Question

我一路搜索但无法找到解决方案。我想更改进度条中的默认java图标，正如我使用JProgressBar。

这是我的小片段

public class SwingWorkerProgressMonitor implements PropertyChangeListener {

private static final int PROGRESS_BAR_WIDTH = 200;
private ProgressMonitor progressMonitor;
private final SwingWorker<?, ?> task;
private SwingWorker<Void, Void> backingTask;
private String message;
private final JProgressBar progressBar = new JProgressBar();
int progress = 0;
private final String title;

/*
 * Progress monitor that takes a swing worker and shows its progress
 */
public SwingWorkerProgressMonitor(SwingWorker<?, ?> sw, String title) {

this.task = sw;
this.title = title;

}

/**
 * This Fu2nction Invoked when task's progress property changes.
 */
@Override
public void propertyChange(PropertyChangeEvent evt) {
if (evt.getPropertyName().equals("progress")) {
    int progress = (Integer) evt.getNewValue();
    updateProgress(progress);
}

}

private void updateProgress(int progress) {
progressMonitor.setProgress(progress);
message = String.format(PlasaApplication.getTranslator().getString(PlasaLanguageKey.PROGRESS_LODING_DATA)
    + "(%d%%)", progress);
progressMonitor.setNote(message);
if (progressMonitor.isCanceled() || task.isDone()) {
    Toolkit.getDefaultToolkit().beep();
    if (progressMonitor.isCanceled()) {
    task.cancel(true);
    }
}
}

/**
 * This function start the progress When click the save button on
 * 
 * 
 * @param component
 */
public void start(Component component) {
// creates progress bar
Dimension preferredSize = progressBar.getPreferredSize();
preferredSize.width = PROGRESS_BAR_WIDTH;
progressBar.setPreferredSize(preferredSize);
UIManager.put("ProgressMonitor.progressText", title);
UIManager.put("OptionPane.cancelButtonText",
    PlasaApplication.getTranslator().getString(PlasaLanguageKey.GLOBAL_CANCEL));
progressMonitor = new ProgressMonitor(progressBar, "", "", 0, 100);
progressMonitor.setProgress(0);

if (task == null) {
    throw new IllegalArgumentException("swing worker is not set");
}

backingTask = new BackingTask(task);
task.addPropertyChangeListener(this);
backingTask.execute();
}

/**
 * Inner class Here begin the progress status
 * 
 */
private class BackingTask extends SwingWorker<Void, Void> {

SwingWorker<?, ?> worker; // backing worker

public BackingTask(SwingWorker<?, ?> worker) {

    this.worker = worker;

}

// run the task on background
@Override
protected Void doInBackground() throws Exception {

    worker.execute();
    return null;
};

/**
 * This function close the progress monitor when task is done or cancel
 */
@Override
public void done() {
    Toolkit.getDefaultToolkit().beep();
    progressMonitor.close();
}

}

}

Answer 1

因此，假设您要更改应用程序的图标（JFrame）并且您想在进度子类中执行此操作，请尝试以下方法：

public class YourFrame extends JFrame {
    public YourFrame() {
        ... new SwingWorkerProgressMonitor(this, ...);
    }
}

public class SwingWorkerProgressMonitor extends ... {
    private final JFrame frame;

    public SwingWorkerProgressMonitor(JFrame frame, ...) {
        this.frame = frame;
        ...
    }

    private void setIconInProgress() {
        this.frame.setIconImage(...);
    }
}

如何更改JProgressBar中的默认Java图标？

1 个答案: