Java 如何使用Swing计时器延迟加载进度条
我需要找到一种方法来使用带有进度条的Swing计时器。我尝试使用Thread.sleep,但当我使用它时,应用程序崩溃了。有没有办法用摆动计时器代替睡眠Java 如何使用Swing计时器延迟加载进度条,java,swing,timer,progress-bar,sleep,Java,Swing,Timer,Progress Bar,Sleep,我需要找到一种方法来使用带有进度条的Swing计时器。我尝试使用Thread.sleep,但当我使用它时,应用程序崩溃了。有没有办法用摆动计时器代替睡眠 public void piiEros(int dist) { Pii pii = new Pii(); pii.setVisible(true); for(int pc = 0;100 > pc; pc++) { try { Thread.sleep(dist/10
public void piiEros(int dist)
{
Pii pii = new Pii();
pii.setVisible(true);
for(int pc = 0;100 > pc; pc++)
{
try {
Thread.sleep(dist/100);
} catch (InterruptedException ex) {
Logger.getLogger(Trav.class.getName()).log(Level.SEVERE, null, ex);
}
pii.pg.setValue(pc);
}
pii.dispose();
o.Eros();
}
注:Pii是一个带有进度条的类。Dist是它加载的速度。Trav是该方法所在的类。Pc代表%,完成多少显示在栏上。o、 Eros将打开另一个GUI。您可以通过以下方式更改piiEros方法:
public void piiEros(int dist)
{
final Pii pii = new Pii();
pii.setVisible(true);
javax.swing.Timer timer = new javax.swing.Timer(dist/100, new ActionListener()
{
public void actionPerformed(ActionEvent evt)
{
pii.pg.setValue(pg.getValue()++);
if ( pii.pg.getValue() > 100 )
{
timer.stop();
pii.dispose();
o.Eros();
}
}
});
timer.setInitialDelay(0);
timer.setRepeats(true);
timer.start();
}
您可以通过以下方式更改piiEros方法:
public void piiEros(int dist)
{
final Pii pii = new Pii();
pii.setVisible(true);
javax.swing.Timer timer = new javax.swing.Timer(dist/100, new ActionListener()
{
public void actionPerformed(ActionEvent evt)
{
pii.pg.setValue(pg.getValue()++);
if ( pii.pg.getValue() > 100 )
{
timer.stop();
pii.dispose();
o.Eros();
}
}
});
timer.setInitialDelay(0);
timer.setRepeats(true);
timer.start();
}
从长远来看,使用SwingWorker可能更容易。它提供了许多有用的方法,用于从事件调度线程的上下文更新UI,同时允许在后台继续执行
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.SwingWorker;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestSwingWorker02 {
public static void main(String[] args) {
new TestSwingWorker02();
}
public TestSwingWorker02() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException ex) {
} catch (InstantiationException ex) {
} catch (IllegalAccessException ex) {
} catch (UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new GridBagLayout());
JProgressBar pb = new JProgressBar();
add(pb);
new ProgressWorker(pb, 40).execute();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
}
public class ProgressWorker extends SwingWorker<Void, Integer> {
private int delay;
private JProgressBar pb;
public ProgressWorker(JProgressBar progressBar, int delay) {
this.pb = progressBar;
this.delay = delay;
}
@Override
protected void process(List<Integer> chunks) {
// Back in the EDT...
pb.setValue(chunks.get(chunks.size() - 1)); // only care about the last one...
}
@Override
protected Void doInBackground() throws Exception {
for (int index = 0; index < 100; index++) {
publish(index);
Thread.sleep(delay);
}
return null;
}
@Override
protected void done() {
// Back in the EDT...
//pii.dispose();
//o.Eros();
}
}
}
从长远来看,使用SwingWorker可能更容易。它提供了许多有用的方法,用于从事件调度线程的上下文更新UI,同时允许在后台继续执行
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.SwingWorker;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestSwingWorker02 {
public static void main(String[] args) {
new TestSwingWorker02();
}
public TestSwingWorker02() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException ex) {
} catch (InstantiationException ex) {
} catch (IllegalAccessException ex) {
} catch (UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new GridBagLayout());
JProgressBar pb = new JProgressBar();
add(pb);
new ProgressWorker(pb, 40).execute();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
}
public class ProgressWorker extends SwingWorker<Void, Integer> {
private int delay;
private JProgressBar pb;
public ProgressWorker(JProgressBar progressBar, int delay) {
this.pb = progressBar;
this.delay = delay;
}
@Override
protected void process(List<Integer> chunks) {
// Back in the EDT...
pb.setValue(chunks.get(chunks.size() - 1)); // only care about the last one...
}
@Override
protected Void doInBackground() throws Exception {
for (int index = 0; index < 100; index++) {
publish(index);
Thread.sleep(delay);
}
return null;
}
@Override
protected void done() {
// Back in the EDT...
//pii.dispose();
//o.Eros();
}
}
}
很抱歉,代码错误,空格会自动删除。编辑:Eng Fouad修复了缩进,谢谢!这里有一个更可读的代码:不要在EDT上睡觉!顺便说一句,当谈到进度条时,使用SwingWorker。可能最好使用SwingWorker。因此,请参见代码中的抱歉,空格只是删除了它们自己。编辑:Eng Fouad修复了缩进,谢谢!这里有一个更可读的代码:不要在EDT上睡觉!顺便说一句,当涉及到进度条时,使用SwingWorker。可能最好使用SwingWorker。因此无需调用setDelay,您已经在构造函数中建立了;是的,我喜欢肯定地说;IDE不喜欢在方法中调用javax.swing.Timer,我总是添加我以前想要创建的对象的名称,所以现在看起来是这样的:Timer Timer=new Timerdist/100,new actionlistener无法理解您的意思..您的IDE是不是在抱怨它看到javax.swing.Timer?不需要调用setDelay,您已经在构造函数中建立了;是的,我喜欢肯定地说;IDE不喜欢在方法中调用javax.swing.Timer,我总是添加我之前想要创建的对象的名称,所以现在看起来是这样的:Timer Timer=new Timerdist/100,新ActionListener无法理解您的观点..您的意思是您的IDE在看到javax.swing.Timer时会抱怨吗?+1表示现代简洁的答案。但你们不认为对于这样一个小任务,SwingWorker是一个相当大的任务。就个人而言,我觉得它更干净,更容易理解,但我明白了,我很简单..程序员自己的品味+1为现代而简洁的答案。但你们不认为对于这样一个小任务,SwingWorker是一个相当大的任务。就个人而言,我觉得它更干净,更容易理解,但我明白了,我很简单..程序员自己的品味。。;