java - 在按钮单击时添加 JTextFields

Question

我已经从事这个工作有一段时间了，我觉得我已经快到了，

我正在尝试通过单击按钮将 TextField 添加到 JPanel，Jpanel 中可能有也可能没有 JTextField。

目前，新的 JTextField 出现，但仅以线条形式出现，如果已经存在 JTextField，它们将被绘制在它们上面。

我的项目即将结束，非常感谢对此提供的任何帮助。

public class CDPopup extends JPanel implements ActionListener {

private JLabel artist, songName, songLength, songNumber;
private JTextField artistTBox;
private JButton addSong, addAlbum, update;
private DigiProduct p;
private Border space = (Border) BorderFactory.createEmptyBorder(10, 10, 10,10);
private Border line = (Border) BorderFactory.createLineBorder(Color.black);
private Border border = BorderFactory.createCompoundBorder(space, line);

private Font font = new Font("Verdana", Font.PLAIN, 20);
private GridBagConstraints gc = new GridBagConstraints();

private ProdDialog prodDialog;

private JTextField song9, song10, song11, song12, song13, song8, song7, song6, song5, song4, song1, song2, song3,
length9, length10, length11, length12, length13, length8, length7, length6, length5, length4, length1, length2,
length3;

JTextField[] digiProdDetailBx = { song1 = new JTextField(),
        song2 = new JTextField(), song3 = new JTextField(),
        song4 = new JTextField(), song5 = new JTextField(),
        song6 = new JTextField(), song7 = new JTextField(),
        song8 = new JTextField(), song9 = new JTextField(),
        song10 = new JTextField(), song11 = new JTextField(),
        song12 = new JTextField(), song13 = new JTextField()};

JTextField[] digiProdDetailBx2 = { length1 = new JTextField(),
        length2 = new JTextField(), length3 = new JTextField(),
        length4 = new JTextField(), length5 = new JTextField(),
        length6 = new JTextField(), length7 = new JTextField(),
        length8 = new JTextField(), length9 = new JTextField(),
        length10 = new JTextField(), length11 = new JTextField(),
        length12 = new JTextField(), length13 = new JTextField()};

private JLabel[] digiProdDetailLb;

private DigiProductList digiProductList;

private ArrayList<Song> alist = new  ArrayList<Song>();



public CDPopup(DigiProduct p, DigiProductList digiProductList, ProdDialog  prodDialog) {




    this.prodDialog = prodDialog;
    this.digiProductList = digiProductList;
    this.setName("cd");
    this.p = p;
    this.setLayout(new BorderLayout());
    if(p.getAlbum().getSongList().size() >= 15)
    {
        this.setSize(690, 600);
    }
    else if(p.getAlbum().getSongList().size() < 11)
    {
        this.setSize(690, 410);
    }
    else
    {
        this.setSize(690, 490);
    }
    JPanel top = new JPanel(new GridBagLayout());
    this.setBorder(new TitledBorder("CD"));



    addFields( p.getAlbum().getSongList().size(), false);



    JPanel detailsPanel = new JPanel(new BorderLayout());
    detailsPanel.setPreferredSize(new Dimension(240, 80));
    this.add(detailsPanel, BorderLayout.WEST);

    JPanel details = new JPanel(new GridBagLayout());
    details.setBorder(border);
    details.setPreferredSize(new Dimension(150, 130));
    detailsPanel.add(details, BorderLayout.NORTH);

    JPanel spacer = new JPanel();
    spacer.setPreferredSize(new Dimension(200, 100));
    detailsPanel.add(spacer, BorderLayout.SOUTH);


    gc.gridx = 0;
    gc.gridy = 0;
    artist = new JLabel(" Artist");
    details.add(artist, gc);

    gc.gridx = 0;
    gc.gridy = 1;
    artistTBox = new JTextField(10);

    details.add(artistTBox, gc);



    JPanel bottom = new JPanel(new FlowLayout());
    this.add(bottom, BorderLayout.SOUTH);

    addSong = new JButton("Add Song");
    addSong.setPreferredSize(new Dimension(120, 30));
    addSong.addActionListener(this);
    bottom.add(addSong);

    update = new JButton("Update");
    update.setPreferredSize(new Dimension(120, 30));
    update.addActionListener(this);
    bottom.add(update);


    addAlbum = new JButton("Add Album");
    addAlbum.setPreferredSize(new Dimension(120, 30));
    addAlbum.addActionListener(this);
    bottom.add(addAlbum);
    this.setVisible(true);



