protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);

            var relLayout = new Android.Widget.RelativeLayout(this);


            tvX      = new TextView(this);
            tvY      = new TextView(this);
            tvX.Text = "textview xx";
            tvY.Text = "textview yy";

            mChart = new BarChart(this);
            mChart.SetDrawBarShadow(false);
            mChart.SetDrawValueAboveBar(true);
            mChart.Description.Enabled = true;
            mChart.SetMaxVisibleValueCount(60);
            mChart.SetPinchZoom(true);
            mChart.SetBackgroundColor(Android.Graphics.Color.White);

            setData(12, 50);

            relLayout.AddView(mChart, 650, 1000);


            SetContentView(relLayout);
        }