GraphView code

        RelativeLayout endGame = (RelativeLayout)findViewById(R.id.endGame_RelativeLayout);

        LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
                                        300);

        GraphViewData[] GraphViewData_PageTimes = new GraphViewData[pagesTime.length];
        for (int i=0;i<pagesTime.length;i++) {
            BigDecimal pagetime = new BigDecimal(pagesTime[i]).setScale(1,BigDecimal.ROUND_HALF_UP);
            GraphViewData_PageTimes[i]= new GraphViewData(i, pagetime.doubleValue());
        }

        GraphViewData[] GraphViewData_PageMistakes = new GraphViewData[pagesMistakes.length];
        for (int i=0;i<pagesMistakes.length;i++) {
            GraphViewData_PageTimes[i] = new GraphViewData(i, pagesMistakes[i]);
        }

        GraphViewStyle stylePageTimes  = new GraphViewStyle(Color.rgb(50, 200, 0),5);
        GraphViewSeries seriesPageTimes = new GraphViewSeries("time per page", stylePageTimes, GraphViewData_PageTimes);

        GraphViewStyle stylePageMistakes  = new GraphViewStyle(Color.rgb(200, 50, 0),5);
        GraphViewSeries seriesPageMistakes = new GraphViewSeries("mistaked per page", stylePageMistakes, GraphViewData_PageMistakes);

        LineGraphView graphView = new LineGraphView(
              this
              , "statistics"
        );
        // add data
        graphView.addSeries(seriesPageMistakes);
        graphView.addSeries(seriesPageTimes);
        // optional - set view port, start=2, size=10
        //graphView.setViewPort(2, 10);
        graphView.setScalable(true);
        // optional - legend
        graphView.setShowLegend(true);

            params.addRule(RelativeLayout.ABOVE,R.id.endGameButton_PlayAgain);
        params.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
        params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
        graphView.setLayoutParams(params);
        endGame.addView(graphView);
    }