Merge pull request #464 from AppDevNext/KotlinIDataSet

Kotlin IDataSet

Author: hannesa2

MPChartLib/src/main/java/com/github/mikephil/charting/charts/LineChart.kt

@@ -39,13 +39,13 @@ open class LineChart : BarLineChartBase<LineData?>, LineDataProvider {
 
         // Min and max values...
         val yAxisValueFormatter = axisLeft.valueFormatter
-        val minVal = yAxisValueFormatter.getFormattedValue(lineData.yMin, null)
-        val maxVal = yAxisValueFormatter.getFormattedValue(lineData.yMax, null)
+        val minVal = yAxisValueFormatter?.getFormattedValue(lineData.yMin, null)
+        val maxVal = yAxisValueFormatter?.getFormattedValue(lineData.yMax, null)
 
         // Data range...
         val xAxisValueFormatter = xAxis.valueFormatter
-        val minRange = xAxisValueFormatter.getFormattedValue(lineData.xMin, null)
-        val maxRange = xAxisValueFormatter.getFormattedValue(lineData.xMax, null)
+        val minRange = xAxisValueFormatter?.getFormattedValue(lineData.xMin, null)
+        val maxRange = xAxisValueFormatter?.getFormattedValue(lineData.xMax, null)
         val entries = if (numberOfPoints == 1) "entry" else "entries"
         return String.format(
             Locale.getDefault(), "The line chart has %d %s. " +

MPChartLib/src/main/java/com/github/mikephil/charting/components/LimitLine.java

@@ -16,7 +16,7 @@
 public class LimitLine extends ComponentBase {
 
     /** limit / maximum (the y-value or xIndex) */
-    private float mLimit;
+    private final float mLimit;
 
     /** the width of the limit line */
     private float mLineWidth = 2f;
@@ -130,7 +130,7 @@ public void disableDashedLine() {
      * disabled
      */
     public boolean isDashedLineEnabled() {
-        return mDashPathEffect == null ? false : true;
+        return mDashPathEffect != null;
     }
 
     /**

MPChartLib/src/main/java/com/github/mikephil/charting/components/LimitRange.java

@@ -39,7 +39,7 @@ public float getHigh() {
 	/**
 	 * limit / maximum (the y-value or xIndex)
 	 */
-	private Range mLimit;
+	private final Range mLimit;
 
 	/**
 	 * the width of the limit line
@@ -182,7 +182,7 @@ public void disableDashedLine() {
 	 * disabled
 	 */
 	public boolean isDashedLineEnabled() {
-		return mDashPathEffect == null ? false : true;
+		return mDashPathEffect != null;
 	}
 
 	/**