Merge pull request #171 from AppDevNext/FixLint

Fix lint warning

Author: hannesa2

MPChartLib/src/main/java/com/github/mikephil/charting/charts/PieChart.java

@@ -19,7 +19,6 @@
 import com.github.mikephil.charting.utils.MPPointF;
 import com.github.mikephil.charting.utils.Utils;
 
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
 
@@ -34,7 +33,7 @@ public class PieChart extends PieRadarChartBase<PieData> {
      * rect object that represents the bounds of the piechart, needed for
      * drawing the circle
      */
-    private RectF mCircleBox = new RectF();
+    private final RectF mCircleBox = new RectF();
 
     /**
      * flag indicating if entry labels should be drawn or not
@@ -76,7 +75,7 @@ public class PieChart extends PieRadarChartBase<PieData> {
      */
     private CharSequence mCenterText = "";
 
-    private MPPointF mCenterTextOffset = MPPointF.getInstance(0, 0);
+    private final MPPointF mCenterTextOffset = MPPointF.getInstance(0, 0);
 
     /**
      * indicates the size of the hole in the center of the piechart, default:
@@ -304,10 +303,9 @@ public boolean needsHighlight(int index) {
         if (!valuesToHighlight())
             return false;
 
-        for (int i = 0; i < mIndicesToHighlight.length; i++)
-
-            // check if the xvalue for the given dataset needs highlight
-            if ((int) mIndicesToHighlight[i].getX() == index)
+        // check if the xvalue for the given dataset needs highlight
+        for (Highlight highlight : mIndicesToHighlight)
+            if ((int) highlight.getX() == index)
                 return true;
 
         return false;