[英]Make splash screen with progress bar like Eclipse
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Eclipse之类的进度条的初始屏幕,以便在加载文件时进度会增加,并且在加载文件后初始画面会消失。 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时,它一直保持计数。
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 } } }
Java为此具有一个内置的SplashScreen
类。 有关于如何使用它的教程在这里 。
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。
您应该使用Task
查看一下ProgressMonitor
和ProgressMonitorInputStream
然后可以检查何时完全读取文件并结束SplashScreen
。 看到这里一些很好的教程和解释
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