后退/主页按钮

我以前尝试过这个并且失败了。 如何将JButton添加到JFrame，以将其返回到先前打开的JFrame或“Home”Frame。

在我的应用程序中，我有4个JFrame，主要一个和3个按钮可访问。

我的完整代码（安静长，对不起）

package me.jamplifier; import java.awt.BorderLayout; import java.awt.Color; import java.awt.EventQueue; import java.awt.FlowLayout; import java.awt.Font; import java.awt.Image; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.image.BufferedImage; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import javax.imageio.ImageIO; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JTextField; import javax.swing.ScrollPaneConstants; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.text.DefaultCaret; public class Launcher extends JFrame { // Main Class Area (Default/Main Windows) public Launcher(){ // Main Window JFrame frame = new JFrame("HC Navigator"); frame.setSize(250, 200); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); // Text Labels JLabel label = new JLabel("Beta 1.5 "); JLabel label1 = new JLabel("Welcome to HurricaneCraft"); JPanel panel = new JPanel(); frame.add(panel); panel.add(label); panel.add(label1); panel.setBackground(Color.CYAN); Font font = new Font("Verdana", Font.BOLD, 12); label1.setFont(font); label1.setForeground(Color.RED); label.setFont(font); label.setForeground(Color.GRAY); // Buttons JButton site = new JButton("Site"); site.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://www.hurricanecraft.com"); } }); JButton forums = new JButton("Forums"); forums.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://www.hurricanecraft.com/forums/"); } }); JButton apps = new JButton("Member Apps"); apps.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://hurricanecraft.freeforums.org/member-registration-f29.html"); } }); JButton community = new JButton("Community"); community.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { createFrame2(); } }); JButton admin = new JButton("Admin Area"); admin.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { createFrame(); } }); JButton update = new JButton("Update Log"); update.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { createFrame1(); } }); panel.add(site); panel.add(forums); panel.add(community); panel.add(apps); panel.add(admin); panel.add(update); } // Web Browser/Link Opening Code public static void openWebPage(String url){ try { java.awt.Desktop.getDesktop().browse(java.net.URI.create(url)); } catch (java.io.IOException e) { System.out.println(e.getMessage()); } } // Admin Area Panel public static void createFrame() { JFrame frame = new JFrame("Admin Area"); frame.setVisible(true); frame.setSize(250, 200); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JLabel label = new JLabel("Beta 1.5 "); JLabel label1 = new JLabel("Welcome to the Admin Panel"); JPanel panel = new JPanel(); frame.add(panel); panel.add(label); panel.add(label1); JButton host = new JButton("MCServer Host"); host.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://panel.fadehost.com/index"); } }); JButton console = new JButton("MCServer Console"); console.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://panel.fadehost.com/index.php?r=server/log&id=1983"); } }); JButton tfhost = new JButton("TF2Server Host"); host.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://tcadmin.darkstarllc.com"); } }); JButton staffforum = new JButton("Staff Forums"); staffforum.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://hurricanecraft.freeforums.org/staff-area-f39.html"); } }); panel.add(host); panel.add(console); panel.add(tfhost); panel.add(staffforum); } // Update Logs Panel public static void createFrame1() { JFrame frame = new JFrame("Update Logs"); frame.setVisible(true); frame.setSize(400, 400); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JLabel label = new JLabel(" Change Log: "); JLabel label1 = new JLabel("- Beta 1.1: First Release"); JLabel label2 = new JLabel("- Beta 1.2: Added ADMIN Panel & Change log "); JLabel label3 = new JLabel("- Beta 1.3: Added Staff Forum & Seperated Console/Host"); JLabel label4 = new JLabel("- Beta 1.4: Added Colours & Community Tab + Online Status's"); JLabel label5 = new JLabel("- Beta 1.4: Added Colours & Community Tab + Online Status's"); JLabel label6 = new JLabel("- Beta 1.5: Added New Site Redirects & TF2 Server IP/PANEL"); JPanel panel = new JPanel(); frame.add(panel); panel.add(label); panel.add(label1); panel.add(label2); panel.add(label3); panel.add(label4); panel.add(label5); panel.add(label6); } // Community Page public static void createFrame2() { JFrame frame = new JFrame("Community Area"); frame.setVisible(true); frame.setSize(400, 300); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Labels Frames Panels ECT JLabel label = new JLabel("Hurricane Craft Servers: "); JLabel minecraft = new JLabel("- Minecraft: IP Mc.hurricanecraft.com"); JLabel online = new JLabel("[ONLINE]"); JLabel tf2 = new JLabel("- Teamspeak: IP tf.hurricanecraft.com:27015"); JLabel online1 = new JLabel("[ONLINE]"); JLabel teamspeak = new JLabel("- Teamfortress: IP ts.hurricanecraft.com:5326"); JLabel online2 = new JLabel("[ONLINE]"); JLabel site = new JLabel("- Site: http://www.hurricanegaming.webs.com"); JLabel online3 = new JLabel("[ONLINE]"); JPanel panel = new JPanel(); // Buttons JButton votepmc = new JButton("Vote On PMC"); votepmc.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://www.planetminecraft.com/server/hurricane-craft-247-survival- creative-pvp-games/vote/"); } }); JButton votemc = new JButton("Vote On MCServers"); votemc.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://minecraftservers.org/vote/97507"); } }); JButton votetopg = new JButton("Vote On Topg"); votetopg.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { openWebPage("http://topg.org/Minecraft/in-371684"); } }); // Adding buttons/labels frame.add(panel); panel.add(label); panel.add(minecraft); panel.add(online); panel.add(tf2); panel.add(online1); panel.add(teamspeak); panel.add(online2); panel.add(site);; panel.add(online3); panel.add(votepmc); panel.add(votemc); panel.add(votetopg); // Font & Colours Font font = new Font("Verdana", Font.BOLD, 12); label.setFont(font); label.setForeground(Color.BLUE); Font green = new Font("Verdana", Font.BOLD, 12); online.setFont(green); online.setForeground(Color.GREEN); online1.setFont(green); online1.setForeground(Color.GREEN); online2.setFont(green); online2.setForeground(Color.GREEN); online3.setFont(green); online3.setForeground(Color.GREEN); } // Main String Args Declaration public static void main(String[] args){ new Launcher(); } } 

