请查看以下代码
import com.sun.jna.Native;
import uk.co.caprica.vlcj.binding.LibVlc;
import uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent;
import uk.co.caprica.vlcj.runtime.RuntimeUtil;
import com.sun.jna.NativeLibrary;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.media.bean.playerbean.MediaPlayer;
import uk.co.caprica.vlcj.player.MediaPlayerEventAdapter;
import uk.co.caprica.vlcj.player.MediaPlayerEventListener;
public class PlayMedia extends JFrame
{
private EmbeddedMediaPlayerComponent m;
private JProgressBar bar;
public PlayMedia()
{
NativeLibrary.addSearchPath(
RuntimeUtil.getLibVlcLibraryName(), "c:\\program files\\videolan\\vlc"
);
Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(), LibVlc.class);
m = new EmbeddedMediaPlayerComponent();
m.getMediaPlayer().addMediaPlayerEventListener(new UpdateBar());
bar = new JProgressBar(0,100);
bar.setStringPainted(true);
getContentPane().add(m);
getContentPane().add(bar,"South");
this.setSize(500,500);
this.validate();
this.setLocationRelativeTo(null);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
m.getMediaPlayer().playMedia("C:\\Users\\Yohan\\Desktop\\video.avi");
}
private class UpdateBar extends MediaPlayerEventAdapter
{
public void positionChanged(MediaPlayer mp, float pos)
{
int value = Math.min(100, Math.round(pos * 100.0f));
bar.setValue(value);
}
}
public static void main(String[]args)
{
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
new PlayMedia();
}
});
}
}
在这里,视频播放正常,但进度条没有更新。如何在视频播放时更新进度条?请帮忙!
答案 0 :(得分:0)
我没有在Swing中使用ProgressBars,但我在Silverlight中使用过它们,所以我认为大多数原则都是一样的。在这里查看我的问题的答案: How do I make a Silverlight Progressbar update according to its value?它可能无法准确地向您展示如何在Swing中执行此操作,但似乎您在代码中使用了线程,这就是我的问题所在。
答案 1 :(得分:0)
由于某些未知原因,视频期间未调用positionChanged()。 尝试使用timeChanged()istead,它对我有用!
public void positionChanged (MediaPlayer mediaPlayer , long time) { ... }