JProgressBar 无法自动更新是什么原因??

[jackwin]

我在Main外定义了JButton JProgressBar 让Swing_mainWindows里其它函数能访问.

public class Swing_mainWindows {
private JButton button;
JProgressBar progressBar = new JProgressBar();
/**
* Launch the application
* @param args
*/
public static void main(String args[]) {

=============================================================================
修改progressBar的百分比
public void setJProgressBar(int a){
progressBar.setValue(a);
}

下面是BUTTON的MouseClicked过程,每完成一个就增加10%,但程序运行时进度条是不会一格一格动的,只会由按了BUTTON开始到结束完成后就到100%了,我还特意用hread.sleep(1000);暂停一下主程序但依然是不动!

button = new JButton("开始数据转换");
button.addMouseListener(new MouseAdapter() {
public void mouseClicked(final MouseEvent arg0) {
try {
FunctionPro com = new FunctionPro();
Collection c2 = a.getselectcheckNew(19);
setJProgressBar(10);

hread.sleep(1000);

Collection c3 = a.getselectcheckNew(20);
setJProgressBar(progressBar.getValue()+10);

Collection c = com.linkCheckTime(c2,c3);
if(c.size() <=0)
{SetActionLable("没有新数据可转换");
setJProgressBar(100);
return;}
setJProgressBar(progressBar.getValue()+10);
// CHECKTIME USERID BADGENUMBER SENSORID
//取指纹记录集合 2008-06-24 08:06:31.000 1249 01006 19

//提取所有 单独 BADGENUMBER生成List
ArrayList st = com.FPBadgen(c);

// BPEID BPECode
//xuserver83221 01006
Collection c4 = b.getMainserverSSID(com.FPBadgenStr(st));
setJProgressBar(progressBar.getValue()+10);
Thread.sleep(1000);
// BPEID KH
//xuserver1174229 40561583
Collection c5 = b.getHRSendCheckInRs();
setJProgressBar(progressBar.getValue()+10);
Thread.sleep(1000);
//合成(i+"",KH,it.getBPEID(),"","","","","");
Collection c45 = com.CountBpHrc(c4,c5);

//查找丢失的ＫＨ到C45

Collection c46 = b.getNotFoundKHList(com.FPBadgenStr(com.getFoundHkList(c45)));

Collection c47 = com.HRDocatLinkKh(c45, c46);

Collection creatPass = com.HRDocatLink(c,c47);
setJProgressBar(progressBar.getValue()+10);
Thread.sleep(1000);
if(com.InsertSource(a,b,creatPass).endsWith(""))
SetActionLable("完成转换");
setJProgressBar(100);
} catch (InterruptedException e) {
// TODO 自动生成 catch 块
e.printStackTrace();
}
}
});

[jackwin]

weilovewml 说了些什么话了???

[hardtoregistration]

进度条得配合线程使用，你的代码问题是，当你点击button的时候，显示进度条的那段代码都在button的监听事件里面，只有当button的监听事件执行完之后，才会回到主线程刷新页面（这句话描述可能有点问题）,所以你看到的是一下就到100%了。
你应该把显示button监听里面的代码放到一个线程里面，监听时间里面启动线程就可以了

-------------------------------------------------------------
Quietly through .....

[hardtoregistration]

/*
 * Created on July 10 2008
 * 
 * Copyright by 布谷鸟
 */
package swt;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

/**
 * 
 * @author cuckoo
 * 
 */
public class RefreshTry {

	public static void main(String args[]) {
		new RefreshTry().createShell();
	}

	private void createShell() {
		_shell = new Shell(_display, SWT.MIN);
		_shell.setSize(300, 200);
		_shell.setText("Refresh Contents");
		createContents();
		_shell.open();
		while (!_shell.isDisposed()) {
			if (!_display.readAndDispatch()) {
				_display.sleep();
			}
		}
		_display.dispose();
	}

	private void createContents() {
		final Button button = new Button(_shell, SWT.PUSH);
		button.setBounds(2, 2, 100, 20);
		button.setText("Click me");
		displayLabel = new Label(_shell, SWT.SHADOW_IN);
		displayLabel.setText("Default ....");
		displayLabel.setBounds(10, 50, 40, 20);

		_methodLabel = new Label(_shell, SWT.SHADOW_ETCHED_OUT);
		_methodLabel.setBackground(new Color(_display, 0, 0, 0));
		_methodLabel.setForeground(new Color(_display, 140, 140, 140));
		_methodLabel.setBounds(120, 50, 100, 15);

		button.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				// TODO Auto-generated method stub
				displayLabel.setBounds(10, 50, 40, 40);
				displayLabel.setText("");
				displayLabel
						.setBackgroundImage(new Image(_display, "89_m.bmp"));
				// sleep one minutes
				processThread();
			}
		});
	}

	private void processThread() {
		Thread thread = new Thread() {
			public void run() {
				// TODO Auto-generated method stub
				_display.asyncExec(new Runnable() {
					public void run() {
						// TODO Auto-generated method stub
						int i = 0;
						while (i <= 30) {
							if (i != 30) {
								_methodLabel.setText("当前值为: " + i);
							} else {
								if (i == 30) {
									_methodLabel
											.setText("方法调用结束 ");
									Image image = new Image(_display,
											"89_m.bmp");
									displayLabel.setBackgroundImage(image);
									displayLabel.setSize(
											image.getBounds().width, image
													.getBounds().height);
								}
							}
							try {
								Thread.sleep(100);
							} catch (InterruptedException e) {
								// TODO Auto-generated catch block
								e.printStackTrace();
							}
							i ++ ;
						}
					}
				});

			}
		};
		thread.start();
	}

	private Shell _shell = null;
	private Label _methodLabel = null;
	private Label displayLabel = null;
	private Display _display = Display.getDefault();
}

//这儿有段代码，不过是swt，他们理论上都是差不多的，希望对你有帮助

-------------------------------------------------------------
Quietly through .....

[jackwin]

大概你说的我明白了,我再找段时间消化一下XX