J2ME视频播放实现的简单代码

在J2ME中有关视频播放的步骤：
1.加载视频资源;
2.创建Player;
3.将视频到"以实现"状态(player.realize());
4.vidc.initDisplayMode(参数1，参数2);由于参数2需要Canvas对象，所以编写的类需要继承Canvas类;
5.视频播放并显示.

package com.mopietek;

import javax.microedition.lcdui.Display;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class MediaPlayerApp extends MIDlet{

	public Display display;
	public static MediaPlayerApp midlet;
	public VideoCanvas videoCanvas;
	
	public MediaPlayerApp(){
	  	midlet = this;
	  	display = Display.getDisplay(this);
	  	videoCanvas = new VideoCanvas(display);
	  	videoCanvas.open("/up1.mpg");
	  	display.setCurrent(videoCanvas);
	}
	
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub
		
	}

	protected void pauseApp() {
		// TODO Auto-generated method stub
		
	}

	protected void startApp() throws MIDletStateChangeException {
		// TODO Auto-generated method stub
		
	}

}

package com.mopietek;

import java.io.InputStream;

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.Control;
import javax.microedition.media.Manager;
import javax.microedition.media.Player;
import javax.microedition.media.PlayerListener;
import javax.microedition.media.control.FramePositioningControl;
import javax.microedition.media.control.RateControl;
import javax.microedition.media.control.VideoControl;
import javax.microedition.media.control.VolumeControl;

public class VideoCanvas extends Canvas implements Runnable,CommandListener,PlayerListener{

	
	private Display videodisplay;
	private  int screenWidth;
	private  int screenHeight;
	
	public static Command exitCommand = new Command("退出",Command.EXIT,1);
	public static Command playCommand = new Command("播放",Command.OK,1);
	public static Command pauseCommand = new Command("暂停",Command.ITEM,10);
	
	private VolumeControl vc;
	private Player player;
	private VideoControl vidc;
	private RateControl rc;
	private FramePositioningControl fpc;
	
	public VideoCanvas(){
		
	}
	
	public VideoCanvas(Display display){
		 this.videodisplay = display;
		 screenWidth = this.getWidth();
		 screenHeight = this.getHeight();
	     initialize();
	}
	
	//添加命令
	public void initialize(){
		addCommand(exitCommand);
		addCommand(playCommand);
		addCommand(pauseCommand);
		setCommandListener(this);
	}
	
	protected void paint(Graphics g) {
		//可以编写视频的外框，进度条等
	}
	
	
	public void open(String url){
		try{
				if(player == null){
					InputStream is = getClass().getResourceAsStream(url);
					player = Manager.createPlayer(is,"video/mpeg");
					//可以添加player的监听，实现视频的暂停、快放、快退等功能
					player.addPlayerListener(this);
				}
				player.realize(); //player的“以实现”状态
				if((vidc = (VideoControl) player.getControl("VideoControl")) != null){
					vidc.initDisplayMode(VideoControl.USE_DIRECT_VIDEO,this);
					vidc.setDisplayFullScreen(true);
					vidc.setVisible(true);
				}
				
				Control [] controls = player.getControls();
				for(int i=0; i<controls.length;i++){
					if(controls[i] instanceof VolumeControl)
						vc = (VolumeControl) controls[i];
					if(controls[i] instanceof RateControl)
						rc = (RateControl) controls[i];
					if(controls[i] instanceof FramePositioningControl)
						fpc = (FramePositioningControl) controls[i];
				}
				
				player.prefetch(); //"预抓取"状态
				
			if(vidc == null) addCommand(pauseCommand);
			if(player == null){
				return;
			}else{
				player.start();  //开始播放视频
			}
			
		}catch(Exception e){System.err.println(e.toString());}
	}

	public void run() {
		// TODO Auto-generated method stub
		
	}

	public void commandAction(Command c, Displayable d) {
		// TODO Auto-generated method stub
		
	}

	public void playerUpdate(Player arg0, String arg1, Object arg2) {
		// TODO Auto-generated method stub
		
	}

}

注意：播放的视频不要过大，否则会报java.lang.outofMemaryError异常。 目前只是在模拟器上可以运行，在真机上还不能运行，待完善。欢迎大家一块探讨学习！

测试的视频在附件中