Answer 1

如何使用一个布局， CardLayout和四个JPanel与内容一起使用。 它有三个很好的function：它将它作为卡片的布局组件：

1. CardLayout.first(Caontainer) ：翻转到容器的第一张卡片。
2. CardLayout.next(panel) ：翻转到指定容器的下一张卡片 。 如果当前可见的卡是最后一张，则此方法将翻转到布局中的第一张卡。
3. CardLayout.previous(paenl) ：翻转到指定容器的上一张卡片。 如果当前可见的卡是第一张，则此方法将翻转到布局中的最后一张卡。

这是一个工作示例：

 class CardLayoutDemo1 extends JFrame { private JPanel jPanel1; private JButton navHomeButt; private JButton navNextButt; private JButton navPreviousButt; private JPanel panelContainer; Random random = new Random(); public CardLayoutDemo1() { initComponents(); panelContainer.add(createSamplePanel("Home Panel "), ""+0); for(int i=1; i < 10; i++) { panelContainer.add(createSamplePanel("Panel "+i), ""+i); } } private void initComponents() { jPanel1 = new JPanel(); navPreviousButt = new JButton(); navNextButt = new JButton(); navHomeButt = new JButton(); panelContainer = new JPanel(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jPanel1.setBackground(Color.WHITE); navPreviousButt.setText("Previous"); navPreviousButt.setPreferredSize(new Dimension(90, 23)); jPanel1.add(navPreviousButt); navNextButt.setText("next"); navNextButt.setPreferredSize(new Dimension(90, 23)); jPanel1.add(navNextButt); navHomeButt.setText("Back to Home"); jPanel1.add(navHomeButt); panelContainer.setPreferredSize(new Dimension(400, 300)); panelContainer.setLayout(new CardLayout()); // setting the card layout getContentPane().add(jPanel1, java.awt.BorderLayout.PAGE_END); getContentPane().add(panelContainer, BorderLayout.CENTER); navNextButt.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent evt) { CardLayout cardLayout = (CardLayout) panelContainer.getLayout(); cardLayout.next(panelContainer); // using cardLayout next() to go to next panel } }); navHomeButt.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent evt) { CardLayout cardLayout = (CardLayout) panelContainer.getLayout(); cardLayout.first(panelContainer); // suing first to get to the home panel } }); navPreviousButt.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent evt) { CardLayout cardLayout = (CardLayout) panelContainer.getLayout(); cardLayout.previous(panelContainer); // using previous to get to previous(left)panel } }); pack(); } public JPanel createSamplePanel(String panelTitle) { JPanel samplePanel = new JPanel(); samplePanel.add(new JLabel(panelTitle)); samplePanel.setBackground(new Color(random.nextInt(255), random.nextInt(255), random.nextInt(255))); return samplePanel; } public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new CardLayoutDemo1().setVisible(true); } }); } }