我正在使用 SwingWorker 和
当过程不是太繁重时,它会完美地更新 JProgressBar(例如包含 62 个元素的“Trames”列表)
当进程繁重时,它不会更新 JProgressBar(我用 100k 个元素进行了测试,它最终可以使用 2M+ elems)
在我的 ProgressWorker 类下面
@Override
protected Object doInBackground() throws Exception {
// TODO Auto-generated method stub
// here process i skipped
for (Trame t : trames) {
float progress = (float)FileRW.tramescounter/FileRW.maxtrames;
progress = progress*100;
int p = (int) progress;
setProgress(p);
System.out.println(getProgress()+"+p"+" ---- progress"+p+" ---- double"+progress);
Thread.sleep(25);
FileRW.tramescounter++;
// here process i skipped
}
// here process i skipped
return null;
}
此外,我的控制器类:
ProgressWorker pw = new ProgressWorker();
pw.addPropertyChangeListener(new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent evt) {
String name = evt.getPropertyName();
if (name.equals("progress")) {
int progress = (int) evt.getNewValue();
Vue.bar.setValue(progress);
Vue.bar.repaint();
} else if (name.equals("state")) {
SwingWorker.StateValue state = (SwingWorker.StateValue) evt.getNewValue();
switch (state) {
case DONE:
Vue.lastButton.setEnabled(true);
if (Vue.check.isSelected()) {
if (Desktop.isDesktopSupported()) {
Desktop desktop = Desktop.getDesktop();
try {
desktop.open(new File(Constants.FICHIER_LOG2));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
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