2016-09-25 59 views
1

对于我的一个Java项目,我使用JavaFX来制作收银机。 要查看GUI的图片,请 click here.如何在运行JavaFX容器类后立即在GUI中隐藏元素?

正如在GUI中所示,程序会要求用户输入就可以找到很多用户买的,用户付出了多少项目,并显示在必要的变革一个标签。但是,我想在某些点上隐藏此UI的某些元素。目前,我知道如何使用这些命令来隐藏标签和按钮:

label.setVisible(false); 
button.setVisible(false); 

不过,我需要在这里有所有的标签上说+ 7.00% Sales Tax开始就看不见权当我运行GUIController类所以下面的元素我无需点击任何其他按钮即可进行这些更改。那么,你们有什么建议吗?任何帮助表示赞赏!

一下现金出纳机(包含主类)

package cashregister; 

import javafx.application.Application; 
import javafx.fxml.FXMLLoader; 
import javafx.scene.Parent; 
import javafx.scene.Scene; 
import javafx.stage.Stage; 

/** 
* 
* @author Sammy 
*/ 
public class CashRegister extends Application { 

    @Override 
    public void start(Stage stage) throws Exception { 
     Parent root = FXMLLoader.load(getClass().getResource("RegisterGUI.fxml")); 

     Scene scene = new Scene(root); 

     stage.setScene(scene); 
     stage.show(); 
    } 

    /** 
    * @param args the command line arguments 
    */ 
    public static void main(String[] args) { 
     launch(args); 
    } 

} 

RegisterGUIController

(我ommitted所有的 “实际” 的代码,这样我就不会像我在欺骗我的项目)

package cashregister; 

import java.net.URL; 
import java.util.ResourceBundle; 
import javafx.event.ActionEvent; 
import javafx.fxml.FXML; 
import javafx.fxml.Initializable; 
import javafx.scene.control.Button; 
import javafx.scene.control.Label; 
import javafx.scene.control.TextField; 

/** 
* 
* @author Sammy 
*/ 
public class RegisterGUIController implements Initializable { 

    @FXML 
    private Label title, lblSubtotal, lblTax, lblLine, lblTotalText, lblTotal,lblChangeText, lblChange; 

    @FXML 
    private Button handleNoodle, handlePizza, handleWing, handlePie, handleIce; 

    @FXML 
    private TextField inputNoodle, inputPizza, inputWings, inputPies, inputIce, inputPayment; 

    @FXML 
    private void handleNoodle(ActionEvent event) { 
    } 

    @FXML 
    private void handlePizza(ActionEvent event) {  
    } 

    @FXML 
    private void handleWing(ActionEvent event) {  
    } 

    @FXML 
    private void handlePie(ActionEvent event) { 
    } 

    @FXML 
    private void handleIce(ActionEvent event) { 


    } 

    @Override 
    public void initialize(URL url, ResourceBundle rb) { 
    }  

} 

注册GUI

<?xml version="1.0" encoding="UTF-8"?> 

<?import javafx.scene.effect.*?> 
<?import javafx.scene.text.*?> 
<?import java.lang.*?> 
<?import java.util.*?> 
<?import javafx.scene.*?> 
<?import javafx.scene.control.*?> 
<?import javafx.scene.layout.*?> 

<AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" prefHeight="415.0" prefWidth="320" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8" fx:controller="cashregister.RegisterGUIController"> 
    <children> 
     <Button fx:id="handlePizza" layoutX="27.0" layoutY="107.0" onAction="#handlePizza" text="Pizza" AnchorPane.topAnchor="110.0" /> 
     <Label fx:id="title" layoutX="118.0" layoutY="14.0" minHeight="16" minWidth="69" text="Cash Register" textAlignment="CENTER" AnchorPane.rightAnchor="118.0"> 
     <font> 
      <Font name="System Bold" size="14.0" /> 
     </font></Label> 
     <Label layoutX="39.0" layoutY="40.0" text="Please select the items you would like to buy" /> 
     <Button fx:id="handlePie" layoutX="27.0" layoutY="169.0" mnemonicParsing="false" onAction="#handlePie" text="Blueberry Pie" AnchorPane.topAnchor="180.0" /> 
     <Button fx:id="handleWing" layoutX="27.0" layoutY="138.0" mnemonicParsing="false" onAction="#handleWings" text="Chicken Wings" AnchorPane.topAnchor="145.0" /> 
     <Button fx:id="handleNoodle" layoutX="27.0" layoutY="75.0" mnemonicParsing="false" onAction="#handleNoodles" text="Noodles" AnchorPane.topAnchor="75.0" /> 
     <Button fx:id="handleIce" layoutX="28.0" layoutY="199.0" mnemonicParsing="false" onAction="#handleIce" text="Ice Cream" AnchorPane.topAnchor="215.0" /> 
     <Label fx:id="lblLine" layoutX="21.0" layoutY="308.0" text="_______________________________________________________" AnchorPane.bottomAnchor="95.0" /> 
     <Label layoutX="57.0" layoutY="210.0" text="Subtotal:" underline="true" AnchorPane.bottomAnchor="121.0" AnchorPane.leftAnchor="57.0"> 
     <font> 
      <Font size="12.5" /> 
     </font> 
     </Label> 
     <TextField fx:id="inputPayment" layoutX="143.0" layoutY="282.0" promptText="Enter Your Payment Here" AnchorPane.bottomAnchor="43.0" /> 
     <Label fx:id="lblubtotal" layoutX="113.0" layoutY="210.0" text="\$0.00" AnchorPane.bottomAnchor="121.0" AnchorPane.leftAnchor="113.0"> 
     <font> 
      <Font size="12.5" /> 
     </font> 
     </Label> 
     <Label fx:id="lblTax" layoutX="48.0" layoutY="303.0" text="+ 7.00% Sales Tax" AnchorPane.bottomAnchor="98.0"> 
     <font> 
      <Font size="12.5" /> 
     </font> 
     </Label> 
     <Label fx:id="lblTotalText" layoutX="14.0" layoutY="272.0" text="Total:" underline="true" AnchorPane.bottomAnchor="60.0"> 
     <font> 
      <Font size="14.0" /> 
     </font> 
     </Label> 
     <Label fx:id="lblTotal" layoutX="57.0" layoutY="272.0" text="\$0.00" AnchorPane.bottomAnchor="60.0"> 
     <font> 
      <Font size="14.0" /> 
     </font> 
     </Label> 
     <Button fx:id="handleDone" layoutX="177.0" layoutY="272.0" mnemonicParsing="false" onAction="#handleButton" text="Done Shopping" AnchorPane.bottomAnchor="118.0"> 
     <effect> 
      <DropShadow blurType="GAUSSIAN" spread="0.1" /> 
     </effect> 
     </Button> 
     <Label fx:id="lblChangeText" layoutX="38.0" layoutY="295.0" text="Your Change:" AnchorPane.bottomAnchor="36.0"> 
     <font> 
      <Font size="13.0" /> 
     </font> 
     </Label> 
     <Label fx:id="lblChange" layoutX="127.0" layoutY="296.0" text="\$0.00" AnchorPane.bottomAnchor="36.0" /> 
     <TextField fx:id="inputNoodles" layoutX="143.0" layoutY="75.0" onAction="#inputNoodles" promptText="# of Bowls" /> 
     <TextField fx:id="inputPizza" layoutX="143.0" layoutY="110.0" onAction="#inputPizza" promptText="# of Boxes" /> 
     <TextField fx:id="inputWings" layoutX="143.0" layoutY="145.0" onAction="#inputWings" promptText="# of Plates" /> 
     <TextField fx:id="inputPies" layoutX="143.0" layoutY="180.0" onAction="#inputPies" promptText="# of Pies" /> 
     <TextField fx:id="inputIce" layoutX="143.0" layoutY="215.0" promptText="# of Containers" /> 
    </children> 
</AnchorPane> 
+2

如果您使用的是fxml,请将'visible'值设置为false。另外,你可以使用不同的照片网站吗?像imgur? –

+0

您没有通过链接分享图片。如果您在此处发布链接,您应该通过链接进行分享,以便任何人都可以在不需要请求访问的情况下查看它。 – Vampire

+0

您正在使用什么样的容器类? – donkon

回答

1

实际上,您可以将所需的代码放入initialize方法中,该方法仅在完成GUI设置后运行。这意味着这将像一个构造函数一样工作,但不会抛出一个nullPointerError,因为在这部分代码运行时GUI已经存在。

例如,你可以在你的RegisterGUIController做到这一点:

@Override 
    public void initialize(URL url, ResourceBundle rb) { 
     lblTax.setVisible(false); 
     lblLine.setVisible(false); 
     lblTotalText.setVisible(false); 
     lblTotal.setVisible(false); 
     lblChangeText.setVisible(false); 
     lblChange.setVisible(false); 
     inputPayment.setVisible(false); 
    } 

祝你的项目!

+2

'之前设置可见性。您还可以将'visible =“false”'添加到要隐藏的每个节点上的fxml文件。 –