Question

我有一个控制器，它有一个如下定义的组合框：

private ComboBox warehouseComboBox;

以及在该控制器中填充组合框的方法

@FXML
void createWarehouseInstance (ActionEvent event){

    ArrayList<BikePart> inventory = new ArrayList<>(); //empty inventory
    String whName = warehouseNameField.getText();
    warehouse wh = new warehouse(whName, inventory); //create new instance

    warehouseComboBox.getItems().add(wh);

    warehouseArrayList.add(wh); //add instance to arrayList

    warehouseNameField.clear(); //clear text box


}

我要做的是获取该组合框的状态，并确定我将操作的类的哪个实例。

我的尝试是这种方法。我根据使用组合框选择的实例显示自行车零件列表。

@FXML
void showParts(){

    bikePartList.clear();

    bikePartList.appendText("Name\tNumber\tListPrice\tSalePrice\tQuantity\tOnSale?\n");

    Object selection = warehouseComboBox.getSelectionModel().getSelectedItem();

    if (warehouseArrayList.contains(selection)){

        bikePartList.appendText(warehouse.printAll()); //what do I do here?

    }

}

对于上下文，仓库持有BikeParts，我正在弄清楚如果我想动态创建仓库，我就不能让这个静态

Answer 1

如果我理解你要做的事情：

首先使用正确的类型声明您的ComboBox：

private ComboBox<Warehouse> warehouseComboBox;

然后你可以做

@FXML
void showParts(){

    bikePartList.clear();

    bikePartList.appendText("Name\tNumber\tListPrice\tSalePrice\tQuantity\tOnSale?\n");

    Warehouse selectedWarehouse = warehouseComboBox.getSelectionModel().getSelectedItem();

    // I think this is what you're trying to do:
    bikePartList.appendText(selectedWarehouse.printAll()); //what do I do here?


}

请注意，我更改了您的班级名称以符合standard naming conventions。

JavaFX组合框查看仓库实例

1 个答案: