Added Rounded corner for Pie chart

Author: Mohini Katara

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/PieChartActivity.java

@@ -75,13 +75,14 @@ protected void onCreate(Bundle savedInstanceState) {
         chart.setCenterText(generateCenterSpannableText());
 
         chart.setDrawHoleEnabled(true);
-        chart.setHoleColor(Color.WHITE);
+        chart.setHoleColor(Color.TRANSPARENT);
 
-        chart.setTransparentCircleColor(Color.WHITE);
+        chart.setTransparentCircleColor(Color.TRANSPARENT);
         chart.setTransparentCircleAlpha(110);
 
-        chart.setHoleRadius(58f);
-        chart.setTransparentCircleRadius(61f);
+        chart.setHoleRadius(50f);
+
+        chart.setTransparentCircleRadius(0f);
 
         chart.setDrawCenterText(true);
 
@@ -172,7 +173,7 @@ private void setData(int count, float range) {
         chart.highlightValues(null);
 
         PieChartRenderer renderer =(PieChartRenderer) chart.getRenderer();
-        renderer.setRoundedCornerRadius(10f);
+        renderer.setRoundedCornerRadius(30f);
         dataSet.setSliceSpace(renderer.getRoundedCornerRadius()/2);
 
         chart.invalidate();

MPChartLib/src/main/java/com/github/mikephil/charting/renderer/PieChartRenderer.java

@@ -78,9 +78,10 @@ public class PieChartRenderer extends DataRenderer {
      */
     public void setRoundedCornerRadius(float radius){
         mRoundedCornerPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
-        mRoundedCornerPaint.setStrokeWidth(radius);
         mRoundedCornerPaint.setStyle(Style.STROKE);
         mRoundedCornerPaint.setAntiAlias(true);
+        mRoundedCornerPaint.setStrokeWidth(radius);
+
     }
 
     /**
@@ -428,7 +429,7 @@ protected void drawDataSet(Canvas c, IPieDataSet dataSet) {
 
             mBitmapCanvas.drawPath(mPathBuffer, mRenderPaint);
 
-            // Draw rounded corner path with paint object for the given radius
+            // Draw rounded corner path with paint object slice with the given radius
             if (getRoundedCornerRadius()>0) {
                 mBitmapCanvas.drawPath(mPathBuffer, mRoundedCornerPaint);
             }