使用EventHandler更改java图形

Question

每当用户按下箭头DOWN，我的程序就会绘制不同的图形。我使用了Enum来实现这一点，我将逐一查看，并在按下向下箭头时显示所选类型的图形

在这一刻，我有三种类型的图形，每当我把它们全部返回到第一种时，我的程序就会抛出java.lang.IllegalStateException: Not on FX application thread; currentThread = AWT-EventQueue-0

public class Main extends javax.swing.JFrame {

    private static void initAndShowGUI() {
        JFrame frame = new JFrame("JavaFX in Swing");
        frame.setLayout(new BorderLayout());

        Charts charts = new Charts();

        frame.setContentPane(charts);

        frame.setSize(1024, 720); //Size of dispalayed window
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }

    public static void main(String args[]) {

        java.awt.EventQueue.invokeLater(new Runnable() {
            @Override
            //java.awt.EventQueue.invokeLater
            public void run() {
                initAndShowGUI();
            }
        });
    }             
}

public class Charts extends JPanel{
    private JFXPanel jfxPanel = new JFXPanel();
    private i = 0;

    public Charts(){
        //show first graph so window won't be empty
        drawLineChart(jfxPanel);

        registerKeyboardAction((ActionEvent e) -> {

            switch(chartParams[i].toString()){
                case "BarChart":
                    drawBarChart(jfxPanel);
                    i++;
                    break;

                case "PieChart":
                    drawPieChart(jfxPanel);
                    i++;
                    break;

                case "LineChart":
                    i = 0;
                    drawLineChart(jfxPanel);
                    break;

                default:
                    i = 0;
                    System.out.println("Wrong Parameters!");
            }
            System.out.println(i+ ", ");
        }, KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0), WHEN_IN_FOCUSED_WINDOW);

        add(jfxPanel,BorderLayout.CENTER);
    }
}

所有draw...方法都可以为空

我犯了一个错误

我犯了这个错误

Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: Not on FX application thread; currentThread = AWT-EventQueue-0
    at com.sun.javafx.tk.Toolkit.checkFxUserThread(Toolkit.java:279)
    at com.sun.javafx.tk.quantum.QuantumToolkit.checkFxUserThread(QuantumToolkit.java:423)
    at javafx.scene.Parent$2.onProposedChange(Parent.java:367)
    at com.sun.javafx.collections.VetoableListDecorator.remove(VetoableListDecorator.java:329)
    at com.sun.javafx.collections.VetoableListDecorator.remove(VetoableListDecorator.java:221)
    at javafx.scene.Parent$1.onChanged(Parent.java:246)
    at com.sun.javafx.collections.TrackableObservableList.lambda$new$29(TrackableObservableList.java:45)
    at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
    at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
    at javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
    at javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:482)
    at javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
    at javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
    at javafx.collections.ModifiableObservableListBase.addAll(ModifiableObservableListBase.java:102)
    at com.sun.javafx.collections.VetoableListDecorator.addAll(VetoableListDecorator.java:237)
    at com.sun.javafx.collections.VetoableListDecorator.addAll(VetoableListDecorator.java:103)
    at javafx.scene.chart.XYChart.<init>(XYChart.java:444)
    at javafx.scene.chart.BarChart.<init>(BarChart.java:154)
    at javafx.scene.chart.BarChart.<init>(BarChart.java:142)
    at cz.test.hibernate.Charts.drawBarChart(Charts.java:210)
    at cz.test.hibernate.Charts.lambda$new$0(Charts.java:73)
    at javax.swing.JComponent$ActionStandin.actionPerformed(JComponent.java:3425)
    at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1663)
    at javax.swing.JComponent.processKeyBinding(JComponent.java:2882)
    at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:307)
    at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:250)
    at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2974)
    at javax.swing.JComponent.processKeyBindings(JComponent.java:2966)
    at javax.swing.JComponent.processKeyEvent(JComponent.java:2845)
    at javafx.embed.swing.JFXPanel.processKeyEvent(JFXPanel.java:497)
    at java.awt.Component.processEvent(Component.java:6310)
    at java.awt.Container.processEvent(Container.java:2237)
    at java.awt.Component.dispatchEventImpl(Component.java:4889)
    at java.awt.Container.dispatchEventImpl(Container.java:2295)
    at java.awt.Component.dispatchEvent(Component.java:4711)
    at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)
    at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:835)
    at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1103)
    at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:974)
    at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:800)
    at java.awt.Component.dispatchEventImpl(Component.java:4760)
    at java.awt.Container.dispatchEventImpl(Container.java:2295)
    at java.awt.Window.dispatchEventImpl(Window.java:2746)
    at java.awt.Component.dispatchEvent(Component.java:4711)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
    at java.awt.EventQueue$4.run(EventQueue.java:733)
    at java.awt.EventQueue$4.run(EventQueue.java:731)
    at java.security.AccessController.doPrivileged(Native Method)1, 

    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

当我这样使用Platform.runLater()

Platform.runLater(new Runnable() {
            @Override
            //java.awt.EventQueue.invokeLater
            public void run() {
                initAndShowGUI();
            }
        });

事情就是这样：

Exception in thread "main" java.lang.IllegalStateException: Toolkit not initialized
    at com.sun.javafx.application.PlatformImpl.runLater(PlatformImpl.java:273)
    at com.sun.javafx.application.PlatformImpl.runLater(PlatformImpl.java:268)
    at javafx.application.Platform.runLater(Platform.java:83)
    at cz.test.hibernate.Main.main(Main.java:109)

我该如何解决这个问题？ 这个问题可以是JavaFX和Swing的组合吗

Answer 1

好吧，有两个主要错误，然后是一个。第一个是我写的《指挥》节目，所以我要先回答

这可以通过注释中提到的Platform.runLater()@john16384来解决。但这应该用在class Charts

case "BarChart":
    Platform.runLater(new Runnable() {
        drawBarChart(jfxPanel);
    });
    i++;
break;

这样它就可以用FX线程来修复错误。但下一个错误可能会出现

例如，如果你想画BarChart，你必须初始化CategoryAxis和NumberAxis。在这个方法中，不像我之前声明和初始化它们时那样。 因为如果你这样做的话，这些Axis会多扩展50%，这意味着你的图会小50%