}



public void addFields(int size, boolean newSong)
{

    JPanel songs = new JPanel(new GridBagLayout());
    songs.setPreferredSize(new Dimension(380, 200));
    songs.setBorder(border);

    songNumber = new JLabel(" No.");
    songName = new JLabel("Song");
    songLength = new JLabel("Length");

    JLabel[] digiProdDetailLb = new JLabel[size];
    if(newSong == true)
    {
        JTextField[] digiProdDetailBx = new JTextField[size];
        JTextField[] digiProdDetailBx2 = new JTextField[size];
    }

    for (int i = 0; i < size; i++) {

        int num = i +1;

        if (i == 0) {
            gc.gridx = 0;
            gc.gridy = 0;
            gc.anchor = GridBagConstraints.WEST;
            songs.add(songNumber, gc);
        }

        gc.gridx = 0;
        gc.gridy = i + 1;
        gc.gridwidth = 1;
        gc.gridheight = 1;
        gc.weighty = 0.0;
        gc.weightx = 2.0;
        gc.anchor = GridBagConstraints.WEST;
        digiProdDetailLb[i] = new JLabel(" " + num);
        digiProdDetailLb[i].setFont(font);
        songs.add(digiProdDetailLb[i], gc);

        if (i == 0) {
            gc.gridx = 1;
            gc.gridy = 0;
            songs.add(songName, gc);
        }
        gc.gridx = 1;
        gc.gridy = i + 1;
        gc.gridwidth = 1;
        gc.gridheight = 1;
        gc.weighty = 0.0;
        gc.weightx = 2.0;
        gc.gridwidth = 2;
        if(newSong == true)
        {
            digiProdDetailBx[i] = new JTextField(100);
        }
        else
        {
        digiProdDetailBx[i] = new JTextField(p.getAlbum().getSongList().get(i).getSong_name());
        }
        digiProdDetailBx[i].setPreferredSize(new Dimension(250, 20));
        songs.add(digiProdDetailBx[i], gc);

        if (i == 0) {
            gc.gridx = 3;
            gc.gridy = 0;
            songs.add(songLength, gc);
        }
        gc.gridx = 3;
        gc.gridy = i + 1;
        gc.gridwidth = 1;
        gc.gridheight = 1;
        gc.weighty = 0.0;
        gc.weightx = 2.0;
        gc.gridwidth = 2;
        if(newSong == true)
        {
            digiProdDetailBx2[i] = new JTextField(100);
        }
        else
        {
        digiProdDetailBx2[i] = new  JTextField(p.getAlbum().getSongList().get(i).getSong_length());
        }
        digiProdDetailBx2[i].setPreferredSize(new Dimension(50, 20));
        songs.add(digiProdDetailBx2[i], gc);

    }
    ;

    this.add(songs, BorderLayout.EAST);


}

public void updateEmployee() {



        for(int i = 0 ; i < p.getAlbum().getSongList().size(); i++)
        {

            Song s = new        Song(p.getProd_id(),p.getAlbum().getSongList().get(i).getProd_id(), 
                    digiProdDetailBx[i].getText(),        digiProdDetailBx2[i].getText());
            alist.add(s);
        }



        CD c = new CD(alist);



        DigiProduct cd = new DigiProduct(p.getProd_id(),
                p.getProd_type(),
                p.getDigi_id(),
                p.getCd_id(),
                p.getArtist_id(),
                p.getAlbumName(),
                p.getCostPrice(),
                p.getSellPrice(),
                p.getCurrent_stock(),
                p.getAge_rating(),
                p.getGenre(),
                p.getPublisher(),
                p.getLength(),
                p.getArtist(),
                c
                );




    digiProductList.updateEmployee(cd);
    JOptionPane.showMessageDialog(null, "Album " + p.getAlbumName()
            + " Updated");

}





public JTextField[] getDigiProdDetailBx() {
    return digiProdDetailBx;
}


public void setDigiProdDetailBx(JTextField[] digiProdDetailBx) {
    this.digiProdDetailBx = digiProdDetailBx;
}


public JTextField[] getDigiProdDetailBx2() {
    return digiProdDetailBx2;
}


public void setDigiProdDetailBx2(JTextField[] digiProdDetailBx2) {
    this.digiProdDetailBx2 = digiProdDetailBx2;
}


public void actionPerformed(ActionEvent e) {

    if(e.getSource().equals(update))
    {

        updateEmployee();
    }
    else if(e.getSource().equals(addSong))
    {
        addFields(2, true);
        this.revalidate();
        this.repaint();
    }
    else if(e.getSource().equals(addAlbum))
    {
        prodDialog.addSongs();
    }

}

}

Answer 1

the text fields don't appear at the sizes I have set them

建议列数大小:

song1 = new JTextField(5)