java 进度条中止_取消进度条的一个示例

爱被打了一巴掌 2023-10-05 21:26 11阅读 0赞

执行下看看结果

成功了

第二次点击“Start ProgressBar”按钮，进度条又可以正常工作了

O了

把最后的代码粘一份：

package chapter4;

import org.jvnet.substance.skin.CremeCoffeeSkin;

import org.jvnet.substance.skin.SubstanceAutumnLookAndFeel;

import org.jvnet.substance.skin.SubstanceSaharaLookAndFeel;

import javax.swing.\*;

import javax.swing.plaf.metal.MetalProgressBarUI;

import java.awt.\*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.concurrent.TimeUnit;

/\*\*

\* Created by MyWorld on 2016/3/24.

\*/

public class SwingJProgressBarDemo \{

private static Thread thread = null;

public static void main(String\[\] args) throws UnsupportedLookAndFeelException \{

UIManager.setLookAndFeel(new SubstanceAutumnLookAndFeel());

SubstanceSaharaLookAndFeel.setSkin(new CremeCoffeeSkin());

SwingUtilities.invokeLater(new Runnable() \{

@Override

public void run() \{

new SwingJProgressBarDemo().initGUI();

\});

\} private void initGUI() \{

final JFrame frame = new JFrame("JProgressBarDemo");

frame.setSize(400, 200);

frame.setLocationRelativeTo(null);

frame.setDefaultCloseOperation(JFrame.EXIT\_ON\_CLOSE);

frame.setLayout(new FlowLayout());

final JProgressBar progressBar = new JProgressBar();

progressBar.setOrientation(JProgressBar.HORIZONTAL);

progressBar.setSize(200, 100);

progressBar.setMinimum(0);

progressBar.setMaximum(100);

progressBar.setBorderPainted(true);

progressBar.setUI(new MetalProgressBarUI());

progressBar.setBackground(Color.BLUE);

progressBar.setForeground(Color.GREEN);

progressBar.setStringPainted(true);

frame.add(progressBar);

JButton btnStart = new JButton("Start ProgressBar");

final Runnable runnable = new Runnable() \{

@Override

public void run() \{

try \{

for (int i = 0; i <= 10; i++) \{

final int finalI = i;

SwingUtilities.invokeLater(new Runnable() \{

@Override

public void run() \{

progressBar.setValue(finalI \* 10);

\});

TimeUnit.SECONDS.sleep(1);

\} catch (InterruptedException e1) \{

e1.printStackTrace();

\};

ActionListener listener = new ActionListener() \{

@Override

public void actionPerformed(ActionEvent e) \{

thread = new Thread(runnable);

thread.start();

\}; btnStart.addActionListener(listener);

frame.add(btnStart); JButton btnCancel = new JButton("Cancel the task");

btnCancel.addActionListener(new ActionListener() \{

@Override

public void actionPerformed(ActionEvent e) \{

if (thread == null || !thread.isAlive()) \{

return;

thread.interrupt();

SwingUtilities.invokeLater(new Runnable() \{

@Override

public void run() \{

progressBar.setValue(0);

\});

frame.add(btnCancel);

frame.setVisible(true);

java 进度条中止_取消进度条的一个示例

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