J2ME 本地视频播放器

import java.io.IOException; import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Graphics; import javax.microedition.media.Manager; import javax.microedition.media.MediaException; import javax.microedition.media.Player; import javax.microedition.media.PlayerListener; import javax.microedition.media.control.VideoControl; /** Acquires the video content and renders it */ public class VideoCanvas extends Canvas implements CommandListener, PlayerListener, Runnable { private Display display; private Player player; private VideoControl videoControl; private String url; private Thread initializer; private Command close; private Command rePlay; public VideoCanvas(){ super(); display = Display.getDisplay(PowerVideo.p); close = new Command("close", Command.SCREEN, 1); addCommand(close); setCommandListener(this); this.setFullScreenMode(true); } public void initializeVideo(String url){ this.url = url; initializer = new Thread(this); initializer.start(); this.setFullScreenMode(true); } public void run(){ try { player = Manager.createPlayer(url); player.addPlayerListener(this); player.realize(); player.prefetch(); this.setFullScreenMode(true); } catch (IOException ioe) { Alert alert = new Alert("IOException thrown", ioe.getMessage(), null, AlertType.ERROR); display.setCurrent(alert); } catch (MediaException me) { Alert alert = new Alert("MediaException thrown", me.getMessage(), null, AlertType.ERROR); display.setCurrent(alert); } playVideo(); } public void playVideo(){ try { // Get the video control and set it to the current display. videoControl = (VideoControl)player.getControl("VideoControl"); if (videoControl != null) { videoControl.initDisplayMode(videoControl.USE_DIRECT_VIDEO, this); } int cHeight = this.getHeight(); int cWidth = this.getWidth(); videoControl.setDisplaySize(cWidth, cHeight); display.setCurrent(this); videoControl.setVisible(true); player.start(); } catch (MediaException me) { Alert alert = new Alert("MediaException thrown", me.getMessage(), null, AlertType.ERROR); display.setCurrent(alert); } } /** Paints background color */ public void paint(Graphics g){ g.setColor(128, 128, 128); g.fillRect(0, 0, getWidth(), getHeight()); } public void playerUpdate(Player p, String event, Object eventData) { //add "Replay" option when video is finished if (event == PlayerListener.END_OF_MEDIA) { if (rePlay == null) { rePlay = new Command("re-play", Command.SCREEN, 1); addCommand(rePlay); } } } public void commandAction(Command c, Displayable s) { if(c == rePlay){ try{ player.start(); } catch (MediaException me) { Alert alert = new Alert("MediaException thrown", me.getMessage(), null, AlertType.ERROR); display.setCurrent(alert); } } else if(c == close){ player.close(); System.gc(); new FileController().showCurrentDir(); url=null; } } }