Question

我正在使用Java进行项目，因为我需要在点击JFrame上的特定按钮后重新加载整个JFrame。怎么做？

Answer 1

尝试

SwingUtilities.updateComponentTreeUI(frame);

如果仍然无效，请在完成上述步骤后尝试

frame.invalidate();
frame.validate();
frame.repaint();

Answer 2

只是使用 frame.setVisible（假）; frame.setVisible（真）; 我用JLabels和图像有这个问题，这解决了它

Answer 3

下面的简短代码可能会有所帮助。

    <yourJFrameName> main = new <yourJFrameName>();    

    main.setVisible(true);
    this.dispose();

哪里...

main.setVisible（true）;

将再次运行JFrame。

this.dispose（）;

将终止正在运行的窗口。

Answer 4

试试这段代码。我也遇到了同样的问题，但有些我是如何解决它的。

public class KitchenUserInterface {

    private JFrame frame;
    private JPanel main_panel, northpanel , southpanel;
    private JLabel label;
    private JButton nextOrder;
    private JList list;

    private static KitchenUserInterface kitchenRunner ;

    public void setList(String[] order){
        kitchenRunner.frame.dispose();
        kitchenRunner.frame.setVisible(false);
        kitchenRunner= new KitchenUserInterface(order);

    }

    public KitchenUserInterface getInstance() {
        if(kitchenRunner == null) {
            synchronized(KitchenUserInterface.class) {
                if(kitchenRunner == null) {
                    kitchenRunner = new KitchenUserInterface();
                }
            }
        }


        return this.kitchenRunner;
    }

    private KitchenUserInterface() {


        frame = new JFrame("Lullaby's Kitchen");
        main_panel = new JPanel();
        main_panel.setLayout(new BorderLayout());
        frame.setContentPane(main_panel);



        northpanel = new JPanel();
        northpanel.setLayout(new FlowLayout());


        label = new JLabel("Kitchen");

        northpanel.add(label);


        main_panel.add(northpanel , BorderLayout.NORTH);


        frame.setSize(500 , 500 );
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    private KitchenUserInterface (String[] order){
        this();
        list = new JList<String>(order);
        main_panel.add(list , BorderLayout.CENTER);

        southpanel = new JPanel();
         southpanel.setLayout(new FlowLayout());

         nextOrder = new JButton("Next Order Set");
         nextOrder.addActionListener(new OrderUpListener(list));
         southpanel.add(nextOrder);
         main_panel.add(southpanel, BorderLayout.SOUTH);



    }

    public static void main(String[] args) {
        KitchenUserInterface dat = kitchenRunner.getInstance();
        try{

        Thread.sleep(1500);
        System.out.println("Ready");
        dat.setList(OrderArray.getInstance().getOrders());
        }
        catch(Exception event) {
            System.out.println("Error sleep");
            System.out.println(event);
        }


        }

}

如何刷新或重新加载JFrame？

4 个答案: