

            //col 1
            TextView tv1 = new TextView(this);
            tv1.setBackgroundResource(R.drawable.tv_bg);
            tv1.setGravity(Gravity.CENTER);
            tv1.setTypeface(null, Typeface.BOLD);
            tv1.setTextSize(12);
            tv1.setTextColor((Color.parseColor("#FFFFFF")));
            tv1.setPadding(6, 10, 6, 10);
            tv1.setText( c.getSigla() );            
            //col 2
            TextView tv2 = new TextView(this);
            tv2.setBackgroundResource(R.drawable.tv_bg);
            tv2.setGravity(Gravity.CENTER);
            tv2.setTextSize(12);
            tv2.setTextColor((Color.parseColor("#FFFFFF")));
            tv2.setPadding(6, 10, 6, 10);           
            tv2.setText( c.getNombre() );

//col 4
            TextView tv4 = new TextView(this);
            tv4.setBackgroundResource(R.drawable.tv_bg);
            tv4.setGravity(Gravity.CENTER);
            tv4.setTextSize(12);
            tv4.setTextColor((Color.parseColor("#FFFFFF")));
            tv4.setPadding(6, 10, 6, 10);
            tv4.setText( c.getFecha() );

            //col 3
            TextView tv3 = new TextView(this);
            tv3.setBackgroundResource(R.drawable.tv_bg);
            tv3.setGravity(Gravity.CENTER);
            tv3.setTextSize(12);
            tv3.setTextColor((Color.parseColor("#FFFFFF")));
            tv3.setPadding(6, 10, 6, 10);
            tv3.setText( String.valueOf(c.getVotos()) );
            //a�ade columnas 
            row.addView(tv1,tableRowParams);
            row.addView(tv2,tableRowParams);
            row.addView(tv3,tableRowParams);
            row.addView(tv4,tableRowParams);
            //a�ade fila
            table_layout.addView(row);
        }        

    }   

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.chart, menu);
        return true;
    }