radiogroup converters.java

@InverseMethod("buttonIdToProcurementType")
public static int procurementTypeToButtonId(ProcurementType procurementType ){
   int selectedButtonId = -1;

   if(procurementType == null){
       return selectedButtonId;
   }

   switch (procurementType){
      case BOUGHT: {
          selectedButtonId = R.id.radioBtn_bought;
          break;
      }
      case RECEIVED: {
          selectedButtonId = R.id.radioBtn_received;
          break;
      }
    }
    return selectedButtonId;
}

public static ProcurementType buttonIdToProcurementType(int selectedButtonId){
   ProcurementType procurementType = null;
   switch (selectedButtonId){
      case R.id.radioBtn_bought: {
          procurementType = ProcurementType.BOUGHT;
          break;
      }
      case R.id.radioBtn_received: {
          procurementType = ProcurementType.RECEIVED;
      }
   }
   return procurementType;
}