今天学习了下
eclipse
从入门到精通的
SWT
多线程，但是一直有问题，我感觉现在完全是按照那里面的代码写的怎么还是出错
org.eclipse.swt.SWTException
: Failed to execute runnable (java.lang.StackOverflowError)
at org.eclipse.swt.SWT.error(
SWT.java:2942
)
at org.eclipse.swt.SWT.error(
SWT.java:2865
)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(
Synchronizer.java:126
)
at org.eclipse.swt.widgets.Display.runAsyncMessages(
Display.java:3057
)
at org.eclipse.swt.widgets.Display.readAndDispatch(
Display.java:2716
)
at com.swtprocessmonitor.TaskGUI.open(
TaskGUI.java:77
)
while (!shell.isDisposed()) {
if (!display.readAndDispatch())//77
display.sleep();}
at com.swtprocessmonitor.TaskGUI.main(
TaskGUI.java:87
)
Caused by: java.lang.StackOverflowError
org.eclipse.swt.SWTException
: Failed to execute runnable (java.lang.StackOverflowError)
at org.eclipse.swt.SWT.error(
SWT.java:2942
)
at org.eclipse.swt.SWT.error(
SWT.java:2865
)
at org.eclipse.swt.widgets.Synchronizer.syncExec(
Synchronizer.java:178
)
at org.eclipse.swt.widgets.Display.syncExec(
Display.java:3413
)
at com.swtprocessmonitor.Task.moveProgressBar(
Task.java:68
)
at com.swtprocessmonitor.Task.start(
Task.java:32
)
at com.swtprocessmonitor.TaskGUI$3.run(
TaskGUI.java:59
)
Caused by: java.lang.StackOverflowError
不知道该专门解决了
我的
TaskGUI.java
package com.swtprocessmonitor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class TaskGUI {
final Display display = Display.getDefault();
final Shell shell = new Shell();
private Task task=new Task(this);
private Button Execue_button = new Button(shell, SWT.NONE);
private Button stop_Button = new Button(shell, SWT.NONE);
private ProgressBar progressBar;
private Text taskCountText;
private Text consoletext;
public void open()
{
shell.setSize(500, 375);
shell.setText("SWT Application");
shell.open();
Execue_button.setText("Execue");
Execue_button.setBounds(211, 52, 101, 25);
stop_Button.setText("stop");
stop_Button.setBounds(348, 52, 79, 25);
stop_Button.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
task.stop();
}
});
consoletext = new Text(shell, SWT.V_SCROLL | SWT.MULTI | SWT.BORDER);
//consoletext.setLayoutData();
consoletext.setBounds(93, 141, 277, 156);
Execue_button.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
setButtonState(false);
String str=taskCountText.getText();
final int inttaskCount=Integer.parseInt(str);
System.out.println(inttaskCount+"inttaskCount");
progressBar.setMaximum(inttaskCount-1);
consoletext.insert("back door thread start!");
new Thread() {
public void run() {
task.start(inttaskCount);
}
}.start();
}
});
progressBar = new ProgressBar(shell, SWT.NONE);
progressBar.setBounds(89, 105, 276, 30);
taskCountText = new Text(getShell(), SWT.BORDER);
taskCountText.setBounds(72, 50, 120, 30);
shell.layout();
shell.setLocation(6, -9);
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();}
}
public static void main(String[] args) {
try {
TaskGUI tg=new TaskGUI();
tg.open();
} catch (RuntimeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void setButtonState(boolean bFlag)
{
this.Execue_button.setEnabled(bFlag);
this.stop_Button.setEnabled(!bFlag);
}
public Shell getShell()
{
return shell;
}
public Text getConselText()
{
return this.consoletext;
}
public ProgressBar getProgressBar()
{
return this.getProgressBar();
}
}
我的
Task.java
package com.swtprocessmonitor;
import org.eclipse.swt.widgets.Display;
public class Task {
private TaskGUI tg;
private boolean stopFlag;
Task(TaskGUI tg)
{
this.tg=tg;
}
public void stop()
{
stopFlag=true;
}
public void start(int taskCount)
{
stopFlag=false;
insertConselText("stat!");
for(int i=0;i<taskCount;i++)
{
if(stopFlag)
{
break;
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
insertConselText(i+"");
moveProgressBar(i);
}
insertConselText("finish");
setTaskButtonstate(true);
}
public void setTaskButtonstate(final boolean bFlag)
{
Display.getDefault().syncExec(new Runnable(){
public void run()
{
tg.setButtonState(bFlag);
}
});
}
public void insertConselText(final String str)
{
Display.getDefault().syncExec(new Runnable(){
public void run()
{
tg.getConselText().insert(str);
}
});
}
public void moveProgressBar(final int progress)
{
Display.getDefault().syncExec(new Runnable(){
public void run()
{
tg.getProgressBar().setSelection(progress);
}
});
}
}
哪位大哥能帮忙解决下
谢谢！！