[Chartjs]-Chart.js responsive pie chart

Version 3 of chart.js fixes this issue.

Your pie charts creates the biggest circle it possibly can, if you wanted it to fill up your entire rectangle you would need it to print an ellipse. You can either give the circle some more height allowing it to grow, or you can give it less width and put something next to it. I am running into the same problem with aChartEngine in Android.