Quick fix for AC, C/CE and comma buttons

Author: gruszm

app/src/main/java/com/example/kalkulator/activities/SimpleCalculatorActivity.java

@@ -109,6 +109,7 @@ private void clearOrClearAllOnClick(View view)
         {
             operationTextView.setText("");
             prevValueTextView.setText("");
+            CalculatorHandler.setNewValueFlag(false);
         }
         else
         {
@@ -141,6 +142,7 @@ public void allClearOnClick(View v)
         valueTextView.setText("0");
         prevValueTextView.setText("");
         operationTextView.setText("");
+        CalculatorHandler.setNewValueFlag(false);
 
         makeStandardVibration();
     }
@@ -190,6 +192,8 @@ public void commaOnClick(View v)
             valueTextView.setText(valueTextView.getText() + ",");
         }
 
+        CalculatorHandler.setNewValueFlag(false);
+
         makeStandardVibration();
     }
 }