使用进度条（如Eclipse）制作启动屏幕

Question

我的主类从文件加载配置，然后显示一个框架。我想制作一个带有进度条（如Eclipse）的启动画面，以便在加载文件时进度会增加，并且在加载文件后启动画面会消失。然后我的主机被加载。

MainClass代码：

public static void main(String[] args) {
  ApplicationContext context = new ClassPathXmlApplicationContext(
    "classpath:/META-INF/spring/applicationContext.xml");
  // splash with progress load till this file is loaded
  UserDao userDao = context.getBean(UserDao.class);
  isRegistered = userDao.isRegistered();
  System.out.println("registered: " + isRegistered);
  if (isRegistered) {
    // progress finish and hide splash
    log.debug("user is registered"); // show frame1
  } else {
    // progress finish and hide splash
    log.debug("user is not registered"); // show frame2
  }
}

我在Swing方面没有太多经验，所以请提出建议。

更新： 我发现了以下示例，但没有什么问题：

• 当计数器达到指定的数字时，它应停止在（300）位置，直到不停止计时器并隐藏启动画面而永远计数。

• 我想将计数器绑定到文件加载，因此，在加载文件时，将加载进度，直到加载文件，然后进度完成，并且初始屏幕消失。

  @SuppressWarnings("serial")
  

  @Component
  public class SplashScreen extends JWindow {
  

  static boolean isRegistered;
  
  static Log log = LogFactory.getLog(SplashScreen.class);
  
  private static JProgressBar progressBar = new JProgressBar();
  private static SplashScreen execute;
  private static int count;
  private static Timer timer1;
  
  public SplashScreen() {
  
      Container container = getContentPane();
      container.setLayout(null);
  
      JPanel panel = new JPanel();
      panel.setBorder(new javax.swing.border.EtchedBorder());
      panel.setBackground(new Color(255, 255, 255));
      panel.setBounds(10, 10, 348, 150);
      panel.setLayout(null);
      container.add(panel);
  
      JLabel label = new JLabel("Hello World!");
      label.setFont(new Font("Verdana", Font.BOLD, 14));
      label.setBounds(85, 25, 280, 30);
      panel.add(label);
  
      progressBar.setMaximum(50);
      progressBar.setBounds(55, 180, 250, 15);
      container.add(progressBar);
      loadProgressBar();
      setSize(370, 215);
      setLocationRelativeTo(null);
      setVisible(true);
  }
  
  public void loadProgressBar() {
      ActionListener al = new ActionListener() {
          public void actionPerformed(java.awt.event.ActionEvent evt) {
              count++;
              progressBar.setValue(count);
              if (count == 300) {
                  timer1.stop();
                  execute.setVisible(false);
                  return;
              }
          }
      };
      timer1 = new Timer(50, al);
      timer1.start();
  }
  
  public static void main(String[] args) {
  
      execute = new SplashScreen();
  
      ApplicationContext context = new ClassPathXmlApplicationContext(
              "classpath:/META-INF/spring/applicationContext.xml");
  
      UserDao userDao = context.getBean(UserDao.class);
  
      isRegistered = userDao.isRegistered();
  
      if (isRegistered) {
           // show frame 1
      } else {
                                                  // show frame 2
  
      }
  
  }
  

  }

Answer 1

当计数器达到指定的数字时，它应停止在（300）位置，直到不停止计时器并隐藏启动画面时，它一直保持计数。

下面的代码似乎很好用（存在致命缺陷，计数器可能花费比文件加载更长的时间，反之亦然）：

import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.HeadlessException;
import java.awt.event.ActionListener;
import javax.swing.*;

public class SplashScreen extends JWindow {

    static boolean isRegistered;
    private static JProgressBar progressBar = new JProgressBar();
    private static SplashScreen execute;
    private static int count;
    private static Timer timer1;

    public SplashScreen() {

        Container container = getContentPane();
        container.setLayout(null);

        JPanel panel = new JPanel();
        panel.setBorder(new javax.swing.border.EtchedBorder());
        panel.setBackground(new Color(255, 255, 255));
        panel.setBounds(10, 10, 348, 150);
        panel.setLayout(null);
        container.add(panel);

        JLabel label = new JLabel("Hello World!");
        label.setFont(new Font("Verdana", Font.BOLD, 14));
        label.setBounds(85, 25, 280, 30);
        panel.add(label);

        progressBar.setMaximum(50);
        progressBar.setBounds(55, 180, 250, 15);
        container.add(progressBar);
        loadProgressBar();
        setSize(370, 215);
        setLocationRelativeTo(null);
        setVisible(true);
    }

    private void loadProgressBar() {
        ActionListener al = new ActionListener() {

            public void actionPerformed(java.awt.event.ActionEvent evt) {
                count++;

                progressBar.setValue(count);

                System.out.println(count);

                if (count == 300) {

                    createFrame();

                    execute.setVisible(false);//swapped this around with timer1.stop()

                    timer1.stop();
                }

            }

            private void createFrame() throws HeadlessException {
                JFrame frame = new JFrame();
                frame.setSize(500, 500);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setVisible(true);
            }
        };
        timer1 = new Timer(50, al);
        timer1.start();
    }

    public static void main(String[] args) {
        execute = new SplashScreen();
    }
};

我想将计数器绑定到文件加载，因此，在加载文件时，将加载进度，直到加载文件，然后进度完成，并且初始屏幕消失。

您应该查看一下，ProgressMonitor然后ProgressMonitorInputStream使用，Task然后检查何时完全读取了文件并结束SplashScreen。看到这里一些很好的教程和解释