GUI Funktionen (Berechnung)

src/ch/spherIC/recurvebowsight/components/RiserSpinner.java

@@ -65,7 +65,8 @@ public class RiserSpinner extends XSpinner {
     public void fireSelectionChangedEvent() {
         OnItemSelectedListener listener = getOnItemSelectedListener();
         if (listener != null) {
-            listener.onItemSelected(this, getSelectedView(), getSelectedItemPosition(), getSelectedView().getId());
+            int id = getSelectedView() != null ? getSelectedView().getId() : 0;
+            listener.onItemSelected(this, getSelectedView(), getSelectedItemPosition(), id);
         }
     }
 

src/ch/spherIC/recurvebowsight/components/SightSpinner.java

@@ -65,7 +65,8 @@ public class SightSpinner extends XSpinner {
     public void fireSelectionChangedEvent() {
         OnItemSelectedListener listener = getOnItemSelectedListener();
         if (listener != null) {
-            listener.onItemSelected(this, getSelectedView(), getSelectedItemPosition(), getSelectedView().getId());
+            int id = getSelectedView() != null ? getSelectedView().getId() : 0;
+            listener.onItemSelected(this, getSelectedView(), getSelectedItemPosition(), id);
         }
     }