如何解决如何在 JavaFX 中将容器从一个窗口转移到另一个窗口
我使用 onclick 方法获得了一个名为“Transfer”的按钮和一个窗口中包含 3 个按钮的 VBox。 第二个窗口只有一个 HBox 容器。 我想了解如何通过按下传输按钮将 VBox 发送到另一个窗口中的 HBox。
主类:
package testproject;
import javafx.application.Application;
import testproject.screen1.Screen1;
import testproject.screen2.Screen2;
import javafx.stage.Stage;
public class Main extends Application {
private Screen1 screen1;
private Screen2 screen2;
@Override
public void start(Stage primaryStage) throws Exception{
screen1 = new Screen1(this,new Stage());
screen2 = new Screen2(this,primaryStage);
}
public static void main(String[] args) {
Application.launch(args);
}
}
Screen1 类:
package testproject.screen1;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import testproject.Main;
import java.io.IOException;
public class Screen1 {
public Screen1(Main main,Stage stage){
FXMLLoader loader = new FXMLLoader();
try {
Parent root =
loader.load(getClass().getResourceAsstream("/testproject/screen1/screen1.fxml"));
stage.setTitle("Screen 1");
stage.setScene(new Scene(root,300,275));
}
catch (IOException e) {
e.printstacktrace();
}
stage.show();
}
}
Screen2 类:
package testproject.screen2;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import testproject.Main;
import java.io.IOException;
public class Screen2 {
public Screen2(Main main,Stage stage) {
FXMLLoader loader = new FXMLLoader();
try {
Parent root =
loader.load(getClass().getResourceAsstream("/testproject/screen2/screen2.fxml"));
stage.setTitle("Screen 2");
stage.setScene(new Scene(root,275));
}
catch (IOException e) {
e.printstacktrace();
}
stage.show();
}
}
Screen1Controller 类:
package testproject.screen1;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.VBox;
public class Screen1Controller {
@FXML
private AnchorPane Pane1;
@FXML
private VBox VBoxScreen1;
@FXML
private Button TransferButton;
@FXML
void transferToScreen2(MouseEvent event){
}
}
Screen2Controller 类:
package testproject.screen2;
import javafx.fxml.FXML;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.HBox;
public class Screen2Controller {
@FXML
private AnchorPane Pane2;
@FXML
private HBox HBoxScreen2;
}
解决方法
我能想到的一种方法是将回调/消费者传递给 screen2 控制器,让它知道如何处理其节点。话虽如此,但可以有许多其他方法来满足此要求。
在我看来,您不需要单独的类来加载屏幕。您可以查看以下工作演示。
Main.java
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class Main extends Application {
@Override
public void start(Stage primaryStage) throws Exception {
FXMLLoader loader2 = new FXMLLoader(getClass() .getResource("screen2.fxml"));
VBox screen2 = loader2.load();
Screen2Controller screen2Controller = loader2.getController();
Stage screen2Stage = new Stage();
Scene scene2 = new Scene(screen2);
screen2Stage.setScene(scene2);
screen2Stage.setTitle("Screen 2");
screen2Stage.setX(900);
screen2Stage.setY(100);
screen2Stage.show();
FXMLLoader loader1 = new FXMLLoader(getClass() .getResource("screen1.fxml"));
VBox screen1 = loader1.load();
Screen1Controller screen1Controller = loader1.getController();
// Set a consumer to the screen1 to let it know what to do
screen1Controller.setTransferer(screen2Controller::moveNode);
Scene scene1 = new Scene(screen1);
primaryStage.setScene(scene1);
primaryStage.setTitle("Screen 1");
primaryStage.setX(100);
primaryStage.setY(100);
primaryStage.show();
}
public static void main(String[] args) {
Application.launch(args);
}
}
Screen1Controller.java
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.Node;
import javafx.scene.control.Button;
import javafx.scene.layout.VBox;
import java.util.function.Consumer;
public class Screen1Controller {
@FXML
private VBox pane1;
@FXML
private VBox vBoxScreen1;
@FXML
private Button transferButton;
private Consumer<Node> transferer;
@FXML
void transferToScreen2(ActionEvent event) {
// First remove the node from the parent.
pane1.getChildren().remove(vBoxScreen1);
// Then send the node to do the other operation.
this.transferer.accept(vBoxScreen1);
}
public void setTransferer(Consumer<Node> transferer) {
this.transferer = transferer;
}
}
screen1.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<VBox fx:id="pane1" xmlns="http://javafx.com/javafx"
xmlns:fx="http://javafx.com/fxml"
fx:controller="com.stackoverflow.javafx.issue7.Screen1Controller"
prefHeight="400.0" prefWidth="600.0" spacing="10">
<children>
<VBox fx:id="vBoxScreen1" spacing="10" style="-fx-border-width:2px;-fx-border-color:red;-fx-background-color:yellow;" prefWidth="200" maxWidth="200" prefHeight="200">
<children>
<Button text="Button 1"/>
<Button text="Button 2"/>
<Button text="Button 3"/>
</children>
<padding>
<Insets topRightBottomLeft="10" />
</padding>
</VBox>
<Button fx:id="transferButton" text="Transfer" onAction="#transferToScreen2"/>
</children>
<padding>
<Insets topRightBottomLeft="10" />
</padding>
</VBox>
Screen2Controller.java
import javafx.fxml.FXML;
import javafx.scene.Node;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
public class Screen2Controller {
@FXML
private VBox pane2;
@FXML
private HBox hBoxScreen2;
public void moveNode(Node node){
hBoxScreen2.getChildren().add(node);
}
}
screen2.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<VBox fx:id="pane2" xmlns="http://javafx.com/javafx"
xmlns:fx="http://javafx.com/fxml"
fx:controller="com.stackoverflow.javafx.issue7.Screen2Controller"
prefHeight="400.0" prefWidth="600.0" spacing="10">
<children>
<HBox fx:id="hBoxScreen2" spacing="10">
<padding>
<Insets topRightBottomLeft="10" />
</padding>
</HBox>
</children>
<padding>
<Insets topRightBottomLeft="10" />
</padding>
</VBox>
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