重新加载组件框架

Question

我正在进行时间表预订应用程序，当我运行项目时，它显示组件(总框架)，但是我希望当按钮按下重新加载时，组件应该被释放。(两帧，一帧比一帧低)??

Answer 1

根据您的描述，我认为您需要在单击按钮时在框架中添加拆分窗格，或者您已经在框架中有了拆分窗格，并希望在单击按钮时在其中添加面板。

对于第一个选项，你可以这样做:

    final JFrame frame = new JFrame("Split test");
    frame.setSize(400, 400);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    final JPanel jPanel2 = new JPanel();
    JLabel jLabel = new JLabel("I am added by click on button");
    jPanel2.add(jLabel);
    final JPanel jPanel = new JPanel();
    JButton button = new JButton("Click me to add pane in split");
    jPanel.add(button);
    button.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent arg0) {
            JSplitPane pane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
            pane.add(jPanel);
            pane.add(jPanel2);
            pane.setDividerLocation(frame.getHeight()/2); // set Divider location.
            frame.remove(jPanel);
            frame.add(pane);
            frame.validate();
        }
    });
    frame.add(jPanel);
    frame.setVisible(true);

如果你被困在后面一个，那么试试这个:

    final JFrame frame = new JFrame("Split test");
    frame.setSize(400, 400);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    final JSplitPane pane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
    frame.add(pane);
    pane.setEnabled(false); // stop user from clicking on divider of split pane.
    final JPanel jPanel2 = new JPanel();
    JLabel jLabel = new JLabel("I am added by click on button");
    jPanel2.add(jLabel);
    final JPanel jPanel = new JPanel();
    JButton button = new JButton("Click me to add pane in split");
    jPanel.add(button);
    pane.add(jPanel);
    button.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent arg0) {
            pane.add(jPanel2);
            pane.setDividerLocation(frame.getHeight()/2); // set Divider location.
            pane.setEnabled(true); // let user change divider location.
        }
    });
    frame.setVisible(true);