gpt4 book ai didi

java - 混音 Swing/FX : can't dispose a dialog from fxml controller

转载 作者:塔克拉玛干 更新时间:2023-11-01 22:47:44 24 4
gpt4 key购买 nike

场景:顶层容器是一个 Swing JDialog,它有一些 fx 内容,包括一个触发按钮处置的 fx 按钮。当手动创建按钮并使用适当的 eventHandler 配置时,处理工作符合预期(隐藏对话框)。通过 fxml 创建/配置按钮时,不会处理该对话框。下面的示例包含一个手动配置的按钮和一个 fxml 加载/绑定(bind)按钮以查看不同的行为。

问题:

  • 这个例子有什么问题吗?
  • 预期的 swing/fx 交互(手动与 fxml)有什么不同吗?
  • 如何让它在 fxml 中工作?

代码:

package fxml;

import java.io.IOException;

import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.FlowPane;

import javax.swing.JDialog;
import javax.swing.SwingUtilities;

public class DisposeExample {
@FXML
Button closeButton;

Button fxButton;

private JDialog dialog;

/**
* The action handler method used by fx buttons.
*/
public void onAction(final ActionEvent ac) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
System.out.println("onAction: " +ac);
dialog.dispose();
}
});
}

protected Button createFxButton() {
Button fxButton = new Button("close from fx");
fxButton.setOnAction(new javafx.event.EventHandler<ActionEvent>() {

@Override
public void handle(ActionEvent event) {
onAction(event);
}
});
return fxButton;
}

public void initFX() {
final JFXPanel fxPanel = new JFXPanel();
dialog.add(fxPanel);

Platform.runLater(new Runnable() {
@Override
public void run() {
FlowPane parent = null;
try {
parent = FXMLLoader.load(DisposeExample.class.getResource(
"DisposeController.fxml"));
} catch (IOException e) {
e.printStackTrace();
}
fxButton = createFxButton();
parent.getChildren().add(fxButton);
Scene scene = new Scene(parent);
fxPanel.setScene(scene);
}
});
}

public DisposeExample() {
dialog = new JDialog();
dialog.setTitle("Simple Swing Dialog");
initFX();
}

public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JDialog example = new DisposeExample().dialog;
example.setSize(400, 400);
example.setVisible(true);
}
});
}
}

fxml内容:

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

<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>

<FlowPane id="Content" fx:id="windowPanel"
xmlns:fx="http://javafx.com/fxml" fx:controller="fxml.DisposeExample">
<children>
<Button fx:id="closeButton" onAction="#onAction"
prefHeight="35.0" prefWidth="300.0" text="Close (fxml controller)">
</Button>
</children>
</FlowPane>

顺便说一句:有一个 similar question从今年开始,没有答案。

编辑

发生了一些奇怪的事情:运行几分钟后,它抛出一个 OutOfMemoryError - 更深层次的东西不会停止创建......什么?

java.lang.OutOfMemoryError: Java heap space
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2521)
at java.lang.Class.privateGetPublicMethods(Class.java:2641)
at java.lang.Class.privateGetPublicMethods(Class.java:2657)
at java.lang.Class.privateGetPublicMethods(Class.java:2657)
at java.lang.Class.privateGetPublicMethods(Class.java:2657)
at java.lang.Class.privateGetPublicMethods(Class.java:2657)
at java.lang.Class.privateGetPublicMethods(Class.java:2657)
at java.lang.Class.getMethods(Class.java:1457)
at sun.reflect.misc.MethodUtil.getMethods(MethodUtil.java:99)
at com.sun.javafx.fxml.BeanAdapter.updateMethodCache(BeanAdapter.java:265)
at com.sun.javafx.fxml.BeanAdapter.setBean(BeanAdapter.java:250)
at com.sun.javafx.fxml.BeanAdapter.<init>(BeanAdapter.java:213)
at javafx.fxml.FXMLLoader$Element.getValueAdapter(FXMLLoader.java:157)
at javafx.fxml.FXMLLoader$Element.getProperties(FXMLLoader.java:165)
at javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:647)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:570)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2314)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2131)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2028)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2744)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2723)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2709)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2696)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2685)
at fxml.DisposeExample$3.run(DisposeExample.java:65)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:179)
at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:176)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:176)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)

编辑

仅供引用:8u113 中的相同行为,因此提交了 issue in fx-jira , 我是不可救药的乐观主义者 :-)

最佳答案

anything wrong with the example?

一个响亮的YES - 引用了 Martin 对这个问题的评论(非常快速和清晰 :-):

The problem is in your fxml file.

"fx:controller" attribute takes the class and creates a new instance of it (using the default contructor). The default constructor of your DisposeExample class posts a new Runnable that will load the same fxml file again a create yet another instance of DisposeExample class.

You should either use a different class for your controller or set the controller manually using the setController() call or using a controller factory (setControllerFactory). Otherwise, there is no way for FXMLLoader to know that you wanted to use your particular DisposeExample object.

关于java - 混音 Swing/FX : can't dispose a dialog from fxml controller,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19889901/

24 